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Isomer

Index Isomer

In chemistry, isomers are molecules or polyatomic ions with identical molecular formula – that is, the same number of atoms of each element – but distinct arrangements of atoms in space. [1]

Table of Contents

  1. 163 relations: Acetic acid, Activation energy, Alcohol (chemistry), Alkane, Allotropy, Amino acid, Ammonium cyanate, Amphetamine, Anti-inflammatory, Atom, Atropisomer, Back-formation, Benzene, Biochemistry, Biological activity, Biphenyl, Bond energy, Bromochlorofluoromethane, Bronchodilator, Butane, Caffeine, Cahn–Ingold–Prelog priority rules, Carbon peapod, Carboxylic acid, Catalysis, Catenane, ChemComm, Chemical bond, Chemical compound, Chemical element, Chemical formula, Chemical property, Chemistry, Chiral resolution, Chirality, Chirality (chemistry), Chlorine, Chlorofluoromethane, Chromatography, Cis–trans isomerism, Cisplatin, Conformational isomerism, Coordination complex, Cyanate, Cyclic compound, Cyclohexane, Cyclohexane conformation, Cyclopropene, Delocalized electron, Descriptor (chemistry), ... Expand index (113 more) »

  2. 1827 introductions
  3. Isomerism

Acetic acid

Acetic acid, systematically named ethanoic acid, is an acidic, colourless liquid and organic compound with the chemical formula (also written as,, or). Vinegar is at least 4% acetic acid by volume, making acetic acid the main component of vinegar apart from water.

See Isomer and Acetic acid

Activation energy

In the Arrhenius model of reaction rates, activation energy is the minimum amount of energy that must be available to reactants for a chemical reaction to occur.

See Isomer and Activation energy

Alcohol (chemistry)

In chemistry, an alcohol is a type of organic compound that carries at least one hydroxyl functional group bound to carbon.

See Isomer and Alcohol (chemistry)

Alkane

In organic chemistry, an alkane, or paraffin (a historical trivial name that also has other meanings), is an acyclic saturated hydrocarbon.

See Isomer and Alkane

Allotropy

Allotropy or allotropism is the property of some chemical elements to exist in two or more different forms, in the same physical state, known as allotropes of the elements.

See Isomer and Allotropy

Amino acid

Amino acids are organic compounds that contain both amino and carboxylic acid functional groups.

See Isomer and Amino acid

Ammonium cyanate

Ammonium cyanate is an inorganic compound with the formula.

See Isomer and Ammonium cyanate

Amphetamine

Amphetamine (contracted from alpha-methylphenethylamine) is a central nervous system (CNS) stimulant that is used in the treatment of attention deficit hyperactivity disorder (ADHD), narcolepsy, and obesity.

See Isomer and Amphetamine

Anti-inflammatory

Anti-inflammatory or antiphlogistic is the property of a substance or treatment that reduces inflammation or swelling.

See Isomer and Anti-inflammatory

Atom

Atoms are the basic particles of the chemical elements.

See Isomer and Atom

Atropisomer

Atropisomers are stereoisomers arising because of hindered rotation about a single bond, where energy differences due to steric strain or other contributors create a barrier to rotation that is high enough to allow for isolation of individual conformers.

See Isomer and Atropisomer

Back-formation

In etymology, back-formation is the process or result of creating a new word via inflection, typically by removing or substituting actual or supposed affixes from a lexical item, in a way that expands the number of lexemes associated with the corresponding root word.

See Isomer and Back-formation

Benzene

Benzene is an organic chemical compound with the molecular formula C6H6. The benzene molecule is composed of six carbon atoms joined in a planar hexagonal ring with one hydrogen atom attached to each. Because it contains only carbon and hydrogen atoms, benzene is classed as a hydrocarbon. Benzene is a natural constituent of petroleum and is one of the elementary petrochemicals.

See Isomer and Benzene

Biochemistry

Biochemistry or biological chemistry is the study of chemical processes within and relating to living organisms.

See Isomer and Biochemistry

Biological activity

In pharmacology, biological activity or pharmacological activity describes the beneficial or adverse effects of a drug on living matter.

See Isomer and Biological activity

Biphenyl

Biphenyl (also known as diphenyl, phenylbenzene, 1,1′-biphenyl, lemonene or BP) is an organic compound that forms colorless crystals.

See Isomer and Biphenyl

Bond energy

In chemistry, bond energy (BE) is one measure of the strength of a chemical bond.

See Isomer and Bond energy

Bromochlorofluoromethane

Bromochlorofluoromethane or fluorochlorobromomethane, is a chemical compound and trihalomethane derivative with the chemical formula CHBrClF.

See Isomer and Bromochlorofluoromethane

Bronchodilator

A bronchodilator or broncholytic (although the latter occasionally includes secretory inhibition as well) is a substance that dilates the bronchi and bronchioles, decreasing resistance in the respiratory airway and increasing airflow to the lungs.

See Isomer and Bronchodilator

Butane

Butane or n-butane is an alkane with the formula C4H10.

See Isomer and Butane

Caffeine

Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class.

See Isomer and Caffeine

Cahn–Ingold–Prelog priority rules

In organic chemistry, the Cahn–Ingold–Prelog (CIP) sequence rules (also the CIP priority convention; named after Robert Sidney Cahn, Christopher Kelk Ingold, and Vladimir Prelog) are a standard process to completely and unequivocally name a stereoisomer of a molecule.

See Isomer and Cahn–Ingold–Prelog priority rules

Carbon peapod

Carbon peapod is a hybrid nanomaterial consisting of spheroidal fullerenes encapsulated within a carbon nanotube.

See Isomer and Carbon peapod

Carboxylic acid

In organic chemistry, a carboxylic acid is an organic acid that contains a carboxyl group attached to an R-group.

See Isomer and Carboxylic acid

Catalysis

Catalysis is the increase in rate of a chemical reaction due to an added substance known as a catalyst.

See Isomer and Catalysis

Catenane

In macromolecular chemistry, a catenane is a mechanically interlocked molecular architecture consisting of two or more interlocked macrocycles, i.e. a molecule containing two or more intertwined rings.

See Isomer and Catenane

ChemComm

ChemComm (or Chemical Communications), formerly known as Journal of the Chemical Society D: Chemical Communications (1969–1971), Journal of the Chemical Society, Chemical Communications (1972–1995), is a peer-reviewed scientific journal published by the Royal Society of Chemistry.

See Isomer and ChemComm

Chemical bond

A chemical bond is the association of atoms or ions to form molecules, crystals, and other structures.

See Isomer and Chemical bond

Chemical compound

A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) containing atoms from more than one chemical element held together by chemical bonds.

See Isomer and Chemical compound

Chemical element

A chemical element is a chemical substance that cannot be broken down into other substances by chemical reactions.

See Isomer and Chemical element

Chemical formula

A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.

See Isomer and Chemical formula

Chemical property

A chemical property is any of a material's properties that becomes evident during, or after, a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.

See Isomer and Chemical property

Chemistry

Chemistry is the scientific study of the properties and behavior of matter.

See Isomer and Chemistry

Chiral resolution

Chiral resolution, or enantiomeric resolution, is a process in stereochemistry for the separation of racemic mixture into their enantiomers.

See Isomer and Chiral resolution

Chirality

Chirality is a property of asymmetry important in several branches of science.

See Isomer and Chirality

Chirality (chemistry)

In chemistry, a molecule or ion is called chiral if it cannot be superposed on its mirror image by any combination of rotations, translations, and some conformational changes.

See Isomer and Chirality (chemistry)

Chlorine

Chlorine is a chemical element; it has symbol Cl and atomic number 17.

See Isomer and Chlorine

Chlorofluoromethane

Chlorofluoromethane or Freon 31 is the hydrochlorofluorocarbon (HCFC) with the formula CH2ClF.

See Isomer and Chlorofluoromethane

Chromatography

In chemical analysis, chromatography is a laboratory technique for the separation of a mixture into its components.

See Isomer and Chromatography

Cis–trans isomerism

Cis–trans isomerism, also known as geometric isomerism, describes certain arrangements of atoms within molecules. Isomer and Cis–trans isomerism are isomerism.

See Isomer and Cis–trans isomerism

Cisplatin

Cisplatin is a chemical compound with formula cis-.

See Isomer and Cisplatin

Conformational isomerism

In chemistry, conformational isomerism is a form of stereoisomerism in which the isomers can be interconverted just by rotations about formally single bonds (refer to figure on single bond rotation). Isomer and conformational isomerism are isomerism.

See Isomer and Conformational isomerism

Coordination complex

A coordination complex is a chemical compound consisting of a central atom or ion, which is usually metallic and is called the coordination centre, and a surrounding array of bound molecules or ions, that are in turn known as ligands or complexing agents.

See Isomer and Coordination complex

Cyanate

The cyanate ion is an anion with the chemical formula.

See Isomer and Cyanate

Cyclic compound

A cyclic compound (or ring compound) is a term for a compound in the field of chemistry in which one or more series of atoms in the compound is connected to form a ring.

See Isomer and Cyclic compound

Cyclohexane

Cyclohexane is a cycloalkane with the molecular formula.

See Isomer and Cyclohexane

Cyclohexane conformation

Cyclohexane conformations are any of several three-dimensional shapes adopted by molecules of cyclohexane.

See Isomer and Cyclohexane conformation

Cyclopropene

Cyclopropene is an organic compound with the formula.

See Isomer and Cyclopropene

Delocalized electron

In chemistry, delocalized electrons are electrons in a molecule, ion or solid metal that are not associated with a single atom or a covalent bond.

See Isomer and Delocalized electron

Descriptor (chemistry)

In chemical nomenclature, a descriptor is a notational prefix placed before the systematic substance name, which describes the configuration or the stereochemistry of the molecule.

See Isomer and Descriptor (chemistry)

Deuterium

Deuterium (hydrogen-2, symbol H or D, also known as heavy hydrogen) is one of two stable isotopes of hydrogen (the other is protium, or hydrogen-1).

See Isomer and Deuterium

Diastereomer

In stereochemistry, diastereomers (sometimes called diastereoisomers) are a type of stereoisomer. Isomer and diastereomer are isomerism.

See Isomer and Diastereomer

Dimerization (chemistry)

In chemistry, dimerization is the process of joining two identical or similar molecular entities by bonds.

See Isomer and Dimerization (chemistry)

DNA

Deoxyribonucleic acid (DNA) is a polymer composed of two polynucleotide chains that coil around each other to form a double helix.

See Isomer and DNA

Dodecahedrane

Dodecahedrane is a chemical compound, a hydrocarbon with formula, whose carbon atoms are arranged as the vertices (corners) of a regular dodecahedron.

See Isomer and Dodecahedrane

Double bond

In chemistry, a double bond is a covalent bond between two atoms involving four bonding electrons as opposed to two in a single bond.

See Isomer and Double bond

Electromerism

Electromerism is a type of isomerism between a pair of molecules (electromers, electro-isomers) differing in the way electrons are distributed among the atoms and the connecting chemical bonds. Isomer and Electromerism are isomerism.

See Isomer and Electromerism

Enantiomer

In chemistry, an enantiomer (/ɪˈnænti.əmər, ɛ-, -oʊ-/ ''ih-NAN-tee-ə-mər''; from Ancient Greek ἐναντίος (enantíos) 'opposite', and μέρος (méros) 'part') – also called optical isomer, antipode, or optical antipode – is one of two stereoisomers that are nonsuperposable onto their own mirror image. Isomer and enantiomer are isomerism.

See Isomer and Enantiomer

Enantioselective synthesis

Enantioselective synthesis, also called asymmetric synthesis, is a form of chemical synthesis.

See Isomer and Enantioselective synthesis

Energy

Energy is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light.

See Isomer and Energy

Enol

In organic chemistry, alkenols (shortened to enols) are a type of reactive structure or intermediate in organic chemistry that is represented as an alkene (olefin) with a hydroxyl group attached to one end of the alkene double bond.

See Isomer and Enol

Enzyme

Enzymes are proteins that act as biological catalysts by accelerating chemical reactions.

See Isomer and Enzyme

Ernest L. Eliel

Ernest Ludwig Eliel (December 28, 1921 – September 18, 2008) was an organic chemist born in Cologne, Germany.

See Isomer and Ernest L. Eliel

Ethane

Ethane is a naturally occurring organic chemical compound with chemical formula.

See Isomer and Ethane

Ether

In organic chemistry, ethers are a class of compounds that contain an ether group—an oxygen atom bonded to two organyl groups (e.g., alkyl or aryl).

See Isomer and Ether

Food science

Food science is the basic science and applied science of food; its scope starts at overlap with agricultural science and nutritional science and leads through the scientific aspects of food safety and food processing, informing the development of food technology.

See Isomer and Food science

Friedrich Wöhler

Friedrich Wöhler FRS(For) HonFRSE (31 July 180023 September 1882) was a German chemist known for his work in both organic and inorganic chemistry, being the first to isolate the chemical elements beryllium and yttrium in pure metallic form.

See Isomer and Friedrich Wöhler

Fulminate

Fulminates are chemical compounds which include the fulminate ion.

See Isomer and Fulminate

Fumaric acid

Fumaric acid is an organic compound with the formula HO2CCH.

See Isomer and Fumaric acid

Functional group

In organic chemistry, a functional group is a substituent or moiety in a molecule that causes the molecule's characteristic chemical reactions.

See Isomer and Functional group

German language

German (Standard High German: Deutsch) is a West Germanic language in the Indo-European language family, mainly spoken in Western and Central Europe. It is the most widely spoken and official or co-official language in Germany, Austria, Switzerland, Liechtenstein, and the Italian province of South Tyrol.

See Isomer and German language

Glucose

Glucose is a sugar with the molecular formula.

See Isomer and Glucose

Greek language

Greek (Elliniká,; Hellēnikḗ) is an independent branch of the Indo-European family of languages, native to Greece, Cyprus, Italy (in Calabria and Salento), southern Albania, and other regions of the Balkans, the Black Sea coast, Asia Minor, and the Eastern Mediterranean.

See Isomer and Greek language

Halogen

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See Isomer and Halogen

Helium

Helium (from lit) is a chemical element; it has symbol He and atomic number 2.

See Isomer and Helium

Hierarchy

A hierarchy (from Greek:, from, 'president of sacred rites') is an arrangement of items (objects, names, values, categories, etc.) that are represented as being "above", "below", or "at the same level as" one another.

See Isomer and Hierarchy

Hydrocarbon

In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon.

See Isomer and Hydrocarbon

Hydrogen

Hydrogen is a chemical element; it has symbol H and atomic number 1.

See Isomer and Hydrogen

Hydrogen bond

In chemistry, a hydrogen bond (or H-bond) is primarily an electrostatic force of attraction between a hydrogen (H) atom which is covalently bonded to a more electronegative "donor" atom or group (Dn), and another electronegative atom bearing a lone pair of electrons—the hydrogen bond acceptor (Ac).

See Isomer and Hydrogen bond

Hydrogen peroxide

Hydrogen peroxide is a chemical compound with the formula.

See Isomer and Hydrogen peroxide

Hydroxy group

In chemistry, a hydroxy or hydroxyl group is a functional group with the chemical formula and composed of one oxygen atom covalently bonded to one hydrogen atom.

See Isomer and Hydroxy group

Inclusion compound

In host–guest chemistry, an inclusion compound (also known as an inclusion complex) is a chemical complex in which one chemical compound (the "host") has a cavity into which a "guest" compound can be accommodated.

See Isomer and Inclusion compound

Inositol

In biochemistry, medicine, and related sciences, inositol generally refers to myo-inositol (formerly meso-inositol), the most important stereoisomer of the chemical compound cyclohexane-1,2,3,4,5,6-hexol.

See Isomer and Inositol

International Union of Pure and Applied Chemistry

The International Union of Pure and Applied Chemistry (IUPAC) is an international federation of National Adhering Organizations working for the advancement of the chemical sciences, especially by developing nomenclature and terminology.

See Isomer and International Union of Pure and Applied Chemistry

Intramolecular reaction

In chemistry, intramolecular describes a process or characteristic limited within the structure of a single molecule, a property or phenomenon limited to the extent of a single molecule.

See Isomer and Intramolecular reaction

Isopropyl alcohol

Isopropyl alcohol (IUPAC name propan-2-ol and also called isopropanol or 2-propanol) is a colorless, flammable organic compound with a pungent alcoholic odor.

See Isomer and Isopropyl alcohol

Isotopologue

In chemistry, isotopologues are molecules that differ only in their isotopic composition.

See Isomer and Isotopologue

Isotopomer

Isotopomers or isotopic isomers are isomers which differ by isotopic substitution, and which have the same number of atoms of each isotope but in a different arrangement. Isomer and Isotopomer are isomerism.

See Isomer and Isotopomer

Jöns Jacob Berzelius

Baron Jöns Jacob Berzelius ((20 August 1779 – 7 August 1848) was a Swedish chemist. In general, he is considered the last person to know the whole field of chemistry. Berzelius is considered, along with Robert Boyle, John Dalton, and Antoine Lavoisier, to be one of the founders of modern chemistry.

See Isomer and Jöns Jacob Berzelius

Joule

The joule (pronounced, or; symbol: J) is the unit of energy in the International System of Units (SI).

See Isomer and Joule

Journal of Chemical Education

The Journal of Chemical Education is a monthly peer-reviewed academic journal available in both print and electronic versions.

See Isomer and Journal of Chemical Education

Justus von Liebig

Justus Freiherr (Baron) von Liebig (12 May 1803 – 20 April 1873) was a German scientist who made major contributions to the theory, practice, and pedagogy of chemistry, as well as to agricultural and biological chemistry; he is considered one of the principal founders of organic chemistry.

See Isomer and Justus von Liebig

Knot theory

In topology, knot theory is the study of mathematical knots.

See Isomer and Knot theory

Ligand isomerism

In coordination chemistry, ligand isomerism is a type of structural isomerism in coordination complexes which arises from the presence of ligands which can adopt different isomeric forms.

See Isomer and Ligand isomerism

Linkage isomerism

In chemistry, linkage isomerism or ambidentate isomerism is a form of isomerism in which certain coordination compounds have the same composition but differ in their metal atom's connectivity to a ligand. Isomer and linkage isomerism are isomerism.

See Isomer and Linkage isomerism

Louis Pasteur

Louis Pasteur (27 December 1822 – 28 September 1895) was a French chemist, pharmacist, and microbiologist renowned for his discoveries of the principles of vaccination, microbial fermentation, and pasteurization, the last of which was named after him.

See Isomer and Louis Pasteur

Maleic acid

Maleic acid or cis-butenedioic acid is an organic compound that is a dicarboxylic acid, a molecule with two carboxyl groups.

See Isomer and Maleic acid

Maximum and minimum

In mathematical analysis, the maximum and minimum of a function are, respectively, the largest and smallest value taken by the function.

See Isomer and Maximum and minimum

Medicinal chemistry

Medicinal or pharmaceutical chemistry is a scientific discipline at the intersection of chemistry and pharmacy involved with designing and developing pharmaceutical drugs.

See Isomer and Medicinal chemistry

Merosity

Merosity (from the greek "méros," which means "having parts") refers to the number of component parts in a distinct whorl of a plant structure.

See Isomer and Merosity

Methamphetamine

Methamphetamine (contracted from) is a potent central nervous system (CNS) stimulant that is mainly used as a recreational drug and less commonly as a second-line treatment for attention deficit hyperactivity disorder and obesity.

See Isomer and Methamphetamine

Methoxyethane

Methoxyethane, also known as ethyl methyl ether, is a colorless gaseous ether with the formula.

See Isomer and Methoxyethane

Methyl group

In organic chemistry, a methyl group is an alkyl derived from methane, containing one carbon atom bonded to three hydrogen atoms, having chemical formula (whereas normal methane has the formula). In formulas, the group is often abbreviated as Me.

See Isomer and Methyl group

Microwave spectroscopy

Microwave spectroscopy is the spectroscopy method that employs microwaves, i.e. electromagnetic radiation at GHz frequencies, for the study of matter.

See Isomer and Microwave spectroscopy

Molecular vibration

A molecular vibration is a periodic motion of the atoms of a molecule relative to each other, such that the center of mass of the molecule remains unchanged.

See Isomer and Molecular vibration

Molecule

A molecule is a group of two or more atoms held together by attractive forces known as chemical bonds; depending on context, the term may or may not include ions which satisfy this criterion.

See Isomer and Molecule

Nuclear isomer

A nuclear isomer is a metastable state of an atomic nucleus, in which one or more nucleons (protons or neutrons) occupy excited state (higher energy) levels.

See Isomer and Nuclear isomer

O-Xylene

o-Xylene (ortho-xylene) is an aromatic hydrocarbon with the formula C6H4(CH3)2, with two methyl substituents bonded to adjacent carbon atoms of a benzene ring (the ortho configuration).

See Isomer and O-Xylene

Octahedral molecular geometry

In chemistry, octahedral molecular geometry, also called square bipyramidal, describes the shape of compounds with six atoms or groups of atoms or ligands symmetrically arranged around a central atom, defining the vertices of an octahedron.

See Isomer and Octahedral molecular geometry

Organometallic chemistry

Organometallic chemistry is the study of organometallic compounds, chemical compounds containing at least one chemical bond between a carbon atom of an organic molecule and a metal, including alkali, alkaline earth, and transition metals, and sometimes broadened to include metalloids like boron, silicon, and selenium, as well.

See Isomer and Organometallic chemistry

Oxygen

Oxygen is a chemical element; it has symbol O and atomic number 8.

See Isomer and Oxygen

Pentadiene

In organic chemistry, pentadiene is any hydrocarbon with an open chain of five carbons, connected by two single bonds and two double bonds.

See Isomer and Pentadiene

Phenethylamine

Phenethylamine (PEA) is an organic compound, natural monoamine alkaloid, and trace amine, which acts as a central nervous system stimulant in humans.

See Isomer and Phenethylamine

Phentermine

Phentermine (phenyl-tertiary-butyl amine), sold under the brand name Ionamin among others, is a medication used together with diet and exercise to treat obesity.

See Isomer and Phentermine

Phenyl group

In organic chemistry, the phenyl group, or phenyl ring, is a cyclic group of atoms with the formula, and is often represented by the symbol Ph (archaically φ).

See Isomer and Phenyl group

Phosphorus

Phosphorus is a chemical element; it has symbol P and atomic number 15.

See Isomer and Phosphorus

Physical property

A physical property is any property of a physical system that is measurable.

See Isomer and Physical property

Picosecond

A picosecond (abbreviated as ps) is a unit of time in the International System of Units (SI) equal to 10−12 or (one trillionth) of a second.

See Isomer and Picosecond

Plasmid

A plasmid is a small, extrachromosomal DNA molecule within a cell that is physically separated from chromosomal DNA and can replicate independently.

See Isomer and Plasmid

Polarization (waves)

italics (also italics) is a property of transverse waves which specifies the geometrical orientation of the oscillations.

See Isomer and Polarization (waves)

Polyatomic ion

A polyatomic ion (also known as a molecular ion) is a covalent bonded set of two or more atoms, or of a metal complex, that can be considered to behave as a single unit and that has a net charge that is not zero.

See Isomer and Polyatomic ion

Propadiene

Propadiene or allene is the organic compound with the formula.

See Isomer and Propadiene

Propane

Propane is a three-carbon alkane with the molecular formula.

See Isomer and Propane

Propanol

There are two isomers of propanol.

See Isomer and Propanol

Propyne

Propyne (methylacetylene) is an alkyne with the chemical formula.

See Isomer and Propyne

Quantum tunnelling

In physics, quantum tunnelling, barrier penetration, or simply tunnelling is a quantum mechanical phenomenon in which an object such as an electron or atom passes through a potential energy barrier that, according to classical mechanics, should not be passable due to the object not having sufficient energy to pass or surmount the barrier.

See Isomer and Quantum tunnelling

Rearrangement reaction

In organic chemistry, a rearrangement reaction is a broad class of organic reactions where the carbon skeleton of a molecule is rearranged to give a structural isomer of the original molecule.

See Isomer and Rearrangement reaction

Resonance (chemistry)

In chemistry, resonance, also called mesomerism, is a way of describing bonding in certain molecules or polyatomic ions by the combination of several contributing structures (or forms, also variously known as resonance structures or canonical structures) into a resonance hybrid (or hybrid structure) in valence bond theory.

See Isomer and Resonance (chemistry)

Right-hand rule

In mathematics and physics, the right-hand rule is a convention and a mnemonic, utilized to define the orientation of axes in three-dimensional space and to determine the direction of the cross product of two vectors, as well as to establish the direction of the force on a current-carrying conductor in a magnetic field.

See Isomer and Right-hand rule

RNA

Ribonucleic acid (RNA) is a polymeric molecule that is essential for most biological functions, either by performing the function itself (non-coding RNA) or by forming a template for the production of proteins (messenger RNA).

See Isomer and RNA

Rotation (mathematics)

Rotation in mathematics is a concept originating in geometry.

See Isomer and Rotation (mathematics)

Silver cyanate

Silver cyanate is the cyanate salt of silver.

See Isomer and Silver cyanate

Silver fulminate

Silver fulminate (AgCNO) is the highly explosive silver salt of fulminic acid.

See Isomer and Silver fulminate

Spin isomers of hydrogen

Molecular hydrogen occurs in two isomeric forms, one with its two proton nuclear spins aligned parallel (orthohydrogen), the other with its two proton spins aligned antiparallel (parahydrogen).

See Isomer and Spin isomers of hydrogen

Spin quantum number

In physics and chemistry, the spin quantum number is a quantum number (designated) that describes the intrinsic angular momentum (or spin angular momentum, or simply ''spin'') of an electron or other particle.

See Isomer and Spin quantum number

Square planar molecular geometry

In chemistry, the square planar molecular geometry describes the stereochemistry (spatial arrangement of atoms) that is adopted by certain chemical compounds.

See Isomer and Square planar molecular geometry

Stereocenter

In stereochemistry, a stereocenter of a molecule is an atom (center), axis or plane that is the focus of stereoisomerism; that is, when having at least three different groups bound to the stereocenter, interchanging any two different groups creates a new stereoisomer.

See Isomer and Stereocenter

Stereoisomerism

In stereochemistry, stereoisomerism, or spatial isomerism, is a form of isomerism in which molecules have the same molecular formula and sequence of bonded atoms (constitution), but differ in the three-dimensional orientations of their atoms in space. Isomer and stereoisomerism are isomerism.

See Isomer and Stereoisomerism

Steric effects

Steric effects arise from the spatial arrangement of atoms.

See Isomer and Steric effects

Structural isomer

In chemistry, a structural isomer (or constitutional isomer in the IUPAC nomenclature) of a compound is another compound whose molecule has the same number of atoms of each element, but with logically distinct bonds between them. Isomer and structural isomer are isomerism.

See Isomer and Structural isomer

Swedish language

Swedish (svenska) is a North Germanic language from the Indo-European language family, spoken predominantly in Sweden and in parts of Finland.

See Isomer and Swedish language

Tartaric acid

Tartaric acid is a white, crystalline organic acid that occurs naturally in many fruits, most notably in grapes but also in tamarinds, bananas, avocados, and citrus.

See Isomer and Tartaric acid

Tautomer

Tautomers are structural isomers (constitutional isomers) of chemical compounds that readily interconvert. Isomer and Tautomer are isomerism.

See Isomer and Tautomer

Theobromine

Theobromine, also known as xantheose, is the principal alkaloid of Theobroma cacao (cacao plant). Theobromine is slightly water-soluble (330 mg/L) with a bitter taste. In industry, theobromine is used as an additive and precursor to some cosmetics. It is found in chocolate, as well as in a number of other foods, including tea (Camellia sinensis), some American hollies (yaupon and guayusa) and the kola nut.

See Isomer and Theobromine

Theophylline

Theophylline, also known as 1,3-dimethylxanthine, is a drug that inhibits phosphodiesterase and blocks adenosine receptors.

See Isomer and Theophylline

Thermal energy

The term "thermal energy" is used loosely in various contexts in physics and engineering, generally related to the kinetic energy of vibrating and colliding atoms in a substance.

See Isomer and Thermal energy

Topoisomer

Topoisomers or topological isomers are molecules with the same chemical formula and stereochemical bond connectivities but different topologies.

See Isomer and Topoisomer

Topoisomerase

DNA topoisomerases (or topoisomerases) are enzymes that catalyze changes in the topological state of DNA, interconverting relaxed and supercoiled forms, linked (catenated) and unlinked species, and knotted and unknotted DNA.

See Isomer and Topoisomerase

Topology

Topology (from the Greek words, and) is the branch of mathematics concerned with the properties of a geometric object that are preserved under continuous deformations, such as stretching, twisting, crumpling, and bending; that is, without closing holes, opening holes, tearing, gluing, or passing through itself.

See Isomer and Topology

Trans-Cyclooctene

trans-Cyclooctene is a cyclic hydrocarbon with the formula, where the two C–C single bonds adjacent to the double bond are on opposite sides of the latter's plane.

See Isomer and Trans-Cyclooctene

Transition metal

In chemistry, a transition metal (or transition element) is a chemical element in the d-block of the periodic table (groups 3 to 12), though the elements of group 12 (and less often group 3) are sometimes excluded.

See Isomer and Transition metal

Translation (geometry)

In Euclidean geometry, a translation is a geometric transformation that moves every point of a figure, shape or space by the same distance in a given direction.

See Isomer and Translation (geometry)

Transplatin

trans-Dichlorodiammineplatinum(II) is the trans isomer of the coordination complex with the formula trans-PtCl2(NH3)2, sometimes called transplatin.

See Isomer and Transplatin

Trigonal bipyramidal molecular geometry

In chemistry, a trigonal bipyramid formation is a molecular geometry with one atom at the center and 5 more atoms at the corners of a triangular bipyramid.

See Isomer and Trigonal bipyramidal molecular geometry

Triple bond

A triple bond in chemistry is a chemical bond between two atoms involving six bonding electrons instead of the usual two in a covalent single bond.

See Isomer and Triple bond

Urea

Urea, also called carbamide (because it is a diamide of carbonic acid), is an organic compound with chemical formula.

See Isomer and Urea

Valence (chemistry)

In chemistry, the valence (US spelling) or valency (British spelling) of an atom is a measure of its combining capacity with other atoms when it forms chemical compounds or molecules.

See Isomer and Valence (chemistry)

Vasodilation

Vasodilation, also known as vasorelaxation, is the widening of blood vessels.

See Isomer and Vasodilation

Vitamer

Vitamins occur in a variety of related forms known as vitamers.

See Isomer and Vitamer

Xanthine

Xanthine (or, from Ancient Greek due to its yellowish-white appearance; archaically xanthic acid; systematic name 3,7-dihydropurine-2,6-dione) is a purine base found in most human body tissues and fluids, as well as in other organisms.

See Isomer and Xanthine

Zwitterion

In chemistry, a zwitterion, also called an inner salt or dipolar ion, is a molecule that contains an equal number of positively and negatively charged functional groups.

See Isomer and Zwitterion

1,2-Dichloroethane

The chemical compound 1,2-dichloroethane, commonly known as ethylene dichloride (EDC), is a chlorinated hydrocarbon.

See Isomer and 1,2-Dichloroethane

1-Propanol

1-Propanol (also propan-1-ol, propanol, n-propyl alcohol) is a primary alcohol with the formula and sometimes represented as PrOH or n-PrOH.

See Isomer and 1-Propanol

See also

1827 introductions

Isomerism

References

[1] https://en.wikipedia.org/wiki/Isomer

Also known as Chemical isomer, Isomeric, Isomerism, Isomerized, Isomerizing, Isomers, Molecular isomerism.

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