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Crystal field theory

Index Crystal field theory

Crystal Field Theory (CFT) is a model that describes the breaking of degeneracies of electron orbital states, usually d or f orbitals, due to a static electric field produced by a surrounding charge distribution (anion neighbors). [1]

48 relations: Acetonitrile, Ammonia, Atomic orbital, Aufbau principle, Azide, Bromide, Carbon monoxide, Charge-transfer complex, Chemical bond, Chemical bonding model, Chloride, Citizendium, Coordination complex, Cyanide, Degenerate energy levels, Enthalpy, Ethylenediamine, Fluoride, Hans Bethe, Heat capacity, Hund's rule of maximum multiplicity, Hydration reaction, Hydroxide, Iodide, Isothiocyanate, John Hasbrouck Van Vleck, Ligand, Ligand field theory, Magnetism, Molecular orbital theory, Molecular symmetry, Nitrate, Nitrite, Octahedral molecular geometry, Oxalate, Phenanthroline, Pi backbonding, Properties of water, Pyridine, Schottky anomaly, Spectrochemical series, Spinel, Square planar molecular geometry, Sulfide, Thiocyanate, Transition metal, Triphenylphosphine, 2,2'-Bipyridine.

Acetonitrile

Acetonitrile is the chemical compound with the formula.

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Ammonia

Ammonia is a compound of nitrogen and hydrogen with the formula NH3.

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Atomic orbital

In quantum mechanics, an atomic orbital is a mathematical function that describes the wave-like behavior of either one electron or a pair of electrons in an atom.

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Aufbau principle

The aufbau principle states that in the ground state of an atom or ion, electrons fill atomic orbitals of the lowest available energy levels before occupying higher levels.

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Azide

Azide is the anion with the formula N. It is the conjugate base of hydrazoic acid (HN3).

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Bromide

A bromide is a chemical compound containing a bromide ion or ligand.

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Carbon monoxide

Carbon monoxide (CO) is a colorless, odorless, and tasteless gas that is slightly less dense than air.

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Charge-transfer complex

A charge-transfer complex (CT complex) or electron-donor-acceptor complex is an association of two or more molecules, or of different parts of one large molecule, in which a fraction of electronic charge is transferred between the molecular entities.

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Chemical bond

A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds.

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Chemical bonding model

Chemical bonding models are theoretical models used to explain atomic bonding structure, molecular geometry, properties, and reactivity of physical matter.

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Chloride

The chloride ion is the anion (negatively charged ion) Cl−.

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Citizendium

Citizendium ("the citizens' compendium of everything") is an English-language wiki-based free encyclopedia project launched by Larry Sanger, who had previously co-founded Wikipedia in 2001.

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Coordination complex

In chemistry, a coordination complex consists 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.

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Cyanide

A cyanide is a chemical compound that contains the group C≡N.

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Degenerate energy levels

In quantum mechanics, an energy level is degenerate if it corresponds to two or more different measurable states of a quantum system.

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Enthalpy

Enthalpy is a property of a thermodynamic system.

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Ethylenediamine

Ethylenediamine (abbreviated as en when a ligand) is the organic compound with the formula C2H4(NH2)2.

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Fluoride

Fluoride.

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Hans Bethe

Hans Albrecht Bethe (July 2, 1906 – March 6, 2005) was a German-American nuclear physicist who made important contributions to astrophysics, quantum electrodynamics and solid-state physics, and won the 1967 Nobel Prize in Physics for his work on the theory of stellar nucleosynthesis.

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Heat capacity

Heat capacity or thermal capacity is a measurable physical quantity equal to the ratio of the heat added to (or removed from) an object to the resulting temperature change.

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Hund's rule of maximum multiplicity

Hund's rule of maximum multiplicity is a rule based on observation of atomic spectra, which is used to predict the ground state of an atom or molecule with one or more open electronic shells.

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Hydration reaction

In chemistry, a hydration reaction is a chemical reaction in which a substance combines with water.

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Hydroxide

Hydroxide is a diatomic anion with chemical formula OH−.

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Iodide

An iodide ion is the ion I−.

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Isothiocyanate

Isothiocyanate is the chemical group –N.

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John Hasbrouck Van Vleck

John Hasbrouck Van Vleck (March 13, 1899 – October 27, 1980) was an American physicist and mathematician, co-awarded the 1977 Nobel Prize in Physics, for his contributions to the understanding of the behavior of electrons in magnetic solids.

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Ligand

In coordination chemistry, a ligand is an ion or molecule (functional group) that binds to a central metal atom to form a coordination complex.

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Ligand field theory

Ligand field theory (LFT) describes the bonding, orbital arrangement, and other characteristics of coordination complexes.

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Magnetism

Magnetism is a class of physical phenomena that are mediated by magnetic fields.

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Molecular orbital theory

In chemistry, molecular orbital (MO) theory is a method for determining molecular structure in which electrons are not assigned to individual bonds between atoms, but are treated as moving under the influence of the nuclei in the whole molecule.

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Molecular symmetry

Molecular symmetry in chemistry describes the symmetry present in molecules and the classification of molecules according to their symmetry.

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Nitrate

Nitrate is a polyatomic ion with the molecular formula and a molecular mass of 62.0049 u.

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Nitrite

The nitrite ion, which has the chemical formula, is a symmetric anion with equal N–O bond lengths.

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Octahedral molecular geometry

In chemistry, octahedral molecular geometry 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.

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Oxalate

Oxalate (IUPAC: ethanedioate) is the dianion with the formula, also written.

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Phenanthroline

Phenanthroline (phen) is a heterocyclic organic compound.

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Pi backbonding

π backbonding, also called π backdonation, is a concept from chemistry in which electrons move from an atomic orbital on one atom to an appropriate symmetry antibonding orbital on a π-acceptor ligand.

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Properties of water

Water is a polar inorganic compound that is at room temperature a tasteless and odorless liquid, which is nearly colorless apart from an inherent hint of blue. It is by far the most studied chemical compound and is described as the "universal solvent" and the "solvent of life". It is the most abundant substance on Earth and the only common substance to exist as a solid, liquid, and gas on Earth's surface. It is also the third most abundant molecule in the universe. Water molecules form hydrogen bonds with each other and are strongly polar. This polarity allows it to separate ions in salts and strongly bond to other polar substances such as alcohols and acids, thus dissolving them. Its hydrogen bonding causes its many unique properties, such as having a solid form less dense than its liquid form, a relatively high boiling point of 100 °C for its molar mass, and a high heat capacity. Water is amphoteric, meaning that it is both an acid and a base—it produces + and - ions by self-ionization.

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Pyridine

Pyridine is a basic heterocyclic organic compound with the chemical formula C5H5N.

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Schottky anomaly

The Schottky anomaly is an effect observed in solid-state physics where the specific heat capacity of a solid at low temperature has a peak.

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Spectrochemical series

A spectrochemical series is a list of ligands ordered on ligand strength and a list of metal ions based on oxidation number, group and its identity.

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Spinel

Spinel is the magnesium aluminium member of the larger spinel group of minerals.

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Square planar molecular geometry

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

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Sulfide

Sulfide (systematically named sulfanediide, and sulfide(2−)) (British English sulphide) is an inorganic anion of sulfur with the chemical formula S2− or a compound containing one or more S2− ions.

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Thiocyanate

Thiocyanate (also known as rhodanide) is the anion −. It is the conjugate base of thiocyanic acid.

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Transition metal

In chemistry, the term transition metal (or transition element) has three possible meanings.

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Triphenylphosphine

Triphenylphosphine (IUPAC name: triphenylphosphane) is a common organophosphorus compound with the formula P(C6H5)3 - often abbreviated to PPh3 or Ph3P.

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2,2'-Bipyridine

2,2′-Bipyridine (bipy or bpy, pronounced) is an organic compound with the formula (C10H8N2).

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CF Theory, Cfse, Crystal Field Splitting Energy, Crystal Field Stabilization Energy, Crystal Field Theory, Crystal field, Crystal field splitting, Crystal field splitting energy, Crystal field stabilization energy, High Spin Complex, High spin complex, High-spin complex, Ligand Field Splitting.

References

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

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