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Pi backbonding

Index 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. [1]

29 relations: Antibonding molecular orbital, Atomic orbital, Carbon monoxide, Chemical Reviews, Chemistry, Cis effect, Coordination complex, Dewar–Chatt–Duncanson model, Electric charge, Electron, Ethylene, Hexafluoro-2-butyne, Infrared spectroscopy, International Union of Pure and Applied Chemistry, Ligand, Ligand field theory, Metal carbonyl, Metal nitrosyl complex, Molecular orbital, Nickel tetracarbonyl, Nitrosonium, Organometallic chemistry, Organometallics, Synergy, Tetracyanoethylene, Tetrafluoroethylene, Transition metal, Zeise's salt, 18-electron rule.

Antibonding molecular orbital

In chemical bonding theory, an antibonding orbital is a type of molecular orbital (MO) that weakens the bond between two atoms and helps to raise the energy of the molecule relative to the separated atoms.

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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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Carbon monoxide

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

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Chemical Reviews

Chemical Reviews is peer-reviewed scientific journal published twice per month by the American Chemical Society.

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Chemistry is the scientific discipline involved with compounds composed of atoms, i.e. elements, and molecules, i.e. combinations of atoms: their composition, structure, properties, behavior and the changes they undergo during a reaction with other compounds.

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Cis effect

In inorganic chemistry, the cis effect is defined as the labilization (making unstable) of CO ligands that are ''cis'' to other ligands.

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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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Dewar–Chatt–Duncanson model

The Dewar–Chatt–Duncanson model is a model in organometallic chemistry that explains the type of chemical bonding between an alkene and a metal (pi-complex) in certain organometallic compounds.

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Electric charge

Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.

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The electron is a subatomic particle, symbol or, whose electric charge is negative one elementary charge.

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Ethylene (IUPAC name: ethene) is a hydrocarbon which has the formula or H2C.

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Hexafluoro-2-butyne is the fluorocarbon with the formula CF3C≡CCF3.

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Infrared spectroscopy

Infrared spectroscopy (IR spectroscopy or vibrational spectroscopy) involves the interaction of infrared radiation with matter.

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International Union of Pure and Applied Chemistry

The International Union of Pure and Applied Chemistry (IUPAC) is an international federation of National Adhering Organizations that represents chemists in individual countries.

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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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Metal carbonyl

Metal carbonyls are coordination complexes of transition metals with carbon monoxide ligands.

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Metal nitrosyl complex

Sodium nitroprusside, a medicinally significant metal nitrosyl compound. Metal nitrosyl complexes are complexes that contain nitric oxide, NO, bonded to a transition metal.

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Molecular orbital

In chemistry, a molecular orbital (MO) is a mathematical function describing the wave-like behavior of an electron in a molecule.

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Nickel tetracarbonyl

Nickel carbonyl (IUPAC name: tetracarbonylnickel) is the organonickel compound with the formula Ni(CO)4.

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The nitrosonium ion is NO+, in which the nitrogen atom is bonded to an oxygen atom with a bond order of 3, and the overall diatomic species bears a positive charge.

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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 alkaline, alkaline earth, and transition metals, and sometimes broadened to include metalloids like boron, silicon, and tin, as well.

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Organometallics is a biweekly journal published by the American Chemical Society.

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Synergy is the creation of a whole that is greater than the simple sum of its parts.

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Tetracyanoethylene (TCNE) is a clear colored organic compound consisting of ethylene with the four hydrogen atoms replaced with cyano groups.

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Tetrafluoroethylene (TFE) is a fluoromonomer with chemical formula C2F4.

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Transition metal

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

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Zeise's salt

Zeise's salt, potassium trichloro(ethene)platinate(II), is the chemical compound with the formula K·H2O.

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18-electron rule

The 18-electron rule is a rule used primarily for predicting and rationalizing formulae for stable metal complexes, especially organometallic compounds.

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Redirects here:

Back bonding, Back-bonding, Back-donation, P backbonding, Pi Acids, Pi acceptor, Pi acid, Pi acidity, Pi-acceptor ligand, Pi-acid, Π backbonding, Π-backbonding.


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

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