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Intrinsic bond orbitals information


Intrinsic bond orbitals (IBO) are localized molecular orbitals giving exact and non-empirical representations of wave functions. They are obtained by unitary transformation and form an orthogonal set of orbitals localized on a minimal number of atoms. IBOs present an intuitive and unbiased interpretation of chemical bonding with naturally arising Lewis structures.[1] For this reason IBOs have been successfully employed for the elucidation of molecular structures[1] and electron flow along the intrinsic reaction coordinate (IRC).[2] IBOs have also found application as Wannier functions in the study of solids.[3]

  1. ^ a b Knizia, Gerald (2013-11-12). "Intrinsic Atomic Orbitals: An Unbiased Bridge between Quantum Theory and Chemical Concepts". Journal of Chemical Theory and Computation. 9 (11): 4834–4843. arXiv:1306.6884. doi:10.1021/ct400687b. ISSN 1549-9618. PMID 26583402. S2CID 17717923.
  2. ^ Cite error: The named reference :1 was invoked but never defined (see the help page).
  3. ^ Schäfer, Tobias; Gallo, Alejandro; Irmler, Andreas; Hummel, Felix; Grüneis, Andreas (28 December 2021). "Surface science using coupled cluster theory via local Wannier functions and in-RPA-embedding: The case of water on graphitic carbon nitride". The Journal of Chemical Physics. 155 (24). arXiv:2110.06035. doi:10.1063/5.0074936.

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Intrinsic bond orbitals

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Intrinsic bond orbitals (IBO) are localized molecular orbitals giving exact and non-empirical representations of wave functions. They are obtained by unitary...

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"natural atomic orbitals" (NAO), "natural hybrid orbitals" (NHO), "natural bonding orbitals" (NBO) and "natural (semi-)localized molecular orbitals" (NLMO)....

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Localized molecular orbitals are molecular orbitals which are concentrated in a limited spatial region of a molecule, such as a specific bond or lone pair on...

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surface, making for almost filled orbitals in arsenic and almost empty orbitals for gallium. Consequently, the dangling bond density at the surface is much...

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molecular orbitals (MO) obtained from quantum chemical calculations (DFT for instance), which often provide extensively delocalized orbitals that are hard...

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often weak due to poor orbital overlap between the n>2 orbitals of the two atoms. Although such compounds are not intrinsically unstable, they instead...

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isolated atom occupy atomic orbitals with discrete energy levels. If two atoms come close enough so that their atomic orbitals overlap, the electrons can...

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molecules donate their lone pairs into the aluminylenes empty orbitalsIntrinsic Bond Orbital calculations showed a significant degree of pi-backbonding...

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angular nodes present in an orbital. For example, for p orbitals, ℓ = 1 and thus the amount of angular nodes in a p orbital is 1. The magnetic quantum...

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degenerate P-N pi bonding orbitals. Likewise, the LUMOs of PN, which consist of a degenerate PN pi-antibonding set, allow it to backbond with orbitals of appropriate...

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valence bond theory, in each carbon atom the 2s orbital hybridizes with one 2p orbital thus forming an sp hybrid. The other two 2p orbitals remain unhybridized...

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molecular orbitals with exactly one electron in them. While paired electrons are required by the Pauli exclusion principle to have their intrinsic ('spin')...

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development of IBSI (Intrinsic Bond Strength Index), relying on the IGM (Independent Gradient Model) methodology. Ionic bonding Salt bridges Coomber's...

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Atom

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quantized) set of these orbitals exist around the nucleus, as other possible wave patterns rapidly decay into a more stable form. Orbitals can have one or more...

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the energy of the occupied molecular orbitals because the energy of the oxygen atom's nonbonding hybrid orbitals contributes completely to the energy...

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Silicon

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as valence orbitals: hence, it can complete its octet and obtain the stable noble gas configuration of argon by forming sp3 hybrid orbitals, forming tetrahedral...

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influence of several nuclei, and occupy molecular orbitals; much as they can occupy atomic orbitals in isolated atoms. A fundamental factor in these molecular...

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sigma bonding orbital. The pi-backbonding interactions illustrated below occur between the t2g d-orbital set and the CO π* antibonding orbitals. The degenerate...

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each other to a molecule wide delocalized set of orbitals. The electrons in these delocalized orbitals have high mobility when the material is "doped"...

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Pauling was therefore able to correlate the number of d-orbitals in bond formation with the bond length, as well as with many of the physical properties...

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