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Molecular Orbital Studies of Hydrogen Bonds. III. C=O···H–O Hydrogen Bond in H2CO···H2O and H2CO···2H2O

Morokuma, Keiji·1971·The Journal of Chemical Physics

Abstract

Ab initio LCAO–MO–SCF calculation for H2CO···H2O is carried out with a minimal Slater basis set. The most stable conformation has an O···H distance of 1.89 Å with <C=O···H=− 64° and a stabilization energy of 3.5 kcal/mole, about a half of that for H2O···H2O. Nonlinear and π hydrogen bonds, H2CO···2H2O and the O···H–C hydrogen bond in H2O···HCHO, are also studied. An energy decomposition scheme is proposed and applied to H2CO···H2O and H2O···H2O. In the latter the electrostatic energy 8.0 kcal/mole, the exchange repulsion − 9.9 kcal/mole, the polarization and dispersion energy 0.3 kcal/mole, and the delocalization energy 8.2 kcal/mole are in good agreement with Coulson's estimates.

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Metadata

Authors
Morokuma, K.
Venue
The Journal of Chemical Physics
Published
1971-08-01
Volume
55
Issue
3
Pages
1236-1244
ISSN
  • 0021-9606 (ISSN-L)
  • 1089-7690
OpenAlex
W1970900112
Cited by
1,900
References
0
FWCI
9.49
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Molecular Orbital Studies of Hydrogen Bonds. III. C=O···H–O Hydrogen Bond in H2CO···H2O and H2CO···2H2O. https://app.cochat.ai/papers/10.1063/1.1676210
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Morokuma, K. (1971). Molecular Orbital Studies of Hydrogen Bonds. III. C=O···H–O Hydrogen Bond in H2CO···H2O and H2CO···2H2O. The Journal of Chemical Physics. https://doi.org/10.1063/1.1676210

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