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Molecular Orbital Analysis of the Hydrogen Bonded Water Dimer

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Journal Sci Rep
Specialty Science
Date 2016 Feb 25
PMID 26905305
Citations 12
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Abstract

As an essential interaction in nature, hydrogen bonding plays a crucial role in many material formations and biological processes, requiring deeper understanding. Here, using density functional theory and post-Hartree-Fock methods, we reveal two hydrogen bonding molecular orbitals crossing the hydrogen-bond's O and H atoms in the water dimer. Energy decomposition analysis also shows a non-negligible contribution of the induction term. Our finding sheds light on the essential understanding of hydrogen bonding in ice, liquid water, functional materials and biological systems.

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