Journal
PHYSICA SCRIPTA
Volume 98, Issue 1, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1402-4896/acaa72
Keywords
hydrogen bond; energy property; covalent character; AIM
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CCSD(T) calculations on H2S horizontal ellipsis X (X = N-2, CO, CS and SiO) series provide reliable structures, energy properties, and covalency of hydrogen bonds (HB). Symmetry adapted perturbation theory analysis demonstrates the dominant role of electrostatic interactions for the relatively stronger HBs, while the dispersion demonstrates the attraction of the very weak HB of H2S horizontal ellipsis N-2. The covalent character is analyzed by AIM theory and topological analysis on electron density functions, indicating the very weak strength of HBs with a non-covalent character.
CCSD(T) calculations on H2S horizontal ellipsis X (X = N-2, CO, CS and SiO) series provide reliable structures, energy properties and covalency of hydrogen bonds (HB). Symmetry adapted perturbation theory analysis demonstrates the dominant role of electrostatic interactions for the relative stronger HBs; and the dispersion demonstrates the attraction of the very weak HB of H2S horizontal ellipsis N-2. Upon formation of HBs, the electrostatic and dispersion energies play important role. The covalent character is analyzed by AIM theory and topological analysis on electron density functions; and it suggests the very weak strength of HBs with non-covalent character.
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