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Calculated Energies of Hydrogen Bonds

PBEPBEultrafine_cp_opt/6-31G*

Dimer H Donor H Acceptor comment
H2OCH3OH water methanol dimer H2O Water CH3OH Methyl alcohol

Energy components

Dimer Donor Acceptor difference
Energy (hartrees) -191.900909 -76.322481 -115.569157 0.009271 24.3  kJ mol-1
Vibrational zero point energy (cm-1) 16086 4455 10815 -816 -9.8  kJ mol-1
Total         14.6  kJ mol-1