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Calculated Energies of Hydrogen Bonds

PBEPBE_cp/6-31G*

Dimer H Donor H Acceptor comment
CH3OHH2O methanol water dimer CH3OH Methyl alcohol H2O Water

Energy components

Dimer Donor Acceptor difference
Energy (hartrees) -191.899765 -115.569159 -76.322481 0.008125 21.3  kJ mol-1
Vibrational zero point energy (cm-1) 16010 10838 4465 -706 -8.5  kJ mol-1
Total         12.9  kJ mol-1