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Calculated Energies of Hydrogen Bonds

B3LYPultrafine_cp/6-31+G**

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

Energy components

Dimer Donor Acceptor difference
Energy (hartrees) -192.175900 -115.734872 -76.434049 0.006979 18.3  kJ mol-1
Vibrational zero point energy (cm-1) 15928 10825 4498 -605 -7.2  kJ mol-1
Total         11.1  kJ mol-1