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Calculated Energies of Hydrogen Bonds

B3LYP/CEP-121G*

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

Energy components

Dimer Donor Acceptor difference
Energy (hartrees) -41.213264 -17.177811 -24.024882 0.010571 27.8  kJ mol-1
Vibrational zero point energy (cm-1) 16047 4523 10847 -677 -8.1  kJ mol-1
Total         19.7  kJ mol-1