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Calculated Energies of Hydrogen Bonds

B3LYPultrafine/6-311G*

Dimer H Donor H Acceptor comment
H2OH2O water dimer H2O Water H2O Water

Energy components

Dimer Donor Acceptor difference
Energy (hartrees) -152.881613 -76.433933 -76.433933 0.013746 36.1  kJ mol-1
Vibrational zero point energy (cm-1) 0 4518 4518 9036 108.1  kJ mol-1
Total         144.2  kJ mol-1