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Calculated Energies of Hydrogen Bonds

QCISD/cc-pVTZ

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

Energy components

Dimer Donor Acceptor difference
Energy (hartrees) -152.658748 -76.324884 -76.324884 0.008980 23.6  kJ mol-1
Vibrational zero point energy (cm-1) 9804 4548 4548 -709 -8.5  kJ mol-1
Total         15.1  kJ mol-1