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Calculated Energies of Hydrogen Bonds

B3LYPultrafine/CEP-121G*

Dimer H Donor H Acceptor comment
H2ONH3 Water Ammonia Dimer H2O Water NH3 Ammonia

Energy components

Dimer Donor Acceptor difference
Energy (hartrees) -28.902736 -17.177811 -11.711803 0.013122 34.5  kJ mol-1
Vibrational zero point energy (cm-1) 12643 4521 7352 -770 -9.2  kJ mol-1
Total         25.2  kJ mol-1