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Calculated Energies of Hydrogen Bonds

MP2/LANL2DZ

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

Energy components

Dimer Donor Acceptor difference
Energy (hartrees) -132.442877 -76.135419 -56.292436 0.015022 39.4  kJ mol-1
Vibrational zero point energy (cm-1) 12715 4415 7290 -1009 -12.1  kJ mol-1
Total         27.4  kJ mol-1