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Calculated Energies of Hydrogen Bonds

CCD/3-21G

Dimer H Donor H Acceptor comment
NH3NH3 Ammonia Dimer NH3 Ammonia NH3 Ammonia

Energy components

Dimer Donor Acceptor difference
Energy (hartrees) -112.001869 -55.995146 -55.995146 0.011577 30.4  kJ mol-1
Vibrational zero point energy (cm-1) 15284 7283 7283 -718 -8.6  kJ mol-1
Total         21.8  kJ mol-1