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Calculated Energies of Hydrogen Bonds

PBEPBE/STO-3G

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

Energy components

Dimer Donor Acceptor difference
Energy (hartrees) -111.448690 -55.716920 -55.716920 0.014849 39.0  kJ mol-1
Vibrational zero point energy (cm-1) 15069 7117 7117 -834 -10.0  kJ mol-1
Total         29.0  kJ mol-1