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Calculated Energies of Hydrogen Bonds

B3LYPultrafine_cp_opt/6-31+G**

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

Energy components

Dimer Donor Acceptor difference
Energy (hartrees) -56.566984 -56.566985 -56.566985 -56.566986 -148516.6  kJ mol-1
Vibrational zero point energy (cm-1) 15091 7263 7263 -566 -6.8  kJ mol-1
Total         -148523.4  kJ mol-1