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Calculated Energies of Hydrogen Bonds

MP2/CEP-121G

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

Energy components

Dimer Donor Acceptor difference
Energy (hartrees) -23.046962 -11.519950 -11.519950 0.007062 18.5  kJ mol-1
Vibrational zero point energy (cm-1) 15311 7354 7354 -604 -7.2  kJ mol-1
Total         11.3  kJ mol-1