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Calculated Energies of Hydrogen Bonds

HF/CEP-121G*

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

Energy components

Dimer Donor Acceptor difference
Energy (hartrees) -22.853658 -11.424698 -11.424698 0.004262 11.2  kJ mol-1
Vibrational zero point energy (cm-1) 15112 7338 7338 -437 -5.2  kJ mol-1
Total         6.0  kJ mol-1