return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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Calculated Energies of Hydrogen Bonds

PBEPBEultrafine_cp/6-31G*

Dimer H Donor H Acceptor comment
H2ONH3 Water Ammonia Dimer H2O Water NH3 Ammonia

Energy components

Dimer Donor Acceptor difference
Energy (hartrees) -132.805829 -76.322481 -56.470493 0.012855 33.8  kJ mol-1
Vibrational zero point energy (cm-1) 12498 4455 7283 -760 -9.1  kJ mol-1
Total         24.7  kJ mol-1