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/6-311+G(3df,2pd)

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

Energy components

Dimer Donor Acceptor difference
Energy (hartrees) -132.899537 -76.378112 -56.509689 0.011736 30.8  kJ mol-1
Vibrational zero point energy (cm-1) 12552 4528 7272 -752 -9.0  kJ mol-1
Total         21.8  kJ mol-1