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/3-21G

Dimer H Donor H Acceptor comment
H2OH2CO water formaldehyde dimer H2O Water H2CO Formaldehyde

Energy components

Dimer Donor Acceptor difference
Energy (hartrees) -189.618938 -75.886477 -113.729316 0.003146 8.3  kJ mol-1
Vibrational zero point energy (cm-1) 10928 4169 5594 -1165 -13.9  kJ mol-1
Total         -5.7  kJ mol-1