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/6-31+G**

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

Energy components

Dimer Donor Acceptor difference
Energy (hartrees) -190.735857 -76.348614 -114.378399 0.008844 23.2  kJ mol-1
Vibrational zero point energy (cm-1) 10768 4509 5597 -663 -7.9  kJ mol-1
Total         15.3  kJ mol-1