PROPERTIES OF HYDROGEN-BONDED COMPLEXES OBTAINED FROM THE B3LYP FUNCTIONAL WITH 6-31G(D,P) AND 6-31-SETS - COMPARISON WITH MP2(G(D,P) BASIS)6-31+G(D,P) RESULTS AND EXPERIMENTAL-DATA/
Je. Delbene et al., PROPERTIES OF HYDROGEN-BONDED COMPLEXES OBTAINED FROM THE B3LYP FUNCTIONAL WITH 6-31G(D,P) AND 6-31-SETS - COMPARISON WITH MP2(G(D,P) BASIS)6-31+G(D,P) RESULTS AND EXPERIMENTAL-DATA/, Journal of physical chemistry, 99(27), 1995, pp. 10705-10707
Density functional B3LYP/6-31G(d,p) calculations fail to yield reliabl
e binding energies, intermolecular distances, and hydrogen-bonded X-H
frequency shifts for eight selected hydrogen-bonded complexes for whic
h experimental data are available. Properties of these complexes obtai
ned with the B3LYP functional and the 6-31+G(d,p) basis are usually im
proved, and can be similar to MP2/6-31+G(d,p) values. In those cases w
here noticeable differences exist between B3LYP16-31+G(d,p) and MP2/6-
31+G(d,p) results, the MP2/6-31+G(d,p) values are in better agreement
with experimental data.