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Theoretical prediction of the hydrogen-bond basicity pKHB

Lamarche, Olivier J. and Platts, James Alexis 2002. Theoretical prediction of the hydrogen-bond basicity pKHB. Chemistry-a European Journal 8 (2) , pp. 457-466. 10.1002/1521-3765(20020118)8:2<457::AID-CHEM457>3.0.CO;2-5

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Ab initio and DFT calculations on around 65 hydrogen bond or Lewis bases and their complexes with hydrogen fluoride have been performed, and a range of calculated properties from both free bases and complexes correlated with pKHB, an experimental scale of hydrogen-bond basicity. For the entire range of bases, we found that the hydrogen-bond binding Gibbs free energy computed at the B3LYP/6-31+G(d,p) level of theory linearly correlated with pKHB. Further improvements in the correlation and prediction of pKHB were possible with a non-linear fit by considering the hydrogen bonding Gibbs free energy of another possible stereoisomeric 1:1 complex and/or that of a linear 2:1 complex, which included a second hydrogen fluoride.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Uncontrolled Keywords: basicity ; density functional calculations ; Gibbs free energy ; hydrogen bonds ; statistics
Publisher: WileyBlackwell
ISSN: 0947-6539
Last Modified: 24 Nov 2015 22:02

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