2014
DOI: 10.5935/0100-4042.20140108
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Related Properties to Acidity and Basicity From Computational Chemistry Approach

Abstract: do Rio Grande do Norte, 59078-970 Natal -RN, BrasilRecebido em 12/09/2013; aceito em 28/01/2014; publicado na web em 21/3/2014 RELATED PROPERTIES TO ACIDITY AND BASICITY FROM COMPUTATIONAL CHEMISTRY APPROACH. Analytical Chemistry books lack a clear link between thermodynamic and equilibrium approaches involving acids and bases. In this work, theoretical calculations were performed to search for these relations. An excellent relationship was found between difference in Gibbs free energy, ∆G of acid dissociation… Show more

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“…Functionals such as M06-L or M06-2X should be used to computationally treat such systems because they can provide a good description for transition metals and noncovalent interactions compared to other functionals such as GGA (generalized gradient approximation) or LDA (local density approximation). 20 More robust calculations, as previously employed by our group for transition metal complexes, 21 would demand much more time even in powerful computers, which would make a computational chemistry course or practice unfeasible due to length of the experiment. Consequently, we have used semiempirical methods (low computational cost) for this laboratory experiment which provide comparable results to the experimental ones.…”
Section: ■ Theoretical Backgroundmentioning
confidence: 99%
“…Functionals such as M06-L or M06-2X should be used to computationally treat such systems because they can provide a good description for transition metals and noncovalent interactions compared to other functionals such as GGA (generalized gradient approximation) or LDA (local density approximation). 20 More robust calculations, as previously employed by our group for transition metal complexes, 21 would demand much more time even in powerful computers, which would make a computational chemistry course or practice unfeasible due to length of the experiment. Consequently, we have used semiempirical methods (low computational cost) for this laboratory experiment which provide comparable results to the experimental ones.…”
Section: ■ Theoretical Backgroundmentioning
confidence: 99%