Summary
A theoretical study of the effects of non-specific solute-solvent interactions on the directly bonded carbon-proton couplings1 J(C–H), in acetaldehyde, acetone and acrylonitrile is presented. The solvent induced changes in these couplings calculated by an INDO-SCPT procedure incorporating a modified solvaton model are in satisfactory agreement with experiment and show significant improvement over the INDO-FPT calculations using the Klopman-Germer solvaton model.
Zusammenfassung
Es wird eine theoretische Studie zu den nichtspezifischen Lösungsmittelwechselwirkungen auf die Spin-Spin-Kopplungen direkt aneinander gebundener C- und H-Atome von Acetaldehyd, Aceton und Acrylnitril vorgestellt. Die vom Solvens induzierten Änderungen der Kopplungskonstanten werden von der INDO-SCPT-Methode unter Verwendung eines modifizierten Solvationsmodells zufriedenstellend wiedergegeben. Die Übereinstimmung mit den experimentellen Daten ist besser als INDO-FPT-Rechnungen mit dem Klopmann-Germer-Solvaton-Modell.
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Ebraheem, K.A.K., Shargi, S.N. & Kadum, S.A. INDO-SCPT calculations of the solvent dependence of some carbon-proton spin-spin coupling constants. Monatsh Chem 120, 923–930 (1989). https://doi.org/10.1007/BF00808763
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DOI: https://doi.org/10.1007/BF00808763