Studies towards rotational dynamics of dimethyl 2-(triphenylphosphoranylidene) succinate by 1 H NMR

Shirley M M Rodrigues,Vinicius Palaretti,Viviani Nardini,Mauricio Gomes Constantino,Gil Valdo J Da Silva

Journal of Molecular Structure（2013）

Cited 3|Views6

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Abstract

We describe here the dynamic H-1 NMR studies of dimethyl 2-(triphenylphosphoranylidene) succinate (1). Phosphorane 1 has a bond presenting slow (in the H-1 NMR time scale) rotation which results in spectra of two isomers at the same time. From the spectral data were calculated the rate constant and thermodynamic parameters for the rotational process. (C) 2013 Elsevier B.V. All rights reserved.

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Key words

Geometrical isomers,Dynamic 1H NMR,Gibbs free energy of activation,Solvent effects

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