Tin(IV) Chloride Complexes of β-Chlorovinyl Aldehydes: A Multinuclear Nmr Characterization in Solution

The reaction of SnCl 4 with β-chlorovinyl aldehydes in anhydrous dichloromethane gave a series of octahedral complexes of the general formula SnCl 4 ·2L (L = aldehyde). The adducts have been characterized in solution using multinuclear ( 1 H, 13 C, and 119 Sn) NMR and IR spectroscopy. Solution NMR s...

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Bibliographic Details
Published in:Phosphorus, sulfur, and silicon and the related elements sulfur, and silicon and the related elements, 2013-09, Vol.188 (9), p.1220-1227
Main Authors: Barhoumi-Slimi, Thouraya, Sanhoury, M. A. K., Ben Dhia, M. T., Khaddar, M. R.
Format: Article
Language:English
Subjects:
C NMR
Lewis base
Sn NMR
tin(IV) chloride
α,β-unsaturated aldehydes
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Summary:The reaction of SnCl 4 with β-chlorovinyl aldehydes in anhydrous dichloromethane gave a series of octahedral complexes of the general formula SnCl 4 ·2L (L = aldehyde). The adducts have been characterized in solution using multinuclear ( 1 H, 13 C, and 119 Sn) NMR and IR spectroscopy. Solution NMR studies show that the complexes undergo rapid ligand dissociation at ambient temperature. Ligand exchange is slowed significantly at low temperature, such that, in most of the complexes, it is possible to identify both the cis and trans isomers with predominance of the cis form. The magnitude of the metal-ligand interaction was estimated on the basis of 119 Sn NMR chemical shifts and used to classify the aldehydes studied according to their Lewis basicity.
ISSN:1042-6507
1563-5325
DOI:10.1080/10426507.2012.740705