TIN(IV) CHLORIDE COMPLEXES OF β-CHLOROVINYL ALDEHYDES: A MULTINUCLEAR NMR CHARACTERIZATION IN SOLUTION

被引：6

作者：

Barhoumi-Slimi, Thouraya ^{[1
]}

Sanhoury, M. A. K. ^{[1
]}

Ben Dhia, M. T. ^{[1
]}

Khaddar, M. R. ^{[1
]}

机构：

[1] Univ Tunis El Manar, Fac Sci Tunis, Dept Chem, Lab Coordinat Chem, Tunis 2092, Tunisia

来源：

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS | 2013年 / 188卷 / 09期

关键词：

alpha; beta -unsaturated aldehydes; tin(IV) chloride; Lewis base; C-13; NMR; Sn-119; NUCLEAR MAGNETIC-RESONANCE; DIELS-ALDER REACTIONS; PHOSPHORYL COMPLEXES; ALUMINUM CHLORIDE; SOLUTION BEHAVIOR; STEREOCHEMISTRY; ALLYLSTANNANES; CONDENSATIONS; REACTIVITY; CATALYSIS;

D O I：

10.1080/10426507.2012.740705

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reaction of SnCl4 with -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 (H-1, C-13, and Sn-119) 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 Sn-119 NMR chemical shifts and used to classify the aldehydes studied according to their Lewis basicity.

引用

页码：1220 / 1227

页数：8

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