An Unusual Reaction of (β-Dimethylaminoethoxy)triethyltin with Phenyltin Trichloride. The First X-ray Structural Evidence of the Existence of Complexes R2SnXY·R2SnXY (R = Alkyl, Aryl; X, Y = Hal, OR, X ≠ Y) Both as Unsymmetrical Adducts [R2SnX2·R2SnY2] and Symmetrical Dimers [R2SnXY]2
✍ Scribed by Ivan A. Portnyagin; Mikhail S. Nechaev; Victor N. Khrustalev; Nikolay N. Zemlyansky; Irina V. Borisova; Mikhail Yu. Antipin; Yuri A. Ustynyuk; Valery V. Lunin
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 140 KB
- Volume
- 2006
- Category
- Article
- ISSN
- 1434-1948
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✦ Synopsis
Abstract
The substituent exchange reaction of PhSnCl~3~ with [Et~3~Sn(OCH~2~CH~2~NMe~2~)] gives rise unexpectedly to the unsymmetrical adduct [Ph~2~SnCl~2~·Ph~2~Sn(OCH~2~CH~2~NMe~2~)~2~] (2). It has been unambiguously proved for the first time that compounds of the RSnX~3~ type are able to undergo the hydrocarbon substituent redistribution reaction. The analogous tin complexes [Et~2~SnCl~2~·Et~2~Sn(OMe)~2~] (5) and [Bu~2~Sn(OAc)~2~·Bu~2~Sn(OMe)~2~] (6), which have ligands other than β‐dimethylaminoethoxy and could be considered as “organotin analogs of Grignard reagents” have symmetrical dimeric structures, i.e., can be formulated as [Bu~2~Sn(OMe)(OAc)]~2~ and [Et~2~Sn(OMe)Cl]~2~, respectively. Both types of structures, viz., unsymmetrical adduct (2) and symmetrical dimer (5, 6), have been characterized by X‐ray diffraction analysis. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)