Reactions of strained organosilicon heterocycles with nonacarbonyldi-iron(0). Part 2. Preparation and reactions of silaferracyclopentanes
- 1 January 1978
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 6,p. 665-673
- https://doi.org/10.1039/dt9780000665
Abstract
The formation of silaferracyclopentanes, by the reaction of silacyclobutanes with iron carbonyls, is described and their properties and reactions are discussed. The parent complex, 2,2,2,2-tetracarbonyl-1,1 -dimethyl-1 -sila-2- ferracyclopentane, has been prepared by the reaction of Me2[graphic omitted]CH2 with [Fe(CO)9](the preferred route) or, under u.v. irradiation, with [Fe(CO)5] or [Fe3(CO)12]; it has also been synthesised from Na2[Fe(CO)4] and SiMe2(CH2CH2CH2Cl)Cl. Analogues having aryl, alkoxy-, or chloro-substituents at silicon are described, together with derivatives of 1,1,3,3-tetramethyl-1,3-disilacyclobutane and two silabenzocyclobutenes. Infrared, 1H and 13C n.m.r., and mass spectroscopic data are discussed. Chemical properties of the silaferracyclopentanes are contrasted with those of the parent silacyclobutanes. The complex [graphic omitted]SiMe2)(CO)4] shows some activity as a hydrosilylation catalyst.Keywords
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