Synthesis and structure of well-defined tricarbonyl iron(0) complexes with multivinylsilicon ligands
作者:Agnieszka Kownacka、Ireneusz Kownacki、Maciej Kubicki、Bogdan Marciniec、Richard Taylor
DOI:10.1016/j.jorganchem.2013.11.007
日期:2014.1
In this paper the synthesis of new iron(0) carbonyl complexes with π-bonded ligands containing at least two silicon-vinyl groups of formula [Fe(CO)3L] and [Fe(CO)3}2L′] are described. The synthesis is done via UV light initiated substitution of carbonyl ligands in [Fe(CO)5] or [Fe2(CO)9] precursors by organosilicon dienes, trienes, vinyl functional silicones (L), tetraenes (L′). The spectroscopic
在本文中,新的具有π键配体的新的铁(0)羰基配合物的合成为至少两个分子式为[Fe(CO)3 L]和[Fe(CO)3 } 2 L']的硅乙烯基基团。描述。合成完成后通过在的[Fe(CO)羰基配位体的UV光引发取代5 ]或[铁2(CO)9 ]由有机硅二烯,三烯,乙烯基官能化的硅氧烷(L),四烯(L')的前体。这些新颖的配合物的光谱研究(1 H和13 C NMR)和X射线分析表明,它们都是5个坐标,均表现出两个几何环境,即三角双锥体或四角锥体。
Phosphine nickel(0) π-complexes with vinylcyclosilazane—synthesis and structure
Synthesis, spectroscopic (H-1, C-13, P-31, Si-29 NMR) characterisation and X-ray structure of the first nickel(0) pi-complex with vinylcyclosilazane [Ni(PPh3)}(2)mu-(eta-CH2=CH(Me)Si(mu-NH))(4)}] (1a) have been presented. This is the first report on the structure of a TM complex with a vinylsilazane ligand. Complex la is synthesised by the reaction of [Ni(cod)(2)] with cyclotetra (vinylmethylsilazane). The complex occupies a special position of the space group P2(1)/c on the centre of symmetry that lies in the middle of the cyclotetrasilazane ring. The coordination of nickel is close to triangular one. (C) 2002 Elsevier Science Ltd. All rights reserved.