Silylamide Complexes of Chromium(II), Manganese(II), and Cobalt(II) Bearing the Ligands N(SiHMe<sub>2</sub>)<sub>2</sub> and N(SiPhMe<sub>2</sub>)<sub>2</sub>
作者:Sonja N. König、Christoph Schädle、Cäcilia Maichle-Mössmer、Reiner Anwander
DOI:10.1021/ic5002682
日期:2014.5.5
Bis(dimethylsilyl)amide and bis(dimethylphenylsilyl)amide complexes of the divalent transition metals chromium, manganese, and cobalt were synthesized. Dimeric, donor-free Mn[N(SiHMe2)2]2}2 could be obtained via two different pathways, a salt metathesis route (utilizing MnCl2(thf)1.5 and LiN(SiHMe2)2) and a transsilylamination protocol (utilizing Mn[N(SiMe3)2]2(thf) and HN(SiHMe2)2). Addition of 1
A multinuclear (113Cd, 29Si and 13C) NMR study of some cadmium dialkylamides and their adducts
作者:Elmer C. Alyea、Keith J. Fisher
DOI:10.1016/s0277-5387(00)84422-8
日期:1986.1
New dialkylamido compounds of cadmium have been prepared and their physical and spectral properties studied. Adducts of Cd[N(SiMe3)2]2 with nitrogen donors have also been prepared and studied. Multinuclear NMR spectroscopy (113Cd, 29Si and 13C) has been used but no simple correlation of chemical shifts has been found except the downfield shifts for the 113Cd resonances accompanying an increae in coordination
Metal complex compositions and their use as catalysts to produce polydienes
申请人:Thiele K-H Sven
公开号:US20050090383A1
公开(公告)日:2005-04-28
This invention relates to metal complex compositions, their preparation and their use as catalysts to produce polymers of conjugate dienes through polymerization of conjugated diene monomers. The used metal complex compositions are transition metal compounds in combination with an activator compound, optionally with a transition metal halide compound and optionally a catalyst modifier and optionally an inorganic or organic support material. The metal complexes comprises metals of group 3 to 10 of the Periodic System of the Elements in combination with activators, and optionally transition metal halide compounds of groups 3 to 10 of the Periodic Table of the Elements including lanthanide metals and actinide metals and optionally, catalyst modifiers, especially Lewis acids and optionally an inorganic or organic support material. More in particular the invention relates metal complex compositions, their preparation and their use as catalysts to produce homopolymers of conjugated dienes, preferably, but not limited to, through polymerization of 1,3-butadiene or isoprene.