A Study of the Synthesis, Properties and Reaction Chemistry of Transition Metal Silylene Complexes

硅烯金属配合物是一种金属原子通过两对电子连接到硅原子上的化合物，在最近在首席研究员的实验室合成之前，人们并不知道这种配合物。由于这些配合物被认为是一些重要的硅化合物金属催化反应的中间体，本项目的结果有望提供对这些催化反应的更好理解，并为含硅材料的新反应途径提供指导。例如，该项目的一个目标是利用金属硅烷络合物开发合成聚硅烷的新途径，这种聚合物有望作为结构或电子材料具有有用的特性。本研究的方向是合成和研究晚期或低价过渡金属硅烯配合物。将开发用于合成Mn、Cr、Co、Re、Mo、Rh和Pt硅烯配合物的一般合成程序，并将对这些物质的化学和物理性质进行详细检查。硅烯配合物将通过x射线晶体学、Si-29核磁共振光谱、红外光谱和氧化还原电位的电化学测量来表征。

Silylene metal complexes, which are compounds in which a metal atom is attached by two pairs of electrons to a silicon atom, were not known prior to their recent synthesis in the Principal Investigator's laboratory. Since such complexes are believed to be involved as intermediates in a number of important metal-catalyzed reactions of silicon compounds, the results of this project are expected to provide a better understanding of these catalytic reactions, and also to lead to new reaction pathways to silicon-containing materials. For example, one goal of the project is to use metal silylene complexes to develop new routes to polysilanes, polymers which are expected to have useful properties as structural or electronic materials. This research is directed toward the synthesis and study of silylene complexes of late, or low valent transition metals. General synthetic procedures will be developed for the synthesis of silylene complexes of Mn, Cr, Co, Re, Mo, Rh, and Pt, and a detailed examination of the chemical and physical properties of these substances will be undertaken. The silylene complexes will be characterized by x-ray crystallography, Si-29 NMR spectroscopy, infrared spectroscopy and electrochemical measurements of redox potentials.