一个新颖的热重排反应的研究

A novel thermal rearrangement reaction between Si-Si (or Ge-Ge, Si-Ge) bond and Fe-Fe (or Ru-Ru) bond has been studied in detail based on the previous work.The effects on the rearrangement reaction of the substituents on the cyclopentadienyl ring, replacement of carbonyl by isocyanide or bis(phosphine) ligand have been also studied. The stereochemistry of the rearrangement was discovered and the possible mechanism was suggested. The scope of the reaction was studied and found that it is a new reaction with some universality in organometallic chemistry. During the study of the reaction of doubly bridged biscyclopentadiene with metal carbonyls, a series of biscyclopentadienyl metal-metal bond complexes with the longest metal-metal bond and a kind of novel complexes with Si(or Ge)-M bond have been synthesized. The super long metal-metal bond show some characteristic properities, may have some special reactivities and potential use.

近年我组对硅、锗桥连双环戊二烯基四羰基二铁类化合物的合成、结构及反应性进行了系统研究，发现了一类新颖热重排反应，拟设计合成双桥及双膦取代双环戊二烯基四羰基二铁，研究重排反应的立体化学。同时将反应扩展至钌类似物，研究重排反应的变化及产生新反应的可能机理，进一步深入研究这一重排反应及由其产生的新反应。