156882-98-3Relevant academic research and scientific papers
Retention of stereochemistry in the formation and fragmentation of diosmacyclobutanes, and other evidence against a diradical mechanism
Hembre,Ramage,Scott,Norton
, p. 2995 - 3001 (1994)
Two results argue against a diradical intermediate in the exchange of diosmacyclobutanes with free olefins. The diosmacyclobutane Os2(CO)8(μ-propene) reacts with vinylcyclopropane to give as the sole product a diosmacyclobutane bearing an intact cyclopropane ring. Repeated exchange of trans-ethylene-1,2-d2 with the same ligand in a diosmacyclobutane shows >99.1% stereochemical excess per exchange half-life. These exchange reactions do not involve mononuclear olefin complexes.
