Alkyne- and alkyl-tris(cyclopentadienyl) complexes of uranium(III)

Abstract

Treatment of cp₃U(THF)(1)(cp =η-C₅H₅, THF = tetrahydrofuran) with diphenylacetylene affords the alkyne complex cp₃U(Ph–CC–Ph); (1) reacts with RLi (R = Me, Buⁿ) to give the alkyl compounds cp₃URLi (3); hydrogenolysis of (3) in the presence of a terminal alkene R′(–H) leads to the formation of cp₃UR′Li.