Insertion of isocyanides into actinoid–carbon bonds of tris-and bis-cyclopentadienyluranium mono-and di-alkyls

Abstract

Isocyanides react readily with UCp₃R and U(C₅Me₅)₂RCl (Cp cyclopentadienyl, R alky) to give iminoalkyl insertion compounds; with U(C₅Me₅)₂R₂, only one insertion reaction occurs, the second metal–carbon bond does not react; i.r. spectra of the insertion compounds exhibit unusually low CN stretching frequencies indicatives of strong metal–nitrogen bonding which causes non-equivalence in the Cp groups in the n.m.r. spectrum of UCp₃{η₂-CN(C₆H₃Me₂-2,6)Buⁿ}