Low-temperature NMR study of the reductive C,C-coupling of CNMe by (C 5Me 5) 2Z [formula omitted]H 2) and structural characterization of (C 5Me 5) 2Z [formula omitted](Me))

Abstract

Low-temperature NMR measurements within the range −45 to −10°C have provided spectroscopic evidence of the formation and sequential participation of two η 2-iminoacyl intermediates, ▪ and ▪, in the reductive coupling of two equivalents of CNMe by Cp* 2Z r(CH 2SiMe 2C H 2), where Cp* = C 5Me 5. The resultant product, Cp* 2Z r(N(Me)C(CH 2SiMe 2CH 2)=CN (Me)), has been characterized by spectroscopic and structural methods of analysis.