Organonitrogen groups in metal carbonyl complexes. Part VI. Studies on the synthesis of (π-C5H5)Mo(CO)2N:CR2 complexes

Abstract

In the presence of added substrates such as Ph₂CO, Me₂CO, PhCN, PhNCO, PhNH₂, and trans-PhCHCHPh the reaction of Ph₂C:NLi with (π-C₅H₅)M(CO)₃Cl (M = Mo, W) yields (π-C₅H₅)M(CO)₂(N:CPh₂) in contrast to the reaction without the added substrates which produces (π-C₅H₅)M(CO)₂(Ph₂CNCPh₂). Studies have been directed towards determining the role of the added substrates, and various types of involvement are discussed and tested. Two forms of the complex (π-C₅H₅)Mo(CO)₂(N:CPh₂) are compared, one being assigned a monomeric and the other a dimeric formulation.