Transition metal chemistry: IX. Synthesis and IR study of Ni(CO) 3L where L is a tertiary substituted aryl group VB derivative

Abstract

The synthesis of a series of compounds of general formula LNi(CO) 3 is presented, the ligands employed being aryl Group VB derivatives of formulae (C 6H 5) 3E, (4-XC 6H 4) 3E and E = P, As, Sb and X = Cl, F. The CO stretching frequencies and their shifts have been discussed for these compounds in terms of the σ bonding involved and a correlation between the CO force constants and the bonding suggests some interesting conclusions regarding the bonding in analogous LCr(CO) 5 derivatives.