The M–C–O bending vibrations of complexes containing the M(CO)2 group

Abstract

The infrared spectra of a series of complexes containing the M(CO)₂ group have been investigated, and absorption bands due to δ(MCO) and ν(MC) vibrations identified and reported. An attempt has been made to correlate the symmetry co-ordinates and observed band intensities for the δ(MCO) vibrations, and thereby to assign the spectra. The infrared active δ(MCO) vibrations of [Co(CO)₄]₂Hg, [Et₃PCo(CO)₃]₂Hg, and [Et₃PCo(CO)₃]₂ have also been assigned using the same principles.