Vibrational analysis of metal diimine dithiolate mixed ligand complexes

The IR spectra of the M(mnt)(baba) where M = Ni and Pd, mnt = 1,2-maleonitr ile and baba = biacetylbisanyline, were recorded in the high as well in the low energy region. A complete assignment of the observed bands was perform ed based on well-documented references. Further, a normal coordinate analys is was carried out taking into account C-2v symmetry, and based in a simpli fied model in order to investigate the force field of both metal complexes and the potential energy distribution (PED) of the distinct modes of the qu elate structure. (C) 1999 Elsevier Science B.V. All rights reserved.