Chemistry Letters, Vol.30, No.10, 1068-1069, 2001
A geometrical isomeric pair of novel cobalt(III) complexes containing diphenylphosphine: cis- and trans-[Co(dtc)(2)(PHPh2)(2)]BF4 (dtc = N,N-dimethyldithiocarbamate)
The stable title cobalt(III) complexes containing PHPh2 have been prepared and investigated for their crystal structures and spectroscopic properties. The cis-isomer was converted photochemically to the trans-isomer, which isomerized thermally to the original cis-isomer. The structural parameters and the ligand-field strengths of the PHPh2 complexes were not predictable from the sigma -donicity of PHPh2.