Ligand field parameters of Mo(III) complexes

Spectral absorption data of some octahedral chromophores of Mo3+ are reported, together with values of Δ and β 55 parameters, whenever experimentally attainable. For complexes with sufficiently electronegative ligands, almost complete ligand field spectra can be observed, whereas in other complexes intense charge transfer bands occur; with ligands of low electronegativity, charge transfer bands from the central ion to the ligands are frequently encountered.