TRIS(BIS[IMINO(METHOXY)METHYL]AMINATO)COBALT(III) - AN ELECTRONIC ANALOG OF TRIS(BETA-DIKETONATES)

The cobalt(III) complex [Co(HNCOMeNCOMeNH)(3)]. i.e. [CoL(3)], has bee n prepared from the copper precursor. [CuL(2)] in a Me(2)SO-CoS suspen sion. Its crystal and molecular structure has been determined by X-ray diffraction (R = 0.0577). The crystal consists of isolated molecules exhibiting a {CoN6) chromophore. In solution the complex is ESR silent . evidencing the absence of Co-II or Cu-II. The ligand L generates a r ather strong ligand field (Delta/hc = 21 200 cm(-1)) as follows from a n analysis of the electronic spectra.