Cobalt (II) and Copper (I) Complexes of Rigid Bidentate [N-(2, 6-Diisopropyl-phenyl)imino]acenapthenone Ligand: Synthesis and Structural Studies

The cobalt(II) complex [CoCl2(2, 6-iPrC6H3-BIAO)]2 (1) of rigid unsymmetrical imine, carbonyl mixed ligand [N-(2, 6-diisopropylphenyl)-imino]acenapthenone] (2, 6-iPrC6H3-BIAO) (L1) can be achieved by the reaction of CoCl2 and neutral [N-(2, 6-diisopropylphenyl)-imino]acenapthenone] ligand. When ligand L1 reacted with CuCl in dichloromethane solution, only nitrogen coordinated copper complex [CuCl(2, 6-iPrC6H3-BIAO)] (2) was obtained. In the solid-state structure, compound 1 is dimeric through the chelating two mu 2 chlorine atoms and each cobalt atom adopts either a distorted trigonal bipyramidal or a distorted square pyramidal arrangement. In contrast, the molecular structure of compound 2 reveals that copper is coordinated by imino nitrogen and adopts a linear arrangement around the central metal atom. The crystal structure of the rigid bidentate mixed nitrogen and oxygen ligand (2, 6-iPrC6H3-BIAO) (L1) is also reported.