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 μ₂ 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.