Coordination Compounds of Cobalt(II) and Zinc(II) with N,N'-((Hydrazine-1,2-diylidene-bis(methanylylidene))bis(2,1-phenylene))bis(4-methylbenzenesulfonamide): Synthesis and Properties

Abstract

N,N'-((Hydrazine-1,2-diylidene-bis(methanylylidene))bis(2,1-phenylene))bis(4-methylbenzene-sulfonamide) (H₂L) and its binuclear complexes Zn₂L₂ and Co₂L₂ are synthesized. The compositions and structures of H₂L and its complexes are determined by elemental analysis and IR and ¹H NMR spectroscopy (for Zn₂L₂). The structures of H₂L and Co₂L₂ are determined by XRD (CIF files CCDC no. 2405868 for H₂L and no. 2390599 for Co₂L₂·4DMSO). The magnetic properties of Co₂L₂ and photoluminescence properties of H₂L and Zn₂L₂ are studied. The Zn(II) complex exhibits the photoluminescence properties in an acetonitrile solution and in the solid state (\(\lambda _{{{\text{max}}}}^{{{\text{fl}}}}\) = 584 and 532 nm) with quantum yields of 0.06 and 0.68, respectively. The Co(II) complex exhibits the properties of slow magnetic relaxation.