Synthesis, Structure and Catalysis Performance of Complex [Ni(qina)2(H2O)2]•2DMSO

A single crystal complex [Ni(qina)(2)(H2O)(2)]center dot 2DMSO(Hqina = quinaldinic acid, DMSO = dimethyl sulfoxide) was synthesized at room temperature by the solvent substitution method, which belongs to monoclinic system with space group C2/m. Two qina ligands chelate a nickel(II) ion by O and N atoms and two H2O coordinate a Ni(II) ion by two O atoms at an axis. The complex formed inerratic octahedron configuration, and H bonds, pi-pi stacking were observed between the molecules. 1-Naphthyl acetate hydrolysis velocity has been remarkably enhanced by the title complex, when the concentration of the title complex was at 1.0 x 10(-4) mol/L, pH 8.44. The enhancement multiple was 365.