【摘要】 在常温下,通过溶剂置换法制备了[Ni(qina)2(H2O)2].2DMSO单晶,其中qina-为喹哪啶酸根,DMSO为二甲亚砜.配合物属于单斜晶系,C2/m空间群.2个qina-配体以氮原子和氧原子与Ni(Ⅱ)离子反式螯合配位,2个H2O分子则以氧原子与Ni(Ⅱ)离子轴向配位,形成八面体配合物.配合物分子之间通过氢键和π-π堆积等弱相互作用构筑成三维超分子结构.该配合物能显著提高乙酸-1-萘酯的水解反应速率,当配合物浓度为1.0×10-4mol/L时,在pH=8.44的乙酸-1-奈酯体系中,酯的水解速率提高了365倍.更多还原

【Abstract】 A single crystal complex [Ni(qina)2(H2O)2]·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,π-π 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 1.0×10-4 mol/L,pH 8.44.The enhancement multiple was 365.更多还原