[Ni(qina)_2(H_2O)_2]·2DMSO配合物的合成、结构及其催化性能  

Synthesis,Structure and Catalysis Performance of Complex [Ni(qina)_2(H_2O)_2]·2DMSO

作　　者：王传胜[1] 吴琼[1] 朱明昌[1] 高恩君[1] 

机构地区：[1]沈阳化工学院配位化学研究室,沈阳110142

出　　处：《高等学校化学学报》2009年第5期862-865,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20671064)资助

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.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.

关 键 词：配合物 镍(Ⅱ)离子 喹哪啶酸 催化性质 

分 类 号：O614[理学—无机化学]