Ni(C_8H_7O_3)_2(H_2O)_2配合物的合成及晶体结构

SYNTHESIS AND CRYSTAL STRUCTURE OF Ni(C_8H_7O_3)_2(H_2O)_2

合成了镍的香草醛三元配合物 ,得到了单晶 ,测定了晶体结构 .结果表明该化合物属单斜晶系 ,CC 空间群 ,其晶胞参数为 :a=2 .1 82 7(3 ) nm,b=1 .0 5 0 3 9(1 6) nm,c=0 .773 93 (1 2 ) nm;β=1 0 4.92 4(3 )°.该配合物分子式为 :C1 6 H1 8Ni O8,Mr=3 97.0 1 ,配合物是六配位的变形八面体构型 .

The title complex is synthesized by the reaction of taurine vanillin Schiff base and nickel acetate in water-ethanol solution.But the crystal structure of the complex show that the compound does not contain taurine.The crystal structure is determined by X-ray diffraction method and the chemical formula weight of the complex is 379.01,monoclinic system,space groupC Cand cell parameters:a= 2.1827(3)nm,b=1.05039(16)nm,c=0.77393(12)nm;β=104.924(3)°,V=1.7145(5)nm3,Z=4,D c=1.538g/cm3,μ=1.172mm -1,andF(000)=824.The Ni(Ⅱ) is coordinated by six oxygen atoms,in which four oxygen atoms derive from two vanillin ligands and two oxygen atoms derive from water ligands,at the same time the Ni(Ⅱ) forms a distorted geometry octahedral.The compound is a three-dimensional network structure formed by hydrogen bonding.