配合物[Ni(IDB)_2][C_6H_4(OH)COO]·ClO_4·CH_3CH_2OH·H_2O的合成、晶体结构及催化尿素水解活性的研究  

Synthesis and Crystal Structure of Complex [Ni(IDB)_2][C_6H_4(OH)COO]·ClO_4·CH_3CH_2OH·H_2O and Its Catalytic Activity in Hydrolyzing Urea

作　　者：陈彦国[1] 廖展如[2] 李武客[2] 李东风[2] 梅伏生[2] 魏永革[3] 

机构地区：[1]湖北师范学院化学系,黄石435002 [2]华中师范大学化学系,武汉430079 [3]北京大学化学系,北京100871

出　　处：《化学学报》2000年第10期1191-1195,共5页Acta Chimica Sinica

基　　金：国家自然科学基金(29771012)

摘　　要：报道三齿配体N,N-二(2-苯并咪唑甲基)亚胺(IDB)及单核镍(Ⅱ)配合物[Ni(IDB)_2][C_6H_4(OH)COO]·ClO_4·CH_3CH_2OH·H_2的合成、晶体结构和催化尿素水解活性.该配合物为三斜晶系,P1空间群,a=1.1010(2)nm,b=1.3800(3)nm,c=1.5550(3)nm,α=100.75(3)°,β=102.97(3)°,γ=107.56(3)°,V=2.1113(7)nm^3,Z=2,F(000)=952,D_c=1.438g/cm^3,M_r=914.01,μ=0.591mm^(-1).最终因子R[I>2σ(I)]:R_1=0.0591,wR_2=0.1325;R(全部数据):R_1=0.1302,wR_2=0.1572.结构分析表明,镍(Ⅱ)分别与两个配体中的四个苯并咪唑氮和两个亚胺基氮配位形成畸变的八面体构型.用气相色谱仪测定配合物催化尿素水解的活性.The title complex [Ni(IDB)2][C6H4(OH)COO]·ClO4·CH3CH2OH·H2O [IDB= N,N-di(2-benzimidazolylmethyl) imine] has been synthesized and characterized by elemental analysis, IR and UV - Vis spectra. The crystal structure has been determined by single crystal X - ray diffraction. The crystal of mononuclear Ni(Ⅱ) complex is triclinic system, space group, P1, a - 1.1010(2)nm, b = 1.3800(3)nm, c = 1.5550(3)nm, α= 100.75(3)°, β= 102.97(3)°, γ = 107.56(3)°, V = 2.1113(7)nm3, Z = 2, F(000)=952, Dc= 1.438g/cm3, Mr = 914.01, μ = 0.591mm-1. The final R[I >2σ (I)]: R1 = 0.0591, wR2=0.1325; R(all data): R1 = 0.1302, wR2 = 0.1572. The nickel( Ⅱ) atom in the cation has distorted octahedronal coordination geometry and is six - coordinated by six nitrogen atoms: four nitrogen atoms of the benzimidazole groups and two imine nitrogen atoms from the ligand IDB. The catalytic activity of the complex in the hydrolysis of urea was measured with gas chromatography.

关 键 词：镍(Ⅱ)配合物 晶体结构 催化水解活性 尿素 IDB 

分 类 号：O641.4[理学—物理化学]