Supramolecular Formation via Hydrogen Bonding in Copper and Nickel Complexes with 2-Hydroxynicotinic Acid  

作　　者：温德才 刘世雄 

机构地区：[1]Department of Chemistry,Fuzhou University

出　　处：《Chinese Journal of Structural Chemistry》2007年第11期1281-1286,共6页结构化学（英文）

基　　金：the National Natural Science Foundation of China (No. 20431010)

摘　　要：Two complexes, Cu（HnicO）2 1 and Ni（HnicO）2（H2O）2 2 （H2nicO = 2-hydroxynicolinic acid）, were synthesized by hydrothermal reactions and structurally characterized. Complex 1 crystallizes in monoclinic, space group P21/n, with a = 8.314（7）, b = 6.275（4）, c = 11.283（7）A, β = 98.32（3）°, V = 582.5（7）A^3, Z = 2, Mr = 339.74, Dc = 1.937 g/cm3, F（000） = 342, μ = 1.908 mm^-1, S = 1.097, the final R = 0.0284 mad wR = 0.0781 for 1177 observed reflections with Ⅰ 〉 2σ（Ⅰ）. Complex 2 crystallizes in monoclinic, space group P21/c, with a = 7.438（5）, b = 12.22（1）, c = 7.537（5）A,β = 100.07（3）°, V= 674.3（8）A3, Z = 2, Mr = 370.95, Dc = 1.827 g/cm^3, F（000） = 380, = 1.487 mm^-1, S = 1.041, the final R = 0.0335 and wR = 0.0779 for 1202 observed reflections with I 〉 2σ（Ⅰ）. There are extended 3D framework structures in complexes 1 and 2 due to the N-H…O and C-H…O hydrogen bonds. The copper atom in 1 has square planar coordination, while the nickel atom in 2 adopts octahedral coordination geometry. The TG curve shows that complex 2 is stable in solid state to 150 ℃.Two complexes, Cu（HnicO）2 1 and Ni（HnicO）2（H2O）2 2 （H2nicO = 2-hydroxynicolinic acid）, were synthesized by hydrothermal reactions and structurally characterized. Complex 1 crystallizes in monoclinic, space group P21/n, with a = 8.314（7）, b = 6.275（4）, c = 11.283（7）A, β = 98.32（3）°, V = 582.5（7）A^3, Z = 2, Mr = 339.74, Dc = 1.937 g/cm3, F（000） = 342, μ = 1.908 mm^-1, S = 1.097, the final R = 0.0284 mad wR = 0.0781 for 1177 observed reflections with Ⅰ 〉 2σ（Ⅰ）. Complex 2 crystallizes in monoclinic, space group P21/c, with a = 7.438（5）, b = 12.22（1）, c = 7.537（5）A,β = 100.07（3）°, V= 674.3（8）A3, Z = 2, Mr = 370.95, Dc = 1.827 g/cm^3, F（000） = 380, = 1.487 mm^-1, S = 1.041, the final R = 0.0335 and wR = 0.0779 for 1202 observed reflections with I 〉 2σ（Ⅰ）. There are extended 3D framework structures in complexes 1 and 2 due to the N-H…O and C-H…O hydrogen bonds. The copper atom in 1 has square planar coordination, while the nickel atom in 2 adopts octahedral coordination geometry. The TG curve shows that complex 2 is stable in solid state to 150 ℃.

关 键 词：2-hydroxynicolinic acid copper complex nickel complex hydrogen bond crystal structure 

分 类 号：O621.2[理学—有机化学]