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作 者:张竹艳[1] 高山[1] 霍丽华[1] 赵辉[1] 赵经贵[1]
出 处:《黑龙江大学自然科学学报》2007年第5期678-681,共4页Journal of Natural Science of Heilongjiang University
基 金:国家自然科学基金资助项目(20101003);黑龙江省自然科学基金资助项目(B0007);黑龙江大学杰出青年基金资助项目
摘 要:合成了一个新的配合物[Mg(H2O)6](p-OPA)2.2H2O(p-OPA-=4-氧-1(4H)-吡啶乙酸根),并对其进行了元素分析和单晶X射线的表征。配合物晶体属单斜晶系,空间群为P 21/c,晶胞参数为a=1.2561(3)nm,b=1.2947(3)nm,c=0.67885(14)nm,β=99.32(3)°,V=1.0895(4)nm3,Z=2,Mr=472.69,Dc=1.441g/cm3,μ=0.154mm-1,F(000)=500,最终R=0.0525,wR=0.1398。Mg(Ⅱ)原子与六个水分子配位形成八面体构型,4-氧-1(4H)-吡啶乙酸根作为抗衡离子,配阳离子与阴离子之间通过静电吸引和氢键作用形成了三维氢键超分子网络结构。A novel complex of [ Mg( HaO)6 (p - OPA)2 · 2H20] (p - OPA^-= 4 - oxo - 1 (4H) - pyridineace- tate) was synthesized and characterized by elemental analysis and single crystal X -ray diffraction. The title complex belongs to monoclinic system with space group P21/c, a = 1. 2561 ( 3 ) nm, b = 1. 2947 (3) nm, c = 0. 67885 (14)nm, /3=99.32(3)°, V= 1.0895(4)nm^, Z=2, Mr =472.69, Dc = 1. 441g/cm Mg(Ⅱ) atom resided in the inversion center is coordina^3,/z =0. 154 mm^-1, F (000) =500, R =0. 0525, wR =0. 1398. Theted by six water molecules, having a nearly ideal octahedron geometry. The 4 -oxo- 1 (4H) -pyridineacetate monoanion is free state as counterions. Furthermore, a three -dimensional hydrogen -bond supramolecular framework is formed by intramolecule hydrogen bonds and eletrostatic force interactions between the anions and cations.
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