Synthesis and Crystal Structure of a New Chain Coordination Polymer [Cu(inio)_2(H_2O)]_∞(Inio = Isonicotinic Acid N-Oxide)

作     者：李秀玲 陈久桐 牛德仲 盛居廷 张大鹏 

作者机构：Department of Chemistry Xuzhou Normal University Xuzhou 221116 China Fujian Institute of Research on the Structure of MatterThe Chinese Academy of Sciences Fuzhou 350002 China 

出 版 物：《Chinese Journal of Structural Chemistry》 (结构化学（英文）)

年 卷 期：2003年第22卷第4期

页      面：415-418页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070304[理学-物理化学(含∶化学物理)] 0703[理学-化学] 070301[理学-无机化学] 

基　　金：the Natural Science Foundation of Xuzhou Normal University (01BXL009) 

主　　题：crystal structure copper isonicotinic acid N-oxide elongated square pyramid hydrogen bond π-πinteraction 

摘      要：A new Cu(Ⅱ) coordination polymer [Cu(inio)2(H2O)] (inio = isonicotinic acid N-oxide) with chemical formula C12H10CuN2O7 was prepared and its crystal structure has been determined by X-ray analysis. The complex crystallizes in the monoclinic system, space group C2/c with a = 12.455(3), b = 6.202(1), c = 16.555(3) ? b = 106.776(3), V = 1224.3(4) 3, Z = 4, Mr = 357.76, Dc =1.941 g/cm3, m(MoKa) = 1.827 mm-1, F(000) = 724, R = 0.0601 and wR = 0.1417 for 908 observed reflections (I 2s(I)). The Cu(Ⅱ) atom is coordinated by an elongated square pyramid geometry. The deprotonated isonicotinic acid N-oxides form a double-bridge between each pair of Cu(Ⅱ) ions in trans form through two oxygen atoms from the carboxyl groups and two other oxygen atoms from the -NO groups, respectively, which leads to an infinite one dimensional chain. The two adjacent elongated Cu(Ⅱ) square pyramidal geometries are arranged in trans form in the same chain. The OH…O hydrogen bonds extend the chain structure into two-dimensional layers.