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在160℃下,以4’-(4-吡啶基)-3,2’∶6’,3″-三联吡啶(3-pytpy)为配体,Cu(OAc)2·H2O为金属盐,通过水热法在乙腈/水的混合溶剂中合成了一个Cu(Ⅰ)配位聚合物[Cu3(CN)3(3-pytpy)]n(1)。通过元素分析、红外光谱、X-射线粉末衍射和热重分析对所合成的配合物进行了表征,并用X-射线单晶衍射分析确定了晶体结构。结果表明,其晶体属单斜晶系,空间群为P21/c,Mr=579.03,a=7.132(6),b=17.431(13),c=18.388(13),β=94.284(14)°,V=2280(3)3,F(000)=1152,Z=4,μ=2.799mm-1,Dc=1.687g/cm3,最终残差因子R1=0.0447,wR2=0.1238。Cu(Ⅰ)均为畸变三角形配位模式,配位原子分别为三联吡啶配体吡啶环上的N原子、CN-基N原子和另一个CN-基C原子。CN-基桥联Cu(Ⅰ)离子形成沿ac平面对角线方向延伸的一维内消旋螺旋链[Cu(Ⅰ)-CN]n,配体3-pytpy则进一步桥联这些一维链形成二维“波浪型”网络结构,2D层以ABAB方式堆积并通过吡啶环间的π…π堆积作用拓展为三维超分子结构。
Cu (OAc) 2 · H2O is a metal salt with 4 ’- (4-pyridyl) -3,2’: 6 ’, 3 “-pyridyl (3-pytpy) A Cu (Ⅰ) coordination polymer [Cu3 (CN) 3 (3-pytpy)] n (1) was synthesized by hydrothermal method in acetonitrile / water mixture. The crystal structure was confirmed by X-ray single crystal diffraction analysis.The results show that the crystal is monoclinic with space group P21 / c, Mr = 579.03, a = 7.132 (6) , b = 17.431 (13) , c = 18.388 (13) , β = 94.284 (14) °, V = 2280 4, μ = 2.799mm-1, Dc = 1.687g / cm3, the final residual factor R1 = 0.0447, wR2 = 0.1238.Cu (Ⅰ) are all distorted triangular coordination modes. The coordination atoms are terpyridine ligand pyridine A N atom on the ring, a CN-group N atom and another CN-group C atom. The CN-bridged Cu (I) ions form a one-dimensional meso-helices chain extending diagonally along the ac plane [Cu Ⅰ) -CN] n ligand 3-pytpy further bridge these one-dimensional chains to form a two-dimensional ”wave type " network structure, 2D layer ABAB accumulation and through the π Expand the role of three-dimensional supramolecular structure.