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Cu(Ⅰ)配位聚合物[Cu_3(CN)_3(3-pytpy)]_n的合成、晶体结构及其荧光性质

Synthesis,Crystal Structure and Fluorescence Property of Cu(Ⅰ) Coordination Polymer[Cu_3(CN)_3(3-pytpy)]_n
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摘要 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。 A Cu(Ⅰ) coordination polymer,[Cu3( CN)3( 3-pytpy) ]n( 1),was synthesized from 4'-( 4-pyridyl)-3,2'∶ 6',3″-terpyridine and Cu( OAc)2·H2O in mixed solvents of acetonitrile and water under hydrothermal conditions at 160℃. 1 was characterized by element analysis,IR,TGA and XRD. Single-crystal X-ray analysis revealed that 1 crystallizes in monoclinic,space group P21/ c with 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( Mo Kα) = 2. 799 mm-1,Dc= 1. 687 g / cm3,R1= 0. 0447 and wR2= 0. 1238。Each Cu( I) atom exhibits a 3-connecting mode,including two N atoms from a 3-pytpy ligand and a CN-group,respectively,and one C atom from another CN-group. Cu(Ⅰ) ions bridged by CN-groups to give a 1D meso-helical chains along the diagonal direction of the ac plane. And the chains are further linked by 3-pytpy ligands into wave-like 2D networks. The neighboring 2D layers are interconnected by the strong π…π interaction and stacked in an ABAB fashion to give a 3D supramolecular network. CCDC: 1053592.
出处 《化学通报》 CAS CSCD 北大核心 2015年第12期1123-1127,共5页 Chemistry
基金 四川省教育厅(12ZA090和15ZB0214) 绿色催化四川省高校重点实验室(LZJ14201) 四川理工学院(2012PY14和Y2014018)资助
关键词 配位聚合物 4'-(4-吡啶)-3 2'∶6' 3″-三联吡啶 晶体结构 荧光 Coordination polymer 4'-(4-Pyridyl)-3 2'∶ 6' 3″-terpyridine Crystal structure Fluorescence
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