Syntheses, structures, and fluorescent properties of two helical complexes based on a long rigid N-heterocyclic ligand
Syntheses, structures, and fluorescent properties of two helical complexes based on a long rigid N-heterocyclic ligand
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DOI：
10.1080/00958972.2012.719610
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发表时间：
2012-08
影响因子：
1.9
通讯作者：
G. Han;Yajuan Mu;Dongqing Wu;Yanyuan Jia;H. Hou;Yaoting Fan
中科院分区：
文献类型：
--
作者：
G. Han;Yajuan Mu;Dongqing Wu;Yanyuan Jia;H. Hou;Yaoting Fan
长氮杂环配体2，6-双（3-（吡啶-3-基）-1，2，4-三唑基）吡啶（H2 bptp）与Zn（II）/Pb（II）反应生成{[Zn（bptp）（H2O）] ·2 H2O·CH 3CN} n（1）和{[Pb（bptp）] · H2O} n（2）。单晶X射线衍射分析表明，1和2具有2-D网络含有交替的左手和右手螺旋图案。在拓扑上，1具有（4，4）拓扑，而2表现出（6，3）拓扑。1和2中的bptp 2 −分别采用syn-anti和syn-syn构象。结果表明，长刚性氮杂环配体可以采用不同的构象与金属配位，有利于构建具有不同拓扑结构的螺旋结构。两种配合物光致发光性质的差异表明，金属离子和配位环境对配合物的光致发光行为有显著影响。
A long N-heterocyclic ligand, 2,6-bis(3-(pyrid-3-yl)-1,2,4-triazolyl)pyridine (H2bptp), and Zn(II)/Pb(II) yield {[Zn(bptp)(H2O)] · 2H2O·CH3CN} n (1) and {[Pb(bptp)] · H2O} n (2). Single-crystal X-ray diffraction analysis reveals that 1 and 2 possess 2-D networks containing alternating left- and right-handed helical motifs. Topologically, 1 features a (4,4) topology, while 2 exhibits a (6,3) topology. The bptp2− in 1 and 2 adopts syn-anti and syn-syn conformations, respectively. The results indicate that the long rigid N-heterocyclic ligand can adopt different conformations to coordinate with metals, beneficial to construction of helical structures with diverse topologies. The difference between the photoluminescence properties of the two complexes reveals that metal ions and coordination environment have significant influences on photoluminescence behavior.