Rational assembly of Pb(II)/Cd(II)/Mn(II) coordination polymers based on flexible V-shaped dicarboxylate ligand: Syntheses, helical structures and properties
Rational assembly of Pb(II)/Cd(II)/Mn(II) coordination polymers based on flexible V-shaped dicarboxylate ligand: Syntheses, helical structures and properties
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DOI：
10.1016/j.jssc.2014.12.013
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发表时间：
2015-05
影响因子：
3.3
通讯作者：
Gao-Shan Yang;Chong-Bo Liu;Hong Liu;Julianne Robbins;Z. J. Zhang;Hongbing Yin;Hui-Liang Wen;Yu-Hua Wang
中科院分区：
文献类型：
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作者：
Gao-Shan Yang;Chong-Bo Liu;Hong Liu;Julianne Robbins;Z. J. Zhang;Hongbing Yin;Hui-Liang Wen;Yu-Hua Wang
以2,2′-[六氟异丙基双（对苯氧基）]二乙酸（H2L）与Pb(II)/Cd(II)/Mn（II）为原料，在4,4′-联吡啶（4,4′-bipy）或1,10-菲罗啉（phen）的辅助配体存在下，水热反应合成了[Pb(L)(H2O)](1)、[Pb(L) 2(4,4′-bipy)](2)、[Pb2(L)2(4,4′-bipy))0.5](3)、[Cd(L)(4,4′-bipy)](4)]·H2O(5)和[Mn(L)(4,4′-bipy)]·H2O(6)六个新的配位聚合物。络合物1和4 - 6表现为二维结构，而络合物2- 3表现为三维框架，其中l2 -配体将金属离子连接到1,3 - 6的单链螺旋链和2的双链螺旋链上。络合物2和3也含有双链金属- o螺旋。拓扑分析表明，络合物1和4都表示4- connecteddsqlnet，2表示6-connectedpcunet，3显示一个新颖的(3,12)-连接网络，而e5和6显示(3,5)-connectedgek1net。六个配合物表现出两种无机-有机连通性：io2for1,4 - 6和io2for2 - 3。研究了4 - 5的光致发光性能和6的磁性能。
Six new coordination polymers, namely, [Pb(L)(H2O)] (1), [Pb(L)(phen)] (2), [Pb2(L)2(4,4′-bipy)0.5] (3), [Cd(L)(phen)] (4), [Cd(L)(4,4′-bipy)]·H2O (5) and [Mn(L)(4,4′-bipy)]·H2O (6) have been synthesized by the hydrothermal reaction of 2,2′-[hexafluoroisopropylidenebis(p-phenyleneoxy)]diacetic acid (H2L) with Pb(II)/Cd(II)/Mn(II) in the presence of ancillary ligands 4,4′-bipyridine (4,4′-bipy) or 1,10-phenanthroline (phen). Complexes1and4–6exhibit 2-D structures, and complexes2–3display 3-D frameworks, of whichL2−ligands join metal ions to single-stranded helical chains of1,3–6and double-stranded helical chains of2. Complexes2and3also contain double-stranded Metal–O helices. Topology analysis reveals that complexes1and4both represent 4-connectedsqlnet,2represents 6-connectedpcunet,3exhibits a novel (3,12)-connected net, while5and6display (3,5)-connectedgek1net. The six complexes exhibit two kinds of inorganic–organic connectivities: I0O2for1,4–6, and I1O2for2–3. The photoluminescent properties of4–5and the magnetic properties of6have been investigated.