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首页> 外文期刊>Crystal growth & design >A series of coordination polymers constructed by flexible 4-substituted bis(1,2,4-triazole) ligands and polycarboxylate anions: Syntheses, structures, and photoluminescent properties
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A series of coordination polymers constructed by flexible 4-substituted bis(1,2,4-triazole) ligands and polycarboxylate anions: Syntheses, structures, and photoluminescent properties

机译：由柔性的4-取代的双（1,2,4-三唑）配体和聚羧酸根阴离子构成的一系列配位聚合物：合成，结构和光致发光性质

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摘要

Eleven Zn/Cd-containing coordination polymers (CPs) incorporating both flexible 4-substituted bis(1,2,4-triazole) ligands and polycarboxylate anions, namely, [Zn(L1)(o-BDC)]·1.5H_2O (1), [Zn(L1)(m-BDC)] (2), [Cd_2(L1)(BTEC)]·H_2O (3), [Zn(L2)(m-BDC)]·1. 25H_2O (4), [Zn(L2)(p-BDC)]·4H_2O (5), [Cd(L2)(p-BDC)]·H_2O (6), [Zn_2(L2)(BTEC)] (7), [Zn(L3)(m-BDC)]·3.5H_2O (8), [Zn_2(L3)(p-BDC)_ 2]·2H_2O (9), [Zn_2(L3)_ 2(BTEC)]·2H_2O (10), and [Cd_2(L3)_ 2(BTEC)] (11) {L1 = 1,2-bis[2-(4H-1,2,4-triazol-4-yl)phenoxy]ethane, L2 = 1,2-bis[3-(4H-1,2,4-triazol-4-yl)phenoxy]ethane, L3 = 1,2-bis[4-(4H-1,2,4- triazol-4-yl)phenoxy]ethane, o-H_2LBDC = phthalic acid, m-H_ 2BDC = isophthalic acid, p-H_2LBDC = terephthalic acid, and H_4BTEC = pyromellitic acid} have been prepared and identified by physical measurements. Compound 1 possesses a layered structure. Compound 2 shows one-dimensional chains. Weak π-π intermolecular stackings further join these chains into a two-dimensional (2D) supramolecular layered structure. Compound 3 displays a three-dimensional (3D) (4,8)-connected (3~ 2·4~2·5~2)(3~4· 4~8·5~(12)·6~4) net. Compound 4 consists of two interlocked single-wall metal-organic nanotubes (SWMONTs) with both polyrotaxane and polycatenane characters. Compound 5 exhibits a 3D 5-fold interpenetrating diamond motif. Compound 6 furnishes a 3D α-Po net. Compound 7 reveals a 3D (4,6)-connected net with (4~3·6~ 3)(4~6·6~6·8~3) topology. Compound 8 features a 2D 4-connected network with (6~5·8) topology. Compound 9 shows a 3D 3-fold interpenetrating α-Po net. Compounds 10 and 11 display 3D (4,4)-connected nets with the same (6~ 4·7·8)(6~2·8~4) topology. The effects of the bis(triazole) ligands, aromatic polycarboxylate anions, and metals ions on the framework assemblies have been discussed. Solid-state luminescent of compounds 1-11 are reported as well. Moreover, fluorescent properties of compounds 4-7 in various solvent suspensions were investigated at room temperature.
机译：包含柔性的4-取代的双（1,2,4-三唑）配体和聚羧酸根阴离子的11种含Zn / Cd配位聚合物（CP），即[Zn（L1）（o-BDC）]·1.5H_2O（1 ），[Zn（L1）（m-BDC）]（2），[Cd_2（L1）（BTEC）]·H_2O（3），[Zn（L2）（m-BDC）]·1。 25H_2O（4），[Zn（L2）（p-BDC）]·4H_2O（5），[Cd（L2）（p-BDC）]·H_2O（6），[Zn_2（L2）（BTEC）]（7 ），[Zn（L3）（m-BDC）]·3.5H_2O（8），[Zn_2（L3）（p-BDC）_ 2]·2H_2O（9），[Zn_2（L3）_2（BTEC）] ·2H_2O（10）和[Cd_2（L3）_2（BTEC）]（11）{L1 = 1,2-双[2-（4H-1,2,4-三唑-4-基）苯氧基]乙烷，L2 ＝ 1,2-双[3-（4H-1,2,4-三唑-4-基）苯氧基]乙烷，L3 = 1,2-双[4-（4H-1,2,4-三唑）已经制备并通过物理测量鉴定了-4-基）苯氧基]乙烷，邻-H_2LBDC =邻苯二甲酸，间-H_2BDC =间苯二甲酸，对-H_2LBDC =对苯二甲酸和H_4BTEC =均苯四酸}。化合物1具有层状结构。化合物2显示一维链。弱的π-π分子间堆积进一步将这些链连接成二维（2D）超分子层状结构。化合物3显示三维（3D）（4,8）连接的（3〜2·4〜2·5〜2）（3〜4·4〜8·5〜（12）·6〜4）网。化合物4由两个互锁的单壁金属有机纳米管（SWMONT）组成，具有聚轮烷和聚catenane的特征。化合物5表现出3D 5倍互穿的钻石图案。化合物6提供3Dα-Po网。化合物7揭示了一个具有（4〜3·6〜3）（4〜6·6〜6·8〜3）拓扑的3D（4,6）连接的网络。化合物8具有2D 4连接的网络，具有（6〜5·8）拓扑。化合物9显示了3D 3倍互穿的α-Po网。化合物10和11显示具有相同（6〜4·7·8）（6〜2·8〜4）拓扑的3D（4,4）连接的网络。讨论了双（三唑）配体，芳香族聚羧酸根阴离子和金属离子对骨架组件的影响。还报道了化合物1-11的固态发光。此外，在室温下研究了化合物4-7在各种溶剂悬浮液中的荧光性质。

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