Organic–inorganic hybrid coordination polymers based on tetratopic pyridyl-bridging ligand: Syntheses, structures, and luminescent properties

2009 ◽  
Vol 362 (15) ◽  
pp. 5219-5223 ◽  
Author(s):  
Jian-Guo Lin ◽  
Fang-Ming Wang ◽  
Yan-Yan Xu ◽  
Chang-Sheng Lu ◽  
Qing-Jin Meng ◽  
...  
Author(s):  
Yue-Feng Zhang ◽  
Jian-Ping Ma ◽  
Qi-Kui Liu ◽  
Yu-Bin Dong

A novel bridging asymmetric benzimidazole ligand, 4-{2-[3-(pyridin-4-yl)phenyl]-1H-benzimidazol-1-ylmethyl}benzoic acid, was used to construct three isomorphous two-dimensional coordination polymers, namelycatena-poly[chlorido(μ3-4-{2-[3-(pyridin-4-yl)phenyl]-1H-benzimidazol-1-ylmethyl}benzoato)zinc(II)], [Zn(C26H18N3O2)Cl]n, (I), and the bromide, (II), and iodide, (III), analogues. Neighbouring two-dimensional networks are stacked into three-dimensional frameworksviainterlayer π–π interactions. The luminescent properties of (I)–(III) were investigated and they display an obvious red-shift in the solid state at room temperature.


2013 ◽  
Vol 28 (3) ◽  
pp. 207-211 ◽  
Author(s):  
Piotr Putaj ◽  
Bartłomiej Gaweł ◽  
Wiesław Łasocha

Structures of [Cd(C2H8N2)Cl2]n(1) and [Cd(C2H8N2)Br2]n(2) were solved from powder diffraction data. Compound (1) crystallizes in the space group Pbam (No. 55), a = 9.9021(7) Å, b = 7.8186(6) Å, c = 4.0705(3) Å, V = 315.13(3) Å3, Z = 2. (2) is isostructural: space group Pbam (No. 55), a = 10.405(2) Å, b = 7.8634(8) Å, c = 4.2079(5) Å, V = 344.28(6) Å3, Z = 2. The investigated compounds are examples of two-dimensional hybrid coordination polymers, in which neighboring metal centers are bridged via both organic and inorganic moieties: ethylenediamine molecules and halide anions. Both crystal structures were solved ab initio from powder data using direct methods.


2012 ◽  
Vol 68 (6) ◽  
pp. m147-m151 ◽  
Author(s):  
Na Qin ◽  
Chao-Wei Zhao ◽  
Jian-Ping Ma ◽  
Qi-Kui Liu ◽  
Yu-Bin Dong

The new 4-amino-1,2,4-triazole asymmetric bridging ligand 4-amino-5-(pyridin-3-yl)-3-[4-(pyridin-4-yl)phenyl]-4H-1,2,4-triazole (L) has been used to generate three novel isomorphic one-dimensional coordination polymers,viz. catena-poly[[tris[dichloridomercury(II)]-bis{μ3-4-amino-5-(pyridin-3-yl)-3-[4-(pyridin-4-yl)phenyl]-4H-1,2,4-triazole}] acetonitrile monosolvate], {[Hg3Cl6(C18H14N6)2]·CH3CN}n, (I), and the bromido, {[Hg3Br6(C18H14N6)2]·CH3CN}n, (II), and iodido, {[Hg3I6(C18H14N6)2]·CH3CN}n, (III), analogs. The asymmetric ligand acts as a tridentate ligand to coordinate the three different HgIIcenters (two of which are symmetry-related). Two ligands and two symmetry-related HgIIcenters form centrosymmetric rectangular units which are linked into one-dimensional chainsviathe other unique Hg atoms, which sit on mirror planes. The chains are elaborated into a three-dimensional structureviainterchain hydrogen bonds. The acetonitrile solvent molecules are located in ellipsoidal cavities. The luminescent character of these three coordination complexes was investigated in the solid state.


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