Syntheses, structures, characterization and photoluminescent properties of six coordination polymers based on multidentate N-donor ligands and polycarboxylate anions
作者:Wei-Qiu Kan、Shi-Zheng Wen、Yu-He Kan、Hua-You Hu、Shao-Yue Niu、Xing-Yan Zhang
DOI:10.1016/j.poly.2014.08.020
日期:2015.1
A series of coordination polymers constructed from tripodal N-donor ligands and polycarboxylate anions, namely, [Ag6(3,4 '-tmbpt)(btc)2]center dot 2H(2)O (1), [Ag-2(3,4 '-tmbpt)(H(2)btec).H2O-120 (2), [Ag-2(4,4 '-tmbpt)(Hbtc).H2O (3), [Cd-3(4,4 '-tmbpt)(btc)(2)(H2O)6]center dot 7H(2)O (4), [Co(4,4'-tmbpt)(btec)0.5(F120)1 (5) and [Ni(4,41-tmbpt)(btec)0.5 (H2O)] (6), where 3,4 '-tmbpt = 1-((1H-1,2,4-triazol-1-yl)methyl)-3-(4-pyridy1)-5-(3-pyridy1)-1,2,4-triazole, 4,4 '-tmbpt = 1 -((1H-1,2,4-triazol-1-y1)methyl)-3,5-bis(4-pyridy1)-1,2,4-triazole, H(3)btc = 1,3,5-benzenetricarboxylic acid, and RIbtec = 1,2,4,5-benzenetetracarboxylic acid, have been hydrothermally prepared. Single crystal X-ray diffraction analyses indicate that compound 1 exhibits a 3D (3,4,6)-connected framework with (4.6(2))(2)(6.8(5))(2)(4.6(2),8(3).12) topology. Compound 2 has a 3D (3,4)-connected framework with (6(3))2(4(2).6(4))(4(2).6(3).8) topology. Compound 3 exhibits a 2D layer structure. Compound 4 shows a 3D 2-fold interpenetrating framework with (6.10(2)) topology. Compounds 5 and 6 exhibit similar 2D -> 3D polythreading architectures. These compounds have been characterized by infrared spectra (IR), elemental analyses and powder X-ray diffraction (PXRD) analyses. The effects of the organic anions on the structures of the compounds have been discussed. Moreover, the photoluminescent properties of the compounds have been investigated. (C) 2014 Elsevier Ltd. All rights reserved.