A new Zn(II) coordination polymer [Zn3(BTC)2(4,4'-bpy)(CO)2]n (1, H3BTC = 1,3,5-benzenetricarboxylic acid, 4,4'-bpy = 4,4'-bipyridine) has been prepared through urothermal reaction of zinc nitrate hexahydrate with 1,3,5-benzenetricarboxylic acid and 4,4'-bipyridine, and characterized by elemental analysis, IR spectroscopy, TGA and powder XRD, and its crystal structure was determined by single-crystal X-ray diffraction analysis. The title compound crystallizes in the monoclinic system, space group C2/c, with a = 10.262(3), b = 18.838(5), c = 15.083(4)/k, fl = 99.203(4)°, V = 2878.3(14) A3, C30H14Zn3N2O14, Mr= 822.54, Z = 4, Dc = 1.898 g/cm3,μ = 2.561 mm-1,F(000) = 1640, R = 0.0363 and wR = 0.0932 for 2828 observed reflections (I 〉 2σ(I)). X-ray analysis shows that the asymmetric unit of the title compound contains two crystallographically unique Zn(lI) atoms which are connected by BTC3- ligands and 4,4'-bpy coligands to form a 3D framework with 1D channels. The solid luminescence of ligand and the title complex was also studied at room temperature.
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TANG Qiang,LIN Meijuan,WANG Xiaoping,LING Qidan 1 (Fujian Key Laboratory of Polymer Materials,College of Materials Science and Engineering,Fujian Normal University,Fuzhou 350007)