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| Crystal Structure, Thermal Behavior and Magnetic Properties of a New Copper(II) Complex Based on Biphenyl-2,5,2',2,5'-tetracarboxylic Acid |
| TIAN Dan,ZHOU Yan-Hong,GUAN Li,ZHU Xiao-Fei,PANG Yu,ZHANG Hong |
Department of Chemistry, Key Laboratory of Polyoxometalate Science of Ministry of Education, Northeast Normal University, Changchun |
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Abstract A new coordination polymer, [Cu2(bptc)(2,2'-bpy)2(H2O)]·H2O (2,2'-bpy = 2,2'- bipyridine, H4bptc = biphenyl-2,5,2',5'-tetracarboxylic acid), has been synthesized under hydrother- mal conditions. The structure was characterized by single-crystal X-ray diffraction, elemental analysis, IR spectra and thermogravimetric analysis. It crystallizes in triclinic, space group P-1 with a = 10.6447(12), b = 11.0191(12), c = 16.1253(18) Å, α = 79.538(2), β = 88.0720(10), γ = 61.6650(10)°, V = 1634.1(3) Å3, C36H26Cu2N4O10, Mr = 801.69, Z = 2, Dc = 1.629 g/cm3, μ(MoKa) = 1.370 mm-1, F(000) = 816.0, R = 0.0418 and wR = 0.1135 for 4416 observed reflections with I > 2σ(I). X-ray analysis shows that the title complex exhibits 1D wavelike [Cu2(bptc)]n chains with two types of diamond-shaped pores. These 1D chains are linked into a 3D supramolecular structure via O–H···O, C–H···O interactions and weak π···π stacking interactions. There exist H-bonded helices in a right- and left-handed sequence by turns in a 2D layer. Moreover, thermal stability has been studied and magnetic measurements show antiferromagnetic interactions for this complex.
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Received: 02 April 2010
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Corresponding Authors:
ZHANG Hong
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| Cite this article: |
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TIAN Dan,ZHOU Yan-Hong,GUAN Li, et al. Crystal Structure, Thermal Behavior and Magnetic Properties of a New Copper(II) Complex Based on Biphenyl-2,5,2',2,5'-tetracarboxylic Acid [J]. , 2011, 30(1): 120-126.
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| URL: |
| http://manu30.magtech.com.cn/jghx/EN/ OR http://manu30.magtech.com.cn/jghx/EN/Y2011/V30/I1/120 |
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2011, Vol. 30 
