Hydrothermal synthesis and crystal structure of copper (Ⅱ)coordination polymer composed of helix-lik

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Hydrothermal reactions of Cu (Ⅱ) acetate, 2,2'-bipyridyl (bpy) with 5-nitroisophthalic acid (H2NIPH) resulted in a new coordination polymer [Cu(NIPH)(bpy)] 1. Single crystal X-ray diffraction experiment indicates that 1 possesses a single helixlike chains, of which Cu atoms are coordinated by NIPH ligands and bpy ligands. Compound 1 crystallizes in the space group P2(1)/c, a = 0.955(19) nm, b = 1.259(3) nm, c= 1.3737(3) nm, β= 95.13(3)°, V=1.6455(6) nm3 and Z = 4. The TGA analysis shows that 1 has no remarkable weight loss up to 284℃, as a result of its high thermal stability. Magnetic measurements indicate an antiferromagnetic behavior of compound 1.
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