Hydrothermal synthesis and crystal structure of copper （Ⅱ） coordination polymer composed of helix-like chains： [Cu（NIeH）（bpy）]

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, ,6= 95.13（3）°, V= 1.6455（6） nm^3 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.

Hydrothermal synthesis and crystal structure of copper (II) coordination polymer composed of helix-like chains: [Cu(NIPH)(bpy)]

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°C, as a result of its high thermal stability. Magnetic measurements indicate an antiferromagnetic behavior of compound 1.