Hydrothermal Synthesis and Crystal Structure of a Three-dimensional Nickel(II) Coordination Polymer: [Ni_2(NIPH)_2(bimb)_(2.5)(H_2O)]n·3nH_2O

A new metal-organic coordination polymer [Ni_2(NIPH)_2(bimb)_2.5(H_2O)]n·3nH_2O 1 (H_2NIPH = 5- nitroisophthalic acid, bimb = 1,4-bis(imidazol-1-yl)-butane) has been hydrothermally synthesized and structurally characterized by elemental analysis, IR, TG and single-crystal X-ray diffraction. The title complex crystallizes in the orthorhombic system, space group P4(1)2(1)2 with a = 17.3533(16), b = 17.3533(16), c = 30.802(6) , V = 9275(2) ~3, C_(41)H_(49)N_(12)Ni_2O_(16), M_r = 1083.34, D_c = 1.552 g/cm~3, μ(MoKα) = 0.897 mm~(-1), F(000) = 4504, Z = 8, the final R = 0.0383 and wR = 0.0952 for 7343 observed reflections (I 2σ(I)). It exhibits a three-dimensional network structure.