Synthesis and Crystal Structure of a Novel Three-dimensional Cu(II) Compound{[Cu(2,2'-bipy)(C_7H_4O_5S)(H_2O)_2]·H_2O}_n

The title compound, {[Cu(2,2?-bipy)(C7H4O5S)(H2O)2]?H2O}n (2,2?-bipy = 2,2?- bipyridine), was synthesized by the hydrothermal reaction of Cu(NO3)2?3H2O, 2,2?-bipyridine and 2-sulphobenzoic acid, and structurally characterized by single-crystal X-ray diffraction analysis. The crystal is of triclinic, space group P1 with a = 9.21(3), b = 10.17(3), c = 10.77(3) ?, α = 77.017(16), β = 89.80(8), γ = 68.46(7)°, V = 911(5) ?3, Z = 2, (D/s)max= 0.001, Mr = 473.94, Dc = 1.728 g/cm3, μ(MoKα) = 1.365 mm-1, F(000) = 486, the final R = 0.0246 and wR = 0.0628 for 3809 observed reflections with I 2σ(I). The mononuclear crystal structure extends into a two-dimensional net- work via hydrogen-bonding interactions and a three-dimensional framework is further formed by means of π-π stacking interactions.