Synthesis,StructureandPhotoluminescenceofCocrystalofBis[2-(benz（oxa/imida）zol-2-yl)phenolato-к2N,O]zinc（Ⅱ）BeingSiteOccupancyDisorderwithaHeteroatomRatioofNHtoO（0.408/0.592）

The zinc(Ⅱ) complex with Hpbx (Hpbx = 2-(benzoxazol-2-yl)phenol) and Hpbm (Hpbm = 2-(benzimidazol-2-yl)phenol), namely [Zn(pbm)2]1.633[Zn(pbx)2]2.367·DMF·2H2O 1, has been synthesized and characterized by X-ray crystallography, FTIR and elemental analysis. The coordination structures are statistically disordered and can be regarded as a co-crystal of [Zn(pbm)2] and [Zn(pbx)2] with the ratio of ca. 0.408/0.592. Solvate water and DMF molecules are also present in the lattice. Crystal data for 1: monoclinic, space group P21/c, Mr = 2049.02, Z = 2, a = 9.7571(6), b = 25.6415(16), c = 19.8675(10) , β = 111.342(2)o, V = 4629.7(5) 3, Dc = 1.470 g/cm3, μ = 1.100 mm-1, F(000) = 2104, R = 0.0575 and wR = 0.1282 for 5528 observed reflections (I > 2σ(I)). The photoluminescent spectra for this compound have also been studied.