Synthesis, Crystal Structure and Photoluminescence of a Novel Zinc-Isonicotinic Acid Complex

A novel zinc-isonicotinic acid complex [Zn(Hini)(Ini)Cl]n (1) (Hini = isonicotinic acid; Ini = deprotoned isonicotinic acid) has been synthesized via a hydrothermal reaction and structurally characterized by a single-crystal X-ray diffraction. Complex 1 crystallizes in the space group P21/c of the monoclinic system with four formula units in a cell: a = 7.654(4), b = 13.540(7), c = 14.213(3) Å, β= 122.21(1), V = 1246.2(10) A3, C12H9ClN2O4Zn, Mr = 346.05, Dc = 1.844 g/cm3, S = 1.017, μ(MoKα) = 2.199 mm–1, F(000) = 696, R = 0.0206 and wR = 0.0500. Complex 1 is characteristic of a novel one-dimensional (1-D) chain-like structure. Photoluminescence investigation reveals a strong emission, which may originate from π → π* charge-transfer interaction of the isonicotinic acid ligand.