Abstract: A new Zn(Ⅱ)-ttp coordination polymer {[Zn₂(ttp-COO)(MoO₄) (OH)]·2H₂O}_n(ttp =4′-(4-carboxyphenyl)-2,2′:6′,2″-terpyridine) was synthesized by hydrothermal reaction at 160 ℃ for 3 days and characterized by FT-IR, fluorescence, TGA measurements and X-ray crystallography. The crystallographic data are as follwing: triclinic, P_-1,a=0.799 92(4) nm, b=1.215 35(6) nm, c=1.279 28(6) nm, α=82.234 0(10)°, β=72.168 0(10)°, γ=80.657 0(10)°, V=1.163 40(10) nm³, Z=2, R1=0.033 5, wR2=0.094 2. In the complex, there are two independent zinc atoms on crystallography, in which Zn1 (Ⅱ) with three nitrogen atoms from the ligand, an oxygen atom and a water molecule molybdate ions is combined to form a five-coordinate of a quadrangular pyramid shape, Zn2 (Ⅱ) with an oxygen atom in the ligand carboxylate ions, two oxygen atoms molybdate ions, and μ2-OH groups is combined into a tetrahedral configuration. The complex was also characterized by TGA and fluorescence.

Key words: hydrothermal reaction, coordination polymer, synthesis, crystal structure, lumines- cent properties