Hydrothermal Synthesis and Crystal Structure of a New 2-D Organic–Inorganic Hybrid Wells–Dawson-Type Polyoxometalate

Abstract

A new 2-D organic–inorganic hybrid Wells–Dawson-Type polyoxotungstate K[Cu(Im)2]6P2W18O62·2H2O·(OH) (Im = Imidazole) (1) has been synthesized under hydrothermal conditions and characterized by IR spectroscopy, TG, and single crystal X-ray structural analysis. Crystal data for 1: triclinic, P-1, a = 15.3676(12) A, b = 15.5059(14) A, c = 24.6437(19) A, α = 98.088(2)°, β = 96.930(2)°, γ = 119.312(2)°, Z = 2. Single crystal X-ray structural analysis reveals that the [P2W18O62]6− polyoxoanion is linked by [Cu(Im)2]+ cation to form a 1-D chain along the a axis which is connected by K+ cation down the c axis to form a 2-D layer. A new organic–inorganic hybrid Wells–Dawson-Type polyoxotungstate K[Cu(Im)2]6P2W18O62·2H2O·(OH) (Im = Imidazole) (1) has been synthesis under hydrothermal conditions. Compound 1 exhibits a 2D zigzag layer structure based on [P2W18O62]6− polyoxoanion units linked by [Cu(Im)2]+ and K+ cation.