Abstract
A new organic–inorganic hybrid compound based on dawson polyoxotungstate, Na3(C7NH8O2)3 [P2W18O62].16H2O have been isolated under autogenous pressure method and characterized by single-crystal X-ray diffraction, infrared, ultraviolet spectroscopy, cyclic voltammetry and Thermogravimetric analysis (TGA). This compound crystallized in the triclinic system, space group P-1, with a = 14.063 (1) Å; b = 17.009 (1) Å; c = 17.868 (1) Å; α = 79.88 (1)°; β = 77.14 (1)°; γ = 79.25 (1)° and Z = 2. The crystal structures of the compounds exhibit three-dimensional supramolecular assembly based on the extensive hydrogen bonding interactions between organic cations, sodium cations, water molecules and Dawson polyoxoanions. The infrared spectrum fully confirms the X-ray crystal structure and the UV spectrum of the title compound exhibits an absorption peak at 295 nm.
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