Complex (Hp2w18o62)(C6h6no2)(5)Center Dot 2h(2)O Via In-Situ Decarboxylation: Crystal Structure, Spectroscopy And Electrochemistry

Heteropolyacid complex (HP2W18O62)(C6H6NO2)5(center dot)2H(2)O (1) with 2-picolinic acid in deionized water has been synthesized and characterized by IR. UV, cyclic voltammetry (CV) and X-ray single-crystal diffraction methods. The 2-picolinic acid was obtained by decarboxylation of pyridine-2,6-dicarboxylicacid (H(2)PDA). The results show that the crystal of the complex 1 belongs to monoclinic system, space group P2(1)/n with: a=1.553 3(2) nm, b=2.006 3(3) nm, c=2.759 9(4) nm, beta=103.981(2)degrees, Z=4, F(000)=8816. Intermolecular hydrogen-bond and weak interactions from polyanions and 2-picolinic acid lead the complex to a 3D supramolecular architecture. CV study reveals that compound 1 exhibits four chemical processes. CCDC: 905785.