The Hydrothermal Synthesis and Crystal Structure of [2.2′-bipyH]3PW12O401

The title compound, [2.2'-bipyH](3)PW12O40, consists of three [2.2'-bipyH](+) and one Keggin structure heteropolyanion [PW12O40](3-), which was hydrothermally synthesized and characterized by elemental analysis, IR spectra and single crystal X-ray diffraction. It belongs to triclinic system, space group P (1) over bar, a = 12.086(3) angstrom, b = 12.777(4) angstrom, c = 19.152(4) angstrom, alpha = 88.861(2) angstrom, beta = 89.851(3) angstrom, gamma = 67.034(3) angstrom, M = 3345.72 g/mol, V = 2722.6(12) angstrom(3), Z = 2, D-c = 4.081 mg/m(3), R-1 = 0.0474, wR(2) = 0.1135, T = 293(2) K. In this compound, each of the three H+ ions locates at between the N atoms in one 2.2'-bipy molecule, respectively. The protonated cations and the heteropolyanion effect each other by the electrostatic force.