Abstract
A new polyoxovanadium supramolecular complex, [(N(CH2CH2NH3)3)2(V6O18)]·3H2O (1), was synthesized as a crystalline product from aqueous solution at room temperature. From single crystal X-ray structural analysis, the complex is monoclinic, space group P21/n, with a = 15.878(2) A,b = 11.3309(15) A, c = 19.469(3) A, β = 102.244(2)°, V = 3423.0(8) A3, Z = 4, final R = 0.0469. The crystal structure comprises 1D spiral vanadate chain as the oxide moiety, doubly protonated cations of tris(2-aminoethyl)amine (tren) and three lattice molecules of water. There are numerous H bonds in the structure connecting the polyoxovanadium anion moiety, protonated tren cation and lattice water molecules; the average O...O and N...O distances are 2.753 A for O-H...O and 2.879 A for N-H...O, respectively.
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