A NEW POLYOXOVANADIUM SUPRAMOLECULAR COMPLEX [(N(CH2CH2NH3)3)2(V6O18)]·3H2O: SYNTHESIS, STRUCTURE, AND THERMAL PROPERTIES
J. Li1, Y.H. Xing2, M.F. Ge3, C.G. Wang4, Z.P. Li5, S.Y. Niu6
1 Liaoning Normal University
2 Liaoning Normal University, yhxing2000@yahoo.com
3 Chinese Academy of Sciences
4 Liaoning Normal University
5 Liaoning Normal University
6 Liaoning Normal University
Ключевые слова: polyoxovanadate complex, hydrogen bonds, tris(2-aminoethyl)amine, tren, crystal structure
Страницы: 553-559
Аннотация
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), b = 11.3309(15), c = 19.469(3) Å, β = 102.244(2)°, V = 3423.0(8) Å3, 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 Å for O-H…O and 2.879 Å for N-H…O, respectively.
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