Hydrothermal crystallization and X-ray structure determination of a new decavanadate with mixed cations [Mn(H2O)(6)](2)[N(CH3)(4)](2)[V10O28]center dot 2H(2)O

A new decavanadate with mixed cations, [Mn(H2O)(6)](2)[N(CH3)(4)](2)[V10O28 ]. 2H(2)O (1), was crystallized from a hydrothermal reaction between MnCO3 and V2O5 in the presence of N(CH3)(4)Br at 100 degrees C. The structure of 1, as determined by x-ray single crystal analysis, consists of cations and anions of hexa-aqua manganese [Mn(H2O)(6)](2+), tetramethyl ammonium [N(CH3 )(4)](+) and decavanadate [V10O28](6-) The extended H-bonding between the [ Mn(H2O)(6)](2+) and [V10O28](6-) ions gives rise to a pseudo- two-dimension al network in the crystal lattice xray crystallographic data for 1: monocli nic P2(1)/n, a = 9.1499(5), b = 12.8725(7), c = 18.625(1) Angstrom, beta = 92.252(1)degrees, V = 2192.0(2) Angstrom(3), MZ = 2, and D-calcd = 2.22 g c m(-3).