| Abstract |
The tetramethylammonium salts (NMe(4))(2)[MO(2)(2,3-Hdhb)(2)]center dot 2H(2)O and (NMe(4))(2)[MO(2)(3,4-Hdhb)(2)]center dot 6H(2)O (M = Mo, W; Hdhb = monoprotonated form of 2,3- or 3,4-dihydroxybenzoic acid, 2,3-H(3)dhb or 3,4-H(3)dhb) were prepared and their crystal structures determined. The structure of [Mg(H(2)O)(6)](NMe(4))(4)-[MoO(2)(3,4-dhb)(3,4-Hdhb)](2)center dot 13H(2)O, obtained by the recrystallization of (NMe(4))(2)[MoO(2)(3,4-Hdhb)(2)] in the presence of magnesium ions, is also reported. The supramolecular interactions of the five structures are discussed in detail concerning the hydrogen bonding patterns involving complexes and water molecules of crystallization. (C) 2009 Elsevier Ltd. All rights reserved. |
