Decavanadates with [Et < inf > 3 < /inf > NH] < sup > + < /sup > and [Me < inf > 2 < /inf > HN(CH < inf > 2 < /inf > ) < inf > 2 < /inf > NHMe < inf > 2 < /inf > ] < sup > 2+ < /sup > : Variation in protonation state and self-assembly

Abstract

Synthesis, thermal behaviour and crystal structures of [Et3NH]4[V10O26(OH)2] (1) and [Me2HN(CH2)2NHMe2]3[V10O28] · 4H2O (2) are reported. In the crystal lattice of 1, the anions form discrete dimers via O-H···O hydrogen bonds and the cations are connected to the respective anions through N-H···O hydrogen bonds. On the other hand, 2 forms a complex three-dimensional network due to involvement of the cations, the anions and the lattice water in O-H···O and N-H···O hydrogen bonds. © 2008 Elsevier Ltd. All rights reserved.