Decavanadates with [Et3NH]+ and [Me2HN(CH2)2NHMe2]2+: Variation in protonation state and self-assembly

Syntheses, characterization and crystal structures of [Et3NH]4[V10O26(OH)2] (1) and [Me2HN(CH2)2NHMe2]3[V10O28] · 4H2O (2) are described. In the crystalline state, 1 forms dimeric aggregates via interanionic O-H···O hydrogen bonds, whereas a three-dimensional network of 2 is formed through intermolecular N-H···O and O-H···O hydrogen bonds.