Steric-Induced Layer Flection in Templated Vanadium Tellurites

A series of organically templated vanadium tellurites has been prepared under mild hydrothermal conditions. Single crystals were grown from mixtures of NaVO3, Na2TeO3, and either 1,4-diaminobutane, 1,6-diaminohexane, or N,N,N′,N′-tetramethylethylenediamine in H2O. Each compound contains similar [V2Te2O10]n2n– layers. The layer metrics of [1,4-diaminobutaneH2]­[V2Te2O10], [1,6-diaminohexaneH2]­[V2Te2O10], [N,N,N′,N′-tetramethylethylenediamineH2]­[V2Te2O10], and [piperazineH2]­[V2Te2O10] reflect the steric bulk of the respective amines. Topotactic conversions between compounds through amine exchange are possible in reactions in which an increase in the strength of the amine–[V2Te2O10]n2n– hydrogen-bonding network is observed.