Solvent control in the synthesis of Zn(II) and Cd(II) supramolecular compounds with N,N′-{2,4-di-[(di-pyridin-2-yl)amine]-1,3,5-triazine}ethylenediamine

Four novel supramolecular materials ZnL(NO3)(2) (1), CdL(NO3)(2) (2), Zn3L(NO3)(6)center dot CH3CN (3) and Cd3L(NO3)(6)center dot CH3CN (4) have been prepared by the reaction of Zn(II) and Cd(II) nitrate with the ligand N,N'- (2,4-di-[(di-pyridin-2-yl)amine]-1,3,5-triazine) ethylene-diamine (L) using a solvothermal synthetic procedure under autogenous pressure. The solid-state structure of these coordination compounds has been tuned by the crystallisation solvent. In methanol, the mononuclear materials I and 2 are obtained while in acetonitrile, the trinuclear complexes 3 and 4 are formed. The structures of 1-3 have been elucidated by means of single-crystal diffraction. Complex 4 has been isolated as a microcrystalline powder for which the IR and elemental analyses are in agreement with a trinuclear formulation. (C) 2006 Elsevier Ltd. All rights reserved.