2D and 3D sulfate-water supramolecular networks templated via triazole-nickel(II) complexes

摘要

Tuning the substituents of triazoles, we obtained di- and tri-nuclearic triazole-nickel complexes [Ni-2(deatrz)(4)(H2O)(5)](SO4)(2)center dot 7H(2)O (1) and [Ni-3(dmtrz)(6)(H2O)(6)](SO4)(3)center dot 21H(2)O (2) (deatrz = 3,5-diethanyl-4-amino-1,2,4-triazole; dmtrz = 3,5-dimethanyl-1,2,4-triazole). The X-ray single-crystal diffraction results reveal that sulfate anions and water clusters form supramolecular networks in both complexes. In 1, a supramolecular two-dimensional structure was fabricated by nano-sized grid with novel tetramer water rings templated via binuclear-nickel(II) cations, while in 2, water molecules and sulfate anions construct the first sulfate-water three-dimensional supramolecular network as host to encapsulate trinuclear-nickel guests. (c) 2006 Elsevier B.V. All rights reserved.