銅、鋅、鎘金屬離子與含 Tetrazole 配子之自組裝合成、性質鑑定之研究

Abstract

The aim of this study was to develop a self-assembly strategy for the preparation of metal-organic supramolecules and coordination polymers. Reaction of Zn(NO3)2•6H2O with 4-(1H-tetrazo-5-yl)benzoic acid under hydrothermal conditions produced a 3D polymer [Zn2(C8H4N4O2)2]n (1). Treatment of Cd(NO3)2•4H2O with 4-(1H-tetrazo-5-yl)benzoic acid at ambient temperature or under hydrothermal conditions yielded a 3D polymer [Cd(C8H4N4O2)(H2O)]n (2). The reaction of CdCl2•2.5H2O with 5-pyrazinetetrazole under hydrothermal conditions produced a 2D polymer [Cd3(C5H3N6)2Cl4(H2O)2]n (3), and a discrete molecule [Cd(C5H3N6)2(H2O)2] (4). In contrast, the reaction of 5-pyrazinetetrazole with CuCl2•2H2O or Zn(NO3)2•6H2O under hydrothermal conditions led to the formation of discrete molecules [Cu(C5H3N6)2(H2O)2]•H2O (5) and [Zn(C5H3N6)2(H2O)2] (6), respectively. Compounds 1-6 were characterized with the aid of elemental analysis, IR, and UV-visible spectroscopic studies, thermal analysis (TGA) and X-ray powder diffraction studies. The molecular structures of the products 1-6 were determined by single-crystal X-ray diffraction analysis.