1D slide-fastener-like coordination polymers of Mn(II) derived from pyrazine-2,3,5,6-tetracarboxylic acid

作者：Gao Hong Ling; Zhang Yan Ping; Yang Ai Hong; Fang Su Rong; Cui Jian Zhong^*

来源：Journal of Molecular Structure, 2009, 918(1-3): 97-100.

DOI：10.1016/j.molstruc.2008.07.027

• Mn(II) complex
• Pyrazine-2,3,5,6-tetracarboxylic acid
• Crystal structures
• 1D coordination polymers

Two new 1D slide-fastener-like coordination polymers {[Mn(2)(pztc)(phen)(2)(H(2)O)(2)]center dot 4H(2)O}(n) (1) and {[Mn(2)(pztc)(bpy)(2)(H(2)O)(2)]center dot 2H(2)O}n (2) have been synthesized by the reactions of pyrazine-2.3,5,6-tetracarboxylic acid (pztcH(4)) and Mn(OAc)(2)center dot 4H(2)O in the presence of 1,10-phenanthroline (phen) or 2,2'-bipyridine (bpy) under hydrothermal conditions and characterized by elemental analyses, FT-IR, TGA and Xray diffraction. In complex 1 and 2, metal ions are bridged by pyrazine-2,3,5.6-tetracarboxylate, coordinating in a hexadentate manner, so forming I D polymeric chains. The remaining coordination sites of the metal ions are Occupied by one 0 atom of water molecule and two N atoms of the terminal ligand (phen or bpy). IR spectra and thermal analysis data are in agreement with the crystal structure.

• 出版日期2009-1-29
• 单位天津大学