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A new copper(II) coordination polymer [Cu 2 (C 5 H 4 NCOO) 2 (C 7 H 5 N 4 ) 2 ]  n   ( 1 ) has been synthesized with 4-pyridinecarboxylate and 3-(pyridin-2-yl)-1,2,4-triazolyl ligands. The crystal structure shows that two neighboring copper(II) ions are coordinated with two deprotonated (anionic) 3-(pyridin-2-yl)-1,2,4-triazole ligands to form a binuclear structure. Adjacent binuclear units are linked by 4-pyridinecarboxylate anions to form a three-dimensional network structure. The magnetic, fluorescent, and electrochemical properties and thermal stability of  1  were studied. The results show that  1  exhibits antiferromagnetic interaction, and upon excitation at 318 nm, it has an intense fluorescent emission at approximately 430 nm. The electron transfer of  1  is irreversible in electrode reactions. The thermogravimetric analysis shows that  1  is stable below 240 °C.

zeitschrift für naturforschung b

Crystal structure, magnetic, fluorescent, electrochemical properties and thermal stability of a new copper(II) coordination polymer [Cu 2 (C 5 H 4 NCOO) 2 (C 7 H 5 N 4 ) 2 ]  n