Search

In this work a flexible multi-dentate 1-(4-aminobenzyl)-1,2,4-triazole (abtz) ligand has been employed, two novel triazole-Cu(II) coordination polymers {[Cu(abtz) 2 (Br) 2 ]·(H 2 O) 2 } n ( 1 ) and {[Cu(abtz) 2 ]·(SiF 6 )·(H 2 O) 2 } n ( 2 ) have been isolated under solvo-thermal conditions. 1 is a 2D neutral Cu II coordination polymer while 2 is 2D cation micro-porous Cu II coordination polymer with the channel dimensionalities of 11.852(1) Å × 11.852(1) Å (metal-metal distances). Variable-temperature magnetic susceptibility data of 1 and 2 have been recorded in the 2–300 K temperature range indicating weak anti-ferromagnetic interactions. Further absorption properties of anion pollutants for 2 also have been investigated. 2 presents the novel example of cationic triazole-copper(II) coordination framework for effectively capturing anion pollutants Cr 2 O 7 2− in the water solutions and selectively capturing Congo Red in the methanol solutions. [ABSTRACT FROM AUTHOR]