Assembly of two ferrous coordination polymers with triazole derivative: Syntheses, structures and magnetic properties

The reactions of Fe(II) salts with 1,4-bis(1,2,4-triazole-1-ylmethyl-benzene) (btx) give two new Fe(II) coordination polymers {[Fe(btx)(3)](ClO4)(2)}(n) (1) and {[Fe(btx)(SO4)(H2O)(2)]}(n) (2), which have been characterized by element analysis, PXRD, single-crystal X-ray diffraction and magnetic susceptibility. 1 shows infinite plait-like chain structure, while 2 exhibits as 2D grid. Magnetic studies indicate that the Fe(II) ions in the two coordination polymers retain in high-spin ground state upon cooling from 300 to 2 K, showing antiferromagnetic interactions. (C) 2010 Elsevier B.V. All rights reserved.