A new metal organic framework constructed of Co(II) ions six and seven-coordinated: Synthesis, structure and magnetism
authors Pedro, SS; Brandao, P; Shi, FN; Tedesco, JCG; Reis, MS
nationality International
journal POLYHEDRON
author keywords Cobalt(II); 2,2 '-Biimidazole; 3D structure; Metal-organic framework; Antiferromagnetic
keywords CRYSTAL-STRUCTURES; COMPLEXES; LIGAND; COORDINATION; CHLORIDE; POLYMER; NETS
abstract In this work are presented the synthesis, structure and magnetic measurements for the [Co(mu(2)-biim)(6) 2Co(mu-H2O)(OH)(6)] (biim = 2,2'-biimidazole) metal-organic framework. The compound crystallizes in the cubic system, space group Pa (3) over bar (a = 16.0312(6) angstrom, V = 4120.0(3) angstrom(3) and Z = 4), containing two crystallo-graphically distinct divalent cobalt ions Co(1) and Co(2) six- and seven-coordinated, respectively. The two metal centers are linked by 2,2'-biimidazole bridging ligand through the N(6) nitrogen donor and Co(2) forming a dimer via bridged water molecule with Co-Co distance of 4.313(3) angstrom, originating a 3D structure. Topological analysis of this compound revealed that the structure is an abi-nodal 3,4-connected network with total point symbol {8(3)}{8(6)}. By fitting of susceptibility data to the Curie-Weiss law it was possible to estimate the magnetic parameters theta(p) and p(eff). Magnetic susceptibility results suggest an antiferromagnetic order in the system. (C) 2014 Elsevier Ltd. All rights reserved.
publisher PERGAMON-ELSEVIER SCIENCE LTD
issn 0277-5387
year published 2014
volume 81
beginning page 210
ending page 215
digital object identifier (doi) 10.1016/j.poly.2014.06.018
web of science category Chemistry, Inorganic & Nuclear; Crystallography
subject category Chemistry; Crystallography
unique article identifier WOS:000343339600027
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journal impact factor 2.067
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