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http://hdl.handle.net/10773/19753
Título: | A new metal organic framework constructed of Co(II) ions six and seven-coordinated: Synthesis, structure and magnetism |
Autor: | Pedro, S. S. Brandao, P. Shi, F. -N. Tedesco, J. C. G. Reis, M. S. |
Palavras-chave: | CRYSTAL-STRUCTURES COMPLEXES LIGAND COORDINATION CHLORIDE POLYMER NETS |
Data: | 2014 |
Editora: | PERGAMON-ELSEVIER SCIENCE LTD |
Resumo: | 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. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/19753 |
DOI: | 10.1016/j.poly.2014.06.018 |
ISSN: | 0277-5387 |
Versão do Editor: | 10.1016/j.poly.2014.06.018 |
Aparece nas coleções: | CICECO - Artigos |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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A new metal organic framework constructed of Co(II) ions six and seven-coordinated Synthesis structure and magnetism_10.1016j.poly.2014.06.018.pdf | 1.19 MB | Adobe PDF |
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