A 3D porous cobalt-organic framework exhibiting spin-canted antiferromagnetism and field-induced spin-flop transition

You Gui Huang, Da Qiang Yuan, Long Pan, Fei Long Jiang, Ming Yan Wu, Xu Dong Zhang, Wei Wei, Qiang Gao, Yong Lee Jeong, Jing Li, Mao Chun Hong

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94 Citations (Scopus)

Abstract

Two 3D cobalt-organic frameworks formulated as [Co3(2,4-pydc) 23-OH)2]n·5nH 2O (1) and [Co3(2,4-pydc)23-OH) 2(H2O)]n·7nH2O (2) (2,4-pydc = pyridine-2,4-dicarboxylate) have been hydrothermally synthesized and characterized. Both compounds 1 and 2 exhibit the 3D porous frameworks with hydroxyl-bridged metal Δ-chains. However, in comparison with only two crystallographically independent CoII ions in a unit of 2, three crystallographically independent CoII ions are found in an asymmetric unit of 1, where their Δ-chains are constructed by two types of Vertexes sharing quadrangles formed via edge-sharing triangles. Magnetic studies show that 1 exhibits spin-canted antiferomagnetism and a field-induced spin-flop transition while 2 behaves as a normal antiferromagnet. The magnetic properties are largely retained by the porous frameworks of dehydrated 1 and 2 compounds. Gas adsorption measurements indicate that both the dehydrated compounds absorb H2 into their pores.

Original languageEnglish
Pages (from-to)9609-9615
Number of pages7
JournalInorganic Chemistry
Volume46
Issue number23
DOIs
Publication statusPublished - Nov 12 2007

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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    Huang, Y. G., Yuan, D. Q., Pan, L., Jiang, F. L., Wu, M. Y., Zhang, X. D., Wei, W., Gao, Q., Jeong, Y. L., Li, J., & Hong, M. C. (2007). A 3D porous cobalt-organic framework exhibiting spin-canted antiferromagnetism and field-induced spin-flop transition. Inorganic Chemistry, 46(23), 9609-9615. https://doi.org/10.1021/ic700559z