Journal
INORGANICA CHIMICA ACTA
Volume 363, Issue 4, Pages 645-652Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2009.11.019
Keywords
Metal-organic framework; Carboxylate ligands; Magnetic property; Nickel; Manganese; Cobalt
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Funding
- National Natural Science Foundation of China [20771008, 2073116003, 20821091]
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Three compounds, [(CH3)(2)NH2][M-3(BTC)(HCOO)(4)(H2O)]center dot H2O (M = Mn (1), Co (2), Ni (3), H3BTC = 1,3,5-benzenetricarboxylic acid), were synthesized under hydrothermal conditions and were characterized by single crystal and powder X-ray diffraction, IR spectra, elemental analysis, coupled TG-MS and magnetic measurements. Compounds 1-3 are isostructural analogues and crystallize in monoclinic space group P2(1)/c. Each metal ion in these compounds connects to six oxygen atoms to form a MO6 octahedron. Six MO6 octahedra link to each other to form a corner-shared hexameric M-6 cluster, which is linked by BTC ligands to form two-dimensional layers. The two-dimensional layers are further connected by formic ions to form a three-dimensional network with channels, where (CH3)(2)NH2+ ions and water molecular are located. Magnetic measurements indicate that anti-ferromagnetic ordering occurs at low temperature for these compounds. (C) 2009 Elsevier B. V. All rights reserved.
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