Journal
CRYSTAL GROWTH & DESIGN
Volume 9, Issue 10, Pages 4239-4242Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cg9005696
Keywords
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Funding
- NSFC [20871034]
- NSFGX [00832001Z]
- Program for New Century Excellent Talents [NCET-07-217]
- Project of Ten, Hundred, Thousand Distinguished Talents [2006201]
- Fok Ying Tung Education Foundation [111014]
- Tianjin Normal University
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Two related Coll 5-aminoisophthalate coordination frameworks [Co-5(mu(3)-OH)(2)(5-NH2-bdc)(4)(H2O)(2)]center dot 7.5H(2)O (1, 5-NH2-bdc = 5-aminoisophthalate) and [Co-5(mu(3)-OH)(2)(5-NH2-bdc)(4)(bpy)(0.5)(H2O)]center dot 3H(2)O (2, bpy = 4,4'-bipyridine) based on [Co-5(mu(3)-OH)(2)] clusters have been synthesized by hydrothermal reaction, structurally described, as well as properties characterized, that have unusual 3D networks with high connectivity (3,12) and (3,13)-connccted, respectively. Notably, the unique (3,13)-connected framework is constructed from the (3,12)-connected network analogue and 4,4'-bipyridyl spacer. Magnetic studies show that a dominant antiferromagnetic coupling between Co(II) ions, and the generation of relatively effective noncompensated moments at very low temperature, mainly arises from the cooperative magnetic effect of the intercluster arrangement in the T-d-S-P-3O(h) mixed-geometry-based pentamer.
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