Two Three-Dimensional Metal−Organic Frameworks Containing One-Dimensional Hydroxyl/Carboxylate Mixed Bridged Metal Chains: Syntheses, Crystal Structures, and Magnetic Properties
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- 13 January 2006
- journal article
- Published by American Chemical Society (ACS) in Inorganic Chemistry
- Vol. 45 (4), 1508-1516
- https://doi.org/10.1021/ic050999x
Abstract
Two novel three-dimensional complexes formulated as [M3(bime)2(μ3-OH)2(HO−BDC)2]n (M = Co, 1; Cu, 2) [bime = 1,2-bis(imidazol-1‘-yl)ethane, HO−H2BDC = 5-hydroxyisophthalic acid] have been hydrothermally synthesized and characterized. Both 1 and 2 exhibit similar structural frameworks resulting from one-dimensional metal/oxygen chains extended by HO−BDC, but the bridging modes of HO−BDC and coordination environments of metal centers are different. Complexes 1 and 2 crystallize in the orthorhombic system, space group Pbcn, a = 18.458(2) [18.2119(12) for 2] Å, b = 12.0616(14) [11.6847(7)] Å, c = 11.4859(14) [12.0688(6)] Å, and Z = 4 (4). Magnetic studies show that 1 displays a slow magnetic relaxation, a large hysteresis, and distinct finite-size effects and 2 contains an antiferromagnetic chain.Keywords
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