Ghosh, Sujit K. ; Ribas, Joan ; El Fallah, M. Salah ; Bharadwaj, Parimal K. (2005) Mn(II) staircase structures stitched by water clusters to a 3D metal-organic open framework: X-ray structural and magnetic studies Inorganic Chemistry, 44 (11). pp. 3856-3862. ISSN 0020-1669
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Official URL: http://pubs.acs.org/doi/abs/10.1021/ic050102w
Related URL: http://dx.doi.org/10.1021/ic050102w
Abstract
4-Hydroxypyridine-2,6-dicarboxylic acid (chelidamic acid, cdaH2) reacts with Mn(OAc)2·4H2O to form a 1D staircase structure with dimeric Mn(II) units connected by water clusters to form a 3D framework, {[Mn2(cda)2·4H2O]·4H2O}n, 1, in aqueous pyridine at room temperature. The compound crystallizes in the triclinic space group P with a = 9.495(3), b =10.733(5), c = 11.065(4) Å, α = 87.42(5), β = 74.14(5), γ = 80.07(2)° , U = 1068.5(9) Å3, Z = 2, ρcalcd = 1.915 g cm-3, T = 100 K, μ = 1.28 mm-1, R1 = 0.0453 (I > 2σ(I)), wR2 = 0.1046, GOOF = 1.282. Upon removal of the water molecules by heating, the 3D structure breaks down. Thermogravimetric analysis, infrared, X-ray powder diffraction studies, and X-ray crystallography were performed to characterize this compound. Since the coordination polymer has diaqua-bridged Mn(II) centers, it was subjected to variable-temperature magnetic studies.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 4833 |
| Deposited On: | 18 Oct 2010 06:34 |
| Last Modified: | 18 May 2011 08:15 |
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