Ghosh, Sujit K. ; Bharadwaj, Parimal K. (2005) Infinite chains of quasi-planar hexameric water clusters stabilized in a metal-organic framework built from CoII and pyrazine- 2,3,5,6-tetracarboxylic acid European Journal of Inorganic Chemistry, 2005 (24). pp. 4880-4885. ISSN 1434-1948
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/ejic.20...
Related URL: http://dx.doi.org/10.1002/ejic.200500670
Abstract
Pyrazine-2,3,5,6-tetracarboxylic acid (ptcH4) reacts with Co(NO3)2·6H2O in 1:2 molar ratio in aqueous pyridine (py) at room temperature to form a coordination polymer with the empirical formula, {[Co2(ptc)·(py)2·4H2O]·4H2O}n, (1). The structure consists of 2D sheets of metal-organic frameworks and infinite chains of cyclic water hexamers that join these sheets to form an overall 3D structure. Thermogravimetry, X-ray powder diffraction and X-ray structural analysis have been used in addition to infrared spectroscopy and elemental analysis to characterize 1. Crystal data for 1: monoclinic space group P21, a = 7.153(4), b = 17.003(2), c = 11.060(5) Å, β = 107.207(5)°, V = 1284.9(11) Å3, Z = 2, R1 = 0.0340, wR2 = 0.0875, S = 1.028. This structure demonstrates a new mode of association of water molecules.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons, Inc. |
| Keywords: | Water Cluster; Supramolecular Chemistry; Self Assembly; Organic-inorganic Hybrid Composite |
| ID Code: | 4612 |
| Deposited On: | 18 Oct 2010 07:21 |
| Last Modified: | 18 May 2011 08:13 |
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