Chandrasekhar, Vadapalli ; Sasikumar, Palani (2008) First example of a molecular Ce(III) phosphonate: synthesis, structural characterization and catalytic activity of [Ce2{Ph3CPO2(OEt)}4(NO3)2(H2O)4], structural diversity of Ph3CPO3H2 Dalton Transactions . 6475 - 6480. ISSN 1477-9226
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Official URL: http://www.rsc.org/Publishing/Journals/DT/article....
Related URL: http://dx.doi.org/10.1039/b807801g
Abstract
The X-ray structural characterization of tritylphosphonic acid, Ph3CPO3H2 ( 1), reveals that it possesses three different structural forms (a hexameric cage, a two-dimensional polymeric sheet and a dimer) depending upon the solvent used for crystallization. The reaction of cerium nitrate with 1 under solvothermal conditions afforded a molecular dinuclear Ce(III) phosphonate, [Ce2{Ph3CPO2(OEt)}4(NO3)2(H2O)4] ( 2). The molecular structure of 2 reveals that the two cerium atoms are held together by two isobidentate phosphonate and nitrate ligands. The cerium atoms are enveloped by a 8 O coordination environment in a distorted dodecahedral geometry. 2 is found to be a good catalyst for the three-component Biginelli reaction.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Royal Society of Chemistry. |
| ID Code: | 9015 |
| Deposited On: | 29 Oct 2010 12:00 |
| Last Modified: | 29 Oct 2010 12:00 |
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