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

The X-ray structural characterization of tritylphosphonic acid, Ph3CPO3H2 (), 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 under so...

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Published inDalton transactions : an international journal of inorganic chemistry no. 45; pp. 6475 - 6480
Main Authors Chandrasekhar, Vadapalli, Sasikumar, Palani
Format Journal Article
LanguageEnglish
Published England 07.12.2008
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Summary:The X-ray structural characterization of tritylphosphonic acid, Ph3CPO3H2 (), 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 under solvothermal conditions afforded a molecular dinuclear Ce(III) phosphonate, [Ce2{Ph3CPO2(OEt)}4(NO3)2(H2O)4] (). The molecular structure of 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. is found to be a good catalyst for the three-component Biginelli reaction.
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ISSN:1477-9226
1477-9234
DOI:10.1039/b807801g