Aqueous organometallic catalysis. Isotope exchange reactions in H 2-D2O and D2-H2O systems catalyzed by water-soluble Rh- and Ru-phosphine complexes

Gábor Kovács, Levente Nádasdi, Gábor Laurenczy, Ferenc Joó

Research output: Article

48 Citations (Scopus)

Abstract

The water-soluble complexes [{RuCl2(mTPPMS)2} 2], [RuCl2(PTA)4], [RhCl(mTPPMS)3], [RhCl(mTPPTS)3], and [RhCl(PTA)3] (mTPPMS = sodium salt of meta-sulfonatophenyl-diphenylphosphine, mTPPTS = sodium salt of tris(meta-sulfonatophenyl)phosphine, and PTA = 1,3,5-triaza-7-phosphaadamantane) showed high catalytic activity (up to 1252 h-1) in the H-D isotope exchange reactions between H2 and D2O or D2 and H2O. The reactions took place at 20-70°C, 0.1-2 MPa H 2, and were strongly influenced by the pH. In the hydrogenation (with H2) of unsaturated acids in D2O, the relative rates of H-D exchange, hydrogenation and deuteration were determined by the individual substrates and catalysts: in the reaction of maleic acid catalyzed by [RhCl(mTPPMS)3] only hydrogenation took place with no deuteration and H-D exchange, whereas a similar reaction of itaconic acid was accompanied by a fast H-D exchange and the product methylsuccinic acid was highly deuterated.

Original languageEnglish
Pages (from-to)213-217
Number of pages5
JournalGreen Chemistry
Volume5
Issue number2
DOIs
Publication statusPublished - ápr. 2003

ASJC Scopus subject areas

  • Environmental Chemistry
  • Pollution

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