Water-soluble Organometallic compounds. 2. Catalytic hydrogenation of Aldehydes and olefins by New water-Soluble 1,3,5-Triaza-7-phosphaadamantane Complexes of Ruthenium and Rhodium

Donald J. Darensbourg, Ferenc Joo, Michael Kannisto, Agnes Katho, Joseph H. Relbensples

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Water-soluble phosphine complexes of ruthenium (II) and rhodium(I) have been prepared by the reduction of RuCl3 and RhCl3 in ethanol in the presence of the air-stable phosphine 1,3,5-triaza-7-phosphaadamantane (1). The complex RuCl2(PTA)4 (2a) and its protonated analog RuCl2(PTA)4-2HCl (2b) have been characterized by X-ray crystallography. Similarly, the cis-bis-(phosphine) complex RhCl(PTA)2-2HCl, derived from the protonation of RhCl(PTA)3 by HCl, has been characterized by X-ray crystallography. The water-soluble ruthenium phosphine derivative 2a is catalytically quite active for the conversion of unsaturated aldehydes to unsaturated alcohols using a biphaslc aqueous/organic medium with formate as the source of hydrogen. By way of contrast, under similar conditions RhCl(PTA)3 is a very active catalyst for olefin hydrogenation.

Original languageEnglish
Pages (from-to)1990-1993
Number of pages4
Issue number6
Publication statusPublished - Jun 1 1992


ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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