Water-soluble (η6-arene)ruthenium(II)-phosphine complexes and their catalytic activity in the hydrogenation of bicarbonate in aqueous solution

Henrietta Horváth, Gábor Laurenczy, A. Kathó

Research output: Contribution to journalArticle

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Abstract

The reactions of [(η6-C6H6) RuCl2]2 and [(η6-p-cymene) RuCl2]2 with hydrogen in the presence of the water-soluble phosphines tppts (meta-trisulfonated triphenylphosphine) and pta (1,3,5-triaza-7-phosphaadamantane) afforded as the main species [(η6-C6H6)RuH(tppts)2] +, [(η6-C6H6) RuH(pta)2]+, [(η6-p-cymene) RuH(tppts)2]+ and [(η6-p-cymene) RuH(pta)2]+. This latter complex was also formed in the reaction of [(η6-p-cymene)RuCl2(pta)] and hydrogen with a redistribution of pta. In addition, prolonged hydrogenation at elevated temperatures and in the presence of excess of pta led to the formation of the arene-free [RuH(pta)4Cl], [RuH(pta)4(H2O)]+, [RuH2 (pta)4] and [RuH(pta)5]+ complexes. Ru-hydrides, such as [(η6-arene)RuH(L)2] +, catalyzed the hydrogenation of bicarbonate to formate in aqueous solutions at p(H2)=100 bar, T=50-70 °C.

Original languageEnglish
Pages (from-to)1036-1045
Number of pages10
JournalJournal of Organometallic Chemistry
Volume689
Issue number6
DOIs
Publication statusPublished - Mar 15 2004

Fingerprint

phosphine
Hydrogenation
Ruthenium
Bicarbonates
phosphines
ruthenium
hydrogenation
catalytic activity
Catalyst activity
carbonates
aqueous solutions
Hydrogen
formic acid
Water
formates
hydrogen
Hydrides
water
hydrides
Phosphines

Keywords

  • (Arene)ruthenium complexes
  • Carbon dioxide
  • Hydrogenation
  • Water-soluble phosphines

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Organic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Water-soluble (η6-arene)ruthenium(II)-phosphine complexes and their catalytic activity in the hydrogenation of bicarbonate in aqueous solution. / Horváth, Henrietta; Laurenczy, Gábor; Kathó, A.

In: Journal of Organometallic Chemistry, Vol. 689, No. 6, 15.03.2004, p. 1036-1045.

Research output: Contribution to journalArticle

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N2 - The reactions of [(η6-C6H6) RuCl2]2 and [(η6-p-cymene) RuCl2]2 with hydrogen in the presence of the water-soluble phosphines tppts (meta-trisulfonated triphenylphosphine) and pta (1,3,5-triaza-7-phosphaadamantane) afforded as the main species [(η6-C6H6)RuH(tppts)2] +, [(η6-C6H6) RuH(pta)2]+, [(η6-p-cymene) RuH(tppts)2]+ and [(η6-p-cymene) RuH(pta)2]+. This latter complex was also formed in the reaction of [(η6-p-cymene)RuCl2(pta)] and hydrogen with a redistribution of pta. In addition, prolonged hydrogenation at elevated temperatures and in the presence of excess of pta led to the formation of the arene-free [RuH(pta)4Cl], [RuH(pta)4(H2O)]+, [RuH2 (pta)4] and [RuH(pta)5]+ complexes. Ru-hydrides, such as [(η6-arene)RuH(L)2] +, catalyzed the hydrogenation of bicarbonate to formate in aqueous solutions at p(H2)=100 bar, T=50-70 °C.

AB - The reactions of [(η6-C6H6) RuCl2]2 and [(η6-p-cymene) RuCl2]2 with hydrogen in the presence of the water-soluble phosphines tppts (meta-trisulfonated triphenylphosphine) and pta (1,3,5-triaza-7-phosphaadamantane) afforded as the main species [(η6-C6H6)RuH(tppts)2] +, [(η6-C6H6) RuH(pta)2]+, [(η6-p-cymene) RuH(tppts)2]+ and [(η6-p-cymene) RuH(pta)2]+. This latter complex was also formed in the reaction of [(η6-p-cymene)RuCl2(pta)] and hydrogen with a redistribution of pta. In addition, prolonged hydrogenation at elevated temperatures and in the presence of excess of pta led to the formation of the arene-free [RuH(pta)4Cl], [RuH(pta)4(H2O)]+, [RuH2 (pta)4] and [RuH(pta)5]+ complexes. Ru-hydrides, such as [(η6-arene)RuH(L)2] +, catalyzed the hydrogenation of bicarbonate to formate in aqueous solutions at p(H2)=100 bar, T=50-70 °C.

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