|
|||||
|
|
Water-soluble (η-arene)ruthenium(II)-phosphine complexes and their catalytic activity in the hydrogenation of bicarbonate in aqueous solution |
|
| Authors: | Henrietta Horváth Ágnes Kathó |
| Institution: | a Institute of Physical Chemistry, University of Debrecen, P.O. Box 7, Debrecen-10 H-4010, Hungary b Institut de Chimie Moléculaire et Biologique, Ecole Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland c Research Group of Homogeneous Catalysis, Hungarian Academy of Sciences, P.O. Box 7, Debrecen 10 H-4010, Hungary |
| 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. |
| Keywords: | (Arene)ruthenium complexes Carbon dioxide Hydrogenation Water-soluble phosphines |
| 本文献已被 ScienceDirect 等数据库收录！ | |