%0 Generic
%A Bolton, Paul D.
%A Grellier, Mary
%A Vautravers, Nicolas
%A Vendier, Laure
%A Sabo-Etienne, Sylviane
%D 2008
%T Access to Ruthenium(0) Carbonyl Complexes via Dehydrogenation of a Tricyclopentylphosphine Ligand and Decarbonylation of Alcohols
%U https://acs.figshare.com/articles/dataset/Access_to_Ruthenium_0_Carbonyl_Complexes_via_Dehydrogenation_of_a_Tricyclopentylphosphine_Ligand_and_Decarbonylation_of_Alcohols/2908243
%R 10.1021/om8005118.s002
%2 https://acs.figshare.com/ndownloader/files/4606447
%K Ru
%K cyclopentyl
%K RuH
%K ethanol
%K 2 equiv
%K Decarbonylation
%K dihydrogen ligand
%K CO
%K NMR
%K dehydrogenation
%K IR
%X The carbonylruthenium(0) complex Ru(CO){PCyp2(η2-C5H7)}2 (4) has been prepared by reaction of RuH2{PCyp2(η2-C5H7)}2 (3) with an excess of tert-butylethylene in the presence of ethanol. Decarbonylation of ethanol is also observed when reacting the bis(dihydrogen) complex RuH2(η2-H2)2(PCyp3)2 (1) with 2 equiv of ethanol. The reaction results formally in the substitution of one dihydrogen ligand by a carbonyl, and the corresponding complex RuH2(η2-H2)(CO)(PCyp3)2 (5) was isolated. An excess of tert-butylethylene reacted with 5 to give RuH2(CO){PCyp2(η2-C5H7)}(PCyp3) (6), which corresponds to the formal loss of 2 equiv of dihydrogen: loss of the dihydrogen ligand and dehydrogenation of one cyclopentyl ring. The dihydride 6 can be dehydrogenated further by reaction with ethylene, affording the ruthenium(0) complex Ru(η2-C2H4)(CO){PCyp2(η2-C5H7)}(PCyp3) (7). Finally, the dicarbonyl complex RuH2(CO)2(PCyp3)2 (8) was isolated by exposing 1 to 3 bar of CO. 8 and the new complexes 4−7, resulting from partial dehydrogenation of one or two cyclopentyl rings of the tricyclopentylphosphines and/or decarbonylation of alcohol, were characterized by multinuclear NMR, IR, elemental analysis, and X-ray diffraction.
%I ACS Publications