%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){PCyp22-C5H7)}2 (4) has been prepared by reaction of RuH2{PCyp22-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 RuH22-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 RuH22-H2)(CO)(PCyp3)2 (5) was isolated. An excess of tert-butylethylene reacted with 5 to give RuH2(CO){PCyp22-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){PCyp22-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 47, 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