1033128-99-2Relevant academic research and scientific papers
Acceptorless, intramolecular, alkyl dehydrogenation in the solid-state in a rhodium phosphine complex; reversible uptake of three equivalents of H 2 per molecule
Douglas, Thomas M.,Weller, Andrew S.
, p. 966 - 969 (2008)
Addition of H2 to the phosphine alkene ligated complex [Rh(dppe)(PCyp2Cyp′)][BArF4] 1 (Cyp = cyclo-C5H 9; Cyp′ = cyclo-C5H7, ArF = 3,5-(CF3)2C6H3) in the solid state results in hydrogenation of the alkene and uptake of two further equivalents of H2 to afford the dihydride-dihydrogen complex [Rh(dppe)(PCyp 3)(H)2(η2-H2)][BArF4] 2. Placing 2 under a vacuum or argon results in sequential loss of H2 and dehydrogenation of one of the cyclopentyl rings to reform 1. The hydrogenation-dehydrogenation cycle has been repeated 5 times without apparent degradation and has been followed by solid-state 31P{1H} NMR spectroscopy. Intermediates on this process have been trapped using acetonitrile to give stable complexes that have been characterised in solution. We have previously shown that this hydrogenation-dehydrogenation process also happens in the solution-state; and evidence is presented that shows that, apart from a subtle difference, the same overall transformation occurs in the solid-state. The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.
