Repercussion of a 1,3-Hydrogen Shift in a Hydride-Osmium-Allenylidene Complex.

ABSTRACT: An unusual 1,3-hydrogen shift from the metal center to the C_β atom of the C₃-chain of the allenylidene ligand in a hydride-osmium(II)-allenylidene complex is the beginning of several interesting transformations in the cumulene. The hydride-osmium(II)-allenylidene complex was prepared in two steps, starting from the tetrahydride dimer [(Os(H···H){κ³-P,O,P-[xant(P ⁱ Pr₂)₂]})₂(μ-Cl)₂][BF₄]₂ (1). Complex 1 reacts with 1,1-diphenyl-2-propyn-1-ol to give the hydride-osmium(II)-alkenylcarbyne [OsHCl(≡CCH=CPh₂){κ³-P,O,P-[xant(P ⁱ Pr₂)₂]}]BF₄ (2), wh

SUBMITTER: Esteruelas MA 

PROVIDER: S-EPMC9180373 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature