96503-27-4Relevant articles and documents
Terminal Phosphido Complexes of the Ru(n5-Cp?) Fragment
Yang, Jin,Langis-Barsetti, Sophie,Parkin, Hayley C.,McDonald, Robert,Rosenberg, Lisa
supporting information, (2019/09/12)
In situ generation of the five-coordinate complex Ru(n5-Cp?)(PR2)(PPh3) (2), via dehydrohalogenation of Ru(n5-Cp?)Cl(PR2H)(PPh3), has allowed its reactivity toward a range of small molecules to be compared with that of its well-studied analogue Ru(n5-indenyl)(PR2)(PPh3) (1), in a study designed to assess the likelihood of variable hapticity in the chemistry of complex 1. Reactions of 2 with hydrogen, carbon monoxide, phenylacetylene, ethylene, acrylonitrile, and 1-hexene demonstrate enhanced nucleophilicity/basicity of the terminal phosphido ligand in 2 relative to that in complex 1. Complex 2 also exhibits greater lability of the PPh3 ligand, leading to substitutional product mixtures that were not observed for 1. Both of these features are consistent with the more electron-rich and sterically imposing nature of the Cp? ligand in 2 relative to the indenyl ligand in 1. Nevertheless, the fundamental transformations of the phosphido ligand are comparable for the two complexes. This suggests that variable hapticity does not play a role in reactions of indenyl complex 1, since n5-n3 shifts are unlikely to occur for Cp? complex 2. The implications of these reactivity studies for the design of highly active, yet stable, ruthenium half-sandwich catalysts for hydrophosphination are discussed.
SYNTHESIS AND SOME REACTIONS OF DICHLORO(PENTAMETHYLCYCLOPENTADIENYL)RUTHENIUM(III) OLIGOMER
Oshima, Noriaki,Suzuki, Hiroharu,Moro-Oka, Yoshihiko
, p. 1161 - 1164 (2007/10/02)
Paramagnetic ruthenium(III) complex, n, is prepared by the reaction of RuCl3*H2O with C5Me5H in refluxing ethanol.Treatment of n (Cp* = C5Me5) with cyclic dienes or α,ω-bis(diphenylphosphino)alkanes gives diamagnetic Ru(II) complex
