60663-27-6Relevant academic research and scientific papers
Nucleophilic attack on η3-allyl and η 2-tetrahydroborate complexes of ruthenium(II)
Chamberlain, Barbara,Duckett, Simon B.,Lowe, John P.,Mawby, Roger J.,Stott, J. Claire
, p. 2603 - 2614 (2007/10/03)
Reaction of [Ru(CO)(η3-C3H 5)Cl(PMe2Ph)2], 1, with CO and Ag+ yielded 2A and 2B, isomers of [Ru(CO)2-(η3-C 3H5)(PMe2Ph)2]+. Treatment of 2B with BH4- gave [Ru(CO)2(CH 2CH2CH2)(PMe2Ph)2], 7, and [Ru(η2-BH4)-(CO)H(PMe2Ph)2], 6, subsequently obtained from [Ru2(CO)2Cl 4(PMe2Ph)4] and NaBH4. Chloride attacked the metal in 2B, yielding [Ru(CO)2(η1-C 3H5)Cl(PMe2Ph)2], 8, which then reformed 1. Lability of the Ru-HB bond trans to hydride allowed nucleophilic access to the metal in 6, with low-temperature formation of [Ru(η 1-BH4)(CO)-H(L)(PMe2Ph)2] (11, 12, 13, L = PMe2Ph, CO, 4-methylpyridine, respectively). On warming with excess L, these gave H3B·L and [Ru(CO)(H) 2L(PMe2Ph)2] (5, 4, 14, respectively). For L = C2H4, low-temperature NMR studies revealed a rapid equilibrium between 6, C2H4 and [Ru(η 1-BH4)(CO)(η2-C2H 4)H(PMe2Ph)2], 16, with slower conversion to [Ru(η2-BH4)(CO)Et(PMe2Ph)2], 17. The Royal Society of Chemistry 2003.
PREPARATION, MECHANISM OF FORMATION, STRUCTURE, AND REACTIONS OF η-ALLYL COMPLEXES OF RUTHENIUM(II)
Barnard, Christopher F. J.,Daniels, J. Anthony,Holland, Philip R.,Mawby, Roger J.
, p. 2418 - 2424 (2007/10/02)
Reaction of either of two isomers of or either of two isomers of 2> with SnBu3(C3H5) yields a single isomer of .A mechanism involving the intermediate formation of the five-co-ordinate species and is proposed for the reactions.Treatment of complexes 2> (L = phosphorus or arsenic ligand) with SnBu3(C3H5) yields the related complexes , and the method can be extended to the preparation of 1-methylallyl and 2-methylallyl complexes.Simulation of the complex (1)H n.m.r. spectra of and its AsMe2Ph analogue provides detailed information about the coupling between the protons in the allyl ligand.Treatment of with excess of PMe2Ph results in the formation of , which is very slowly converted in solution into : the key intermediate in the system appears to be .
