Fazlur-Rahman, A. K.; Bennett, Martin A. published the artcile< Activation of carbon-carbon bonds in d9 (Co, Rh, Ir) and d8 (Ru) metal coordinated bicyclo[3.2.1]octa-2,6-diene via agostic M-H-C and M-H interactions>, Formula: C24H36Cl4Ru2, the main research area is bicyclooctadiene Group 9 element ruthenium complex preparation protonation rearrangement; crystal mol structure bicyclooctadiene Group 9 element ruthenium complex.
This contribution reveals the first synthesis, protonation reactions and skeletal rearrangements of a series of Group 9 element complexes [M(η5-C5R5)(bcod)] (bcod = η2:η2-bicyclo[3.2.1]octa-2,6-diene; M = Co, Rh, Ir; R = H, Me) (1-3) and ruthenium complexes [Ru(η6-arene)(bcod)] (4, arene = C6Me6, C6Me4H2, C6H3Me3). Monoprotonation of these coordinated bcod complexes, 1, 3, 4 with super acids such as HPF6 (60% aqueous), HBF4·Et2O or CF3SO3H at low temperature (-80° to -20°) forms agostic M-H-C structures for [Rh(μ-H)(η5-C5R5)(η2:η2-2,6-bcod)]+ (5), [CpCo(μ-H)(η2:η2-bcod)]+ (6) and [Ru(μ-H)(η6-arene)(η2:η2-bcod)]+ (7). Similar reactions of iridium complexes 2a,b gave terminal hydride complexes [Cp*Ir(H)(η2:η2-bcod)][PF6] (8a,b) as isolable salts at room temperature Initial products of all these monoprotonated cationic salts 5-8, undergo isomerization via hydride migration and subsequent cleavage of carbon-carbon bonds to the corresponding η2-vinyl η3-cyclohexenyl cations (9-12), independent of the non-coordinating anions. All metal coordinated η2-vinyl, η3-cyclohexenyl cations were isolated and characterized by 1H and 13C NMR spectroscopic methods. The structure of 9b was solved by x-ray crystallog. anal. Nucleophilic addition of H- to the [Ru(η6-C6Me6)(η2-vinyl-η3-cyclohexenyl)]PF6 cation (12c) resulted in the formation of 5-ethyl-η4-1,3-cyclohexadiene complex (14c) as the isomerized product.
Journal of Organometallic Chemistry published new progress about Agostic bond. 67421-02-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C24H36Cl4Ru2, Formula: C24H36Cl4Ru2.
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics