Activation of alkynes by {[Cp∗Ru(CO)(PMeiPr2)]+}: X-ray crystal structures of and

Nucleophilic addition reactions to the allenylidene complex [Cp∗RuCCCPh2(CO)(PMeiPr2)]+: X-ray crystal structures of , , and

“…All solvents were deoxygenated immediately before use. The complex ½Cp à Ru@C@C@CPh 2 ðCOÞ ðPMe i Pr 2 Þ½BAr 0 4 (1) was prepared according to a recently reported procedure [24]. IR spectra were recorder in Nujol mulls on a Perkin-Elmer Spectrum 1000 spectrophotometer.…”

“…Calc. for C 72 H 71 BF 24 A deep purple solution of 1 (500 mg, 0.35 mmol) in 10 ml of dichloromethane was treated with propanethiol (0.05 ml, 0.70 mmol) and stirred for 6 h. The solvent was removed in vacuo. Petroleum ether was added, and the suspension was filtered off in order to remove the excess of propanethiol.…”

“…The introduction of a strong p-acceptor ligand such as CO modifies both the electronic and the steric properties of the metallic fragment, modifying the reactivity of the allenylidene ligand accordingly. In the context of our studies in the chemistry of pentamethylcyclopentadienylruthenium complexes, we have recently reported the preparation and characterization of the electron-deficient allenylidene complex ½Cp à Ru@C@ C@CPh 2 ðCOÞðPMe i Pr 2 Þ½BAr 0 4 (Ar 0 = 3,5-C 6 H 3 (CF 3 ) 2 ) [24]. In this work, we focus on the study of the reactivity of this complex towards a variety of nucleophiles containing N-, P-or S-donor atoms.…”

Diastereoselectivity at chiral metal center of half-sandwich-type ruthenium complexes with planar-chiral cyclopentadienyl ligands in multiple ligand transfer reaction

“…Heterodinuclear complex (11) is generated by the dissociation of two acetonitrile ligands from 1 and the subsequent reaction with 2 [10]. Cationic iron complex (13), which is unstable and easily decomposed to give ferrocene 6 and free phosphine ligand, is eliminated from 11 to form neutral ruthenium complex 9 or 12.…”

“…15) P2 1 /c (no. 14) a (Å ) 10.067 (2) 9.547 (3) 10.144(3) 9.502 (2) 31.548 (4) 13.568(2) b (Å ) 9.951 (2) 17.797 (4) 18.353 (2) 16.434 (3) 7.955 (2) 16.115(2) c (Å )…”