Reaction of Ruthenium Ethyne‐1,2‐diyl Compounds with Bis(trimethylsilyl)acetylene Complexes of Titanocene and Zirconocene: Remarkable Transfer of a C₂ Ligand

Abstract

2 ], depicted above, results from the acidic treatment of a precursor metallocene complex. This carbon-carbon bond-forming reaction is thought to be unprecedented. For more information, see the Communication by G. A. Koutsantonis and co-workers on the following pages.

Coordinating Tectons: Bipyridyl-Terminated Group 8 Alkynyl Complexes

“…We have found that the CpRu(CO) 2 moiety is extremely flexible in its mode of coordination and has allowed us to investigate a number of unusual − bonding situations. Thus, we first decided to attempt the formation of mono-alkynyl complexes to provide suitable models for the formation of oligomeric complexes.…”

Anion-Directed Solid-State Structures of Copper(I) and Silver(I) Adducts of Ruthenium Ethyne-1,2-diyl Compounds

“…In this paper we present the results of the synthesis and structural characterization of some coinage metal (Cu and Ag) adducts of [{Ru­(CO) 2 (η-C 5 H 4 R)} 2 (μ 2 -CC)] ( 1a , R = H; 1b , R = Me), continuing an investigation of ruthenium ethyne-1,2-diyl complexes. − The structures of the adducts were probed in solution and the solid state, resulting in the single-crystal X-ray structure determinations of [Ag 3 ({Ru­(CO) 2 (η-C 5 H 4 Me)} 2 (μ 2 -η 1 :η 1 -CC)) 3 ]­(O 3 SCF 3 ) 3 ( 2b ), [Ag 3 ({Ru­(CO) 2 (η-C 5 H 4 R)} 2 (μ 2 -η 1 :η 1 -CC))­({Ru­(CO) 2 (η-C 5 H 4 R)} 2 (μ 2 -η 1 :η 2 -CC)) 2 ]­(BF 4 ) 3 (R = H, 3a ; R = Me, 3b ), [Ag 4 ({Ru­(CO) 2 (η-C 5 H 4 R)} 2 (μ 2 -η 2 -CC)) 2 ]­(μ 2 -O 2 CCF 3 ) 4 (R = H, 4a ; Me, 4b ), [Ag­({Ru­(CO) 2 (η-C 5 H 5 )} 2 (η 2 -CC)) 2 ]­(BF 4 ) ( 5 ), [Cu­({Ru­(CO) 2 (η-C 5 H 5 )} 2 (η 2 -CC)) 2 ]­(PF 6 ) ( 6 ), [Cu 3 ({Ru­(CO) 2 (η-C 5 H 5 )} 2 (μ 2 -η 1 :η 2 -CC))­({Ru­(CO) 2 (η-C 5 H 5 )} 2 (μ 2 -η 2 -CC))]­(PF 6 ) 3 ( 7a ), [Cu 3 ({Ru­(CO) 2 (η-C 5 H 4 Me)} 2 (μ 2 -η 1 :η 2 -CC)) 3 ]­(PF 6 ) 3 ( 7b ), [Cu 2 (μ-Cl) 2 ({Ru­(CO) 2 (η-C 5 H 4 R)} 2 (η 2 -CC))] ∞/∞∞ (R = H, 8a ; R = Me, 8b ), [Cu 2 (μ-Br) 2 ({Ru­(CO) 2 (η-C 5 H 4 Me)} 2 (η 2 -CC))] ( 9 ), and [{Ru­(CO) 2 (η-C 5 H 5 )} 3 (η 1 : η 2 -CC))]­[BF 4 ] ( 10 ).…”

Supramolecular interactions between hexabromoethane and cyclopentadienyl ruthenium bromides: Halogen bonding or electrostatic organisation?

“…[10][11][12] We have for some considerable time explored the chemistry associated with the CpRu(CO) 2 moiety because of the conformational flexibility it exhibits, which has allowed the isolation of many interesting complexes. [13][14][15][16][17][18][19][20][21][22] In the course of preparing [CpRu(CO) 2 Br] using a minor modification of the published procedure 23 (using bromoform rather than CBr 4 ) we discovered that the reaction did not proceed according to our expectations, Scheme 1, giving not only the expected bromide complex but also gave appreciable contamination with hexabromoethane.…”