Reaction of the heteronuclear cluster RuOs3(μ-H)2(CO)13 with toluene

Reactivity of the heteronuclear cluster RuOs3(μ-H)2(CO)13 with indene

“…It is noted that the ruthenium atom capped by the five-membered ring is found in an equatorial position in the metal core; there was no evidence for an isomer with the cyclopentadienyl ring of the indenyl ligand capping a metal atom at the axial site. This observation is consistent with that observed for the closely related toluene analogue Ru 2 Os 3 (CO) 12 -(l-CO)(g 6 -C 6 H 5 Me) (5a) [9], and is also in line with previous reports on trigonal bipyramidal pentanuclear osmium and ruthenium clusters containing arene or cyclopentadienyl ligands; without exception, the aromatic ligand always occupies an equatorial position on the pentanuclear metal framework. It has been suggested that having the M(g 5 -C 5 H 5 ) fragment in the equatorial position enhanced the electron density donation from the equatorial to the axial sites, thereby stabilizing the cluster [5].…”

“…Under thermal activation, fragmentation of 3 is apparently favoured over decarbonylation to form 4, and the resultant Ru(g 5 -C 9 H 7 ) fragment combines with 1 to afford 5. This presumably occurs via a pathway previously proposed for 5a, [9] which would involve the capping of the Ru(g 5 -C 9 H 7 ) fragment onto an RuOs 2 face in 1 and subsequent polyhedral (7);…”

The Aromatization of C5 Rings on a Heteronuclear Cluster

“…We had earlier developed a high-yield synthetic route to the hetero group 8 tetranuclear cluster RuOs 3 (µ-H) 2 (CO) 13 (1) and have initiated a series of investigations into the chemistry of 1 and its derivatives. [3,4] It is with an exploration of the reactivity of a heteronuclear cluster with C 5 carbocyclic rings in mind that we would like to report here the results of our investigations into the reaction of 1 with a number of representative saturated and unsaturated C 5 rings, particularly in relation to their binding and transformation on the cluster. cyclopentenes, and cyclopentadienes at 120°C afforded tetrahedral clusters of the general formula RuOs 3 (µ-H)(CO) 9 -(µ-CO) 2 (η 5 -C 5 R 4 RЈ) (2) in moderate to high yields; this is depicted in Scheme 1.…”

Ditertiary phosphine derivatives of the heteronuclear cluster RuOs3(μ-H)2(CO)13

“…Besides 2c, the reaction of 1 with dppp also yielded [RuOs 3 (l-H) 2 (CO) 10 (l-CO)] 2 (l-dppp) 2 (3). A molecular plot of 3 is shown in Fig.…”

“…We have recently reported a high-yield synthetic route to 1, and have embarked on a series of investigations into its chemistry. The reactivity of 1 with group 15 ligands as well as various organic substrates has been described [2,3]. As part of our ongoing studies on the chemistry of 1 and its derivatives, we have examined the substitution chemistry of 1 with a number of representative ditertiary phosphines.…”