Carbonyl ligand substitution at rhodium in the heterometallic cluster [PPN]2[Re7C(CO)21Rh(CO)2]. A reactivity comparison with mononuclear (n5-C5H5Rh(CO)2 and related compounds

A Carbidoheptarhenate Complex of Thallium(I)

“…The infrared spectrum of the dianion 1 2- shows several weak absorptions and one strong carbonyl absorption at 1990 cm -1 . The principal CO stretching band is shifted 22 cm -1 from that for [Re 7 C(CO) 21 ] 3- (1968 cm -1 ), which is comparable with the shift observed for other mixed-metal−rhenium carbido clusters [Re 7 C(CO) 21 ML n ] 2- . , …”

“…We have examined in previous papers the analogy between the carbidoheptarhenate cluster [Re 7 C(CO) 21 ] 3- and the cyclopentadienide ion as ligands by the synthesis of [Re 7 C(CO) 21 ML n ] 2- complexes corresponding to known CpML n complexes. The thallium(I) complexes of the cyclopentadienide, dicarbollide, and pyrazolylborate ligands are key reagents for the formation of the corresponding organometallic complexes.…”

Hydride and Gold(triphenylphosphine) Derivatives of Hexarhenium Carbido Octadecacarbonyl

“…A variety of interesting cluster compounds results formally from the interaction of the octahedral [Re 6 (μ 6 -C)(CO) 18 ] 4- cluster core with one or more electrophilic moieties. − The set for one added electrophile (X + = H + , Re(CO) 3 + , M(CO) n 2+ , Re(CO) 3 L 3+ ) includes the clusters [HRe 6 C(CO) 18 ] 3- , [Re 7 C(CO) 21 ] 3- , [Re 6 C(CO) 18 M(CO) n ] 2- (M = Ru, n = 3; M = Mo, n = 4), and [Re 7 C(CO) 21 P(OPh) 3 ] 1- [HRe 7 C(CO) 21 ] 2- , , [Re 8 C(CO) 24 ] 2- , and [Re 7 C(CO) 21 ML n ] 2- (M = Rh, , Ir, 9,11 Pd, 9,12 Pt, Cu, Ag, Au, 6,13 Hg, Tl 15 ), and the only previously reported example of three added electrophiles (X + , Y + , Z + = H + , H + , Re(CO) 3 + ) is [H 2 Re 7 C(CO) 21 ] 1- …”

Stepwise Formation of Heterometallic Cluster Compounds (C5Me5)WRu5(μ6-C)(μ-CCH2Ph)(μ-H)2(CO)13and (C5Me5)WRu5(μ4-C)(μ3-CCH2Ph)(μ-H)4(CO)12from Ru5(μ5-C)(CO)15. Reactivity Studies of Carbido Clusters Bearing Acetylide Ligands

“…Recently, investigation of the chemistry of metal carbido clusters has become a rapidly expanding reseach domain, as the interstitial carbido carbon tends to confer high stability to the cluster, so that the skeleton can sustain the severe reaction conditions employed . As a result, many methods of building the metal framework around the carbide atom have been established, and the reactivity of these carbide clusters with both organic and organometallic substrates has also been studied in attempts to extend the scope of this area …”