A Carbidoheptarhenate Complex of Thallium(I)

Abstract

The reaction of TlPF6 with [Re7C(CO)21]3- in dichloromethane produces [Re7C(CO)21(μ3-Tl]2-, isolated in high yield as PPN+ or PPh4 + salts. The complex is strongly dissociated in acetone. Treatment of the complex with AuCl(PPh3) gives [Re7C(CO)21(AuPPh3)]2- and TlCl.

Carbidoheptarhenate Cluster Complexes of Mercury with Hydrosulfide or Functionalized Thiolate Ligands

“…The average of 2.87 Å is identical to that found for the arenethiolate complex [Re 7 C(CO) 21 HgSC 6 H 4 Br] 2- . The Re−Re distances in the hydrosulfide complex 2 are closely comparable to those found in other carbidoheptarhenate clusters of the type [Re 7 C(CO) 21 ML n ] 2- . , …”

“…The solvents used were distilled from appropriate drying agents and degassed before use. The compounds [PPh 4 ] 3 [Re 7 C(CO) 21 ] , and [PPh 4 ] 2 [Re 7 C(CO) 21 HgOH] 2 were prepared as reported. The reagents 4-bromothiophenol (Aldrich), 4-mercaptopyridine (Aldrich), 3-mercaptopropionic acid (Aldrich), and cysteamine (Fluka) were used as received.…”

A New Class of Oligonuclear Platinum-Thallium Compounds with a Direct Metal−Metal Bond - 3. Unusual Equilibria in Aqueous Solution

“…In another carbonyl mixed metal cluster, [Re 7 C(CO) 21 Tl] 2Ϫ , dissociation of µ 3 -Tl I was followed by infrared spectroscopy in acetone and a dissociation constant K ϭ 2.1 · 10 Ϫ3  was calculated. [13] Also for the related cyano metal clusters equilibrium data are very scarce. A study of a stepwise coordination of cyanide to MoϪMo and WϪW bonded clusters has been published, but a formation of the metalϪmetal bond is not involved in the qualitative description of the equilibria.…”

“…The data on reversible equilibrium processes for metalϪmetal bonded compounds is practically non-existent. [11] [12] [13] Also for metalϪcarbon bonded compounds (excluding cyano complexes) the information is very scarce. [14] [15] Equilibrium models, which are routinely used in coordination chemistry, would provide obvious advantages also for cluster chemistry, e.g.…”

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- …”