Synthesis and structure of Co3(μ3-S) (C6F5) (CO)8, a cobalt carbonyl cluster with an aryl-metal sigma bond

Dicobalt octacarbonyl and perfluoro diphenyl disulfide react to form Co3(μ3-S) (C6F5)(CO)8 (1), an unusual cobalt carbonyl cluster containing an aryl-metal sigma bond. The structure of complex 1 was determined by X-ray crystallography; it crystallizes in triclinic P-1 space group with a = 8.218(2), b = 13.379(2), c = 18.864(2) A, α = 106.96(2), β = 96.91(2), γ = 97.39(2)°. The final R is 0.0376 for 5286 observed reflections (F0>4.0σF0).