Iron-osmium bonding in clusters containing ferrocene fragments

Article abstract of DOI:10.1021/om00037a050

Pyrolysis of Os₃(CO)₁₀(PFcPh₂)₂ and Os₃(CO)₁₁(PFc₂Ph) affords Os₃(CO)₈(H)₂[PAr(C₆H ₅)(η-C₅H₃)Fe-(η-C₅H ₄)] (Ar = C₆H₅ (3a), Fc (3b), respectively). Os₃(CO)₇(H)(PPrⁱ)[Fe(η-C₅H ₄PPrⁱ₂)(η-C₅H₄)] (4) is a product of the thermolysis of Os₃(CO)₁₀[Fe(η-C₅H₄PPr ⁱ₂)₂]. 3b: triclinic, space group P1 (No. 2), a = 13.878 (2) A?, b = 14.145 (3) A?, c = 10.698 (2) A?, α = 104.28 (1)°, β = 110.88 (1)°, γ = 63.91 (1)°. 3a: monoclinic, space group P2₁/c (No. 14), a = 9.484 (3) A?, b = 18.144 (4) A?, c = 17.421 (3) A?, β = 90.10 (2)°. 4: monoclinic, space group P2₁/n (No. 14), a = 8.910 (3) A?, b = 22.784 (2) A?, c = 15.416 (2) A?, β = 98.25 (2)°. The complexes are electron precise if the Fe→Os bonds of length 2.830 (1) (3a), 2.826 (1) (3b), and 2.813 (1) A? (4) are included.