Concurrent Rearrangement of Phenylimido and Alkenyl Ligands on a WRu2 Metal Triangle

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Ren-Chiun Lin
  • Yun Chi
  • Shie-Ming Peng
  • Gene-Hsiang Lee

Detail(s)

Original languageEnglish
Pages (from-to)227-232
Journal / PublicationJournal of the Chemical Society, Dalton Transactions
Issue number2
Publication statusPublished - 1993
Externally publishedYes

Abstract

Thermolysis of the phenylimido cluster [WRu2(η-C5Me5)(CO)73-NPh)(CF3CCHCF3)] 1b in refluxing toluene yielded a hydrido-alkyne complex [WRu2(η-C5Me5)(CO)6H(μ-NPh){C2(CF3)2}] 4 via CO elimination and alkenyl C-H activation. Treatment of 4 with CO in refluxing toluene induced the formation of a second alkenyl complex [WRu2(η-C5Me5)(CO)7(μ-NPh)(CF3CCHCF3)] 2b containing a doubly bridging imido ligand and face-bridging alkenyl ligand. This transformation between 4 and 2b is reversible since complex 4 can be regenerated by thermolysis of 2b in toluene. Complexes 4 and 2b were also examined by single-crystal X-ray diffraction. Crystal data for 4: triclinic space group PĪ; a = 10.332(1), b = 17.296(4), c = 18.351(2) Å, α = 110.81(1), β = 106.31(1), γ = 92.46(2)°, Z = 4; final R = 0.026, R' = 0.024 for 6445 reflections with I > 2σ(I). Crystal data for 2b: monoclinic, space group P21/n; a = 11.398(3), b = 22.965(6), c = 11.670(3) Å, β = 99.78(2)°, Z = 4; final R = 0.025, R′ = 0.024 for 3526 reflections with I > 2σ(I).