π-Arene complexes. 8. Early/late heterobimetallic complexes of chromium with σ,π-bridged arene ligands

Petrus H. Van Rooyen, Minet Schindehutte, Simon Lotz

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Abstract

New heterobimetallic and trimetallic complexes of titanium, [Ti(η5-C5H5) 2(Cl)(μ-η16-RC6H 4) Cr(CO)3] (R = H (1), o-F (2), p-CH3 (3), m-CH3 (4), [Ti(η5-C5H5) 2(Cl)(μ-η16-C6Me 5CH2)Cr(CO)3] (5), and [(μ-{Ti(η5-C5H5) 2}){(η16-RC6H 4)Cr(CO)3}2] (R = H (6), p-CH3 (7)), and gold, [Au(PPh3)(μ-η16-RC6H 4)Cr(CO)3] (R = H (9), o-F (10)), were prepared by the addition of the transition-metal halide Ti(η5-C5H5)2(Cl)2 or Au{PPh3}Cl to a tetrahyrofuran solution of the appropriate lithiated (π-arene) tricarbonylchromium(0) substrate. The characterization of the bi- and trinuclear products by analytical and NMR, IR, and mass spectral data is supportes by X-ray studies of the fluorobenzene (2) and toluene (3) derivatives, which confirm that the phenyl ligand is π-coordinated to the chromium tricarbonyl group, as well as σ-bonded to the bent metallocene. Crystals of 2 were monoclinic, P21/n, with a = 10.431 (4) Å, b = 12.506 (13) Å, c = 13.905 (3) Å, β = 106.38 (2)°, Z = 4. Crystals of 3 were orthorhombic, Pbca, with a = 14.138 (2) Å, b = 13.625 (2) Å, c = 19.229 (6) Å, and Z = 8.

Original languageEnglish (US)
Pages (from-to)1104-1111
Number of pages8
JournalOrganometallics
Volume11
Issue number3
StatePublished - 1992
Externally publishedYes

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

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