Unexpected formation of ferrocenyl(vinyl)benzoquinoline ligands by oxidation of an alkyne benzoquinolate platinum(II) complex

  1. Berenguer, J.R. 1
  2. Fernández, J. 1
  3. Giménez, N. 1
  4. Lalinde, E. 1
  5. Moreno, M.T. 1
  6. Sánchez, S. 1
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

Revista:
Organometallics

ISSN: 0276-7333

Año de publicación: 2013

Volumen: 32

Número: 14

Páginas: 3943-3953

Tipo: Artículo

DOI: 10.1021/OM4004384 SCOPUS: 2-s2.0-84880565434 WoS: WOS:000322345300020 GOOGLE SCHOLAR lock_openAcceso abierto editor

Otras publicaciones en: Organometallics

Resumen

Oxidation of [Pt(bzq-κN,κC10)(C6F 5)(η2-HC≡CFc)] (1) with PhICl2 and I2 affords the unusual halideferrocenyl(vinyl)benzoquinoline Pt II derivatives [Pt{bzq-κN-η2-CH-C(X)Fc}(C 6F5)X] (X = Cl (4a), I (4b)), arising from C-X and C-C coupling processes, together with small amounts of the corresponding Pt IV products [{Pt(bzq-κN,κC10)(C 6F5)X(μ-X)}2] (X = Cl (5a), I (5b)), respectively. Complexes 4 are very stable but they undergo easy displacement reactions with PPh3, yielding trans-[Pt(C6F 5)X(PPh3)2] and the corresponding new functionalized (vinyl)benzoquinoline ligands [(Z)-bzq-CH-C(X)Fc] (X = Cl (6a), I (6b)). The dinuclear PtIV derivatives 5 are alternatively obtained in high yield by oxidation of the solvate [Pt(bzq-κN,κC 10)(C6F5)(CH3COCH3)] (2). Treatment of 5 with dmso or direct oxidation of [Pt(bzq-κN,κC 10)(C6F5)(tht)] (3) provides mononuclear [Pt(bzq-κN,κC10)(C6F5)X 2(L)] (L = dmso (7a-c), tht (8a-c)) as a mixture of cis and trans isomers. © 2013 American Chemical Society.