Complexes of platinum(II) containing ferrocenylethynyl ligands: synthesis, characterization and spectroscopic and electrochemical properties

  1. Díez, Á. 1
  2. Fernández, J. 1
  3. Lalinde, E. 1
  4. Moreno, M.T. 1
  5. Sánchez, S. 1
  1. 1 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

Revista:
Dalton Transactions

ISSN: 1477-9226

Ano de publicación: 2008

Volume: 36

Páxinas: 4926-4936

Tipo: Artigo

DOI: 10.1039/B806572A SCOPUS: 2-s2.0-50849089295 WoS: WOS:000258949400015 GOOGLE SCHOLAR

Outras publicacións en: Dalton Transactions

Repositorio institucional: lock_openAcceso aberto Editor

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Resumo

A series of homoleptic and heteroleptic platinum(ii) complexes [Pt(C≡CFc)2(L-L)] (L-L = COD 1, 1,1′- bis(diphenylphosphino)ferrocene (dppf) 2), Q2[cis/trans-Pt(C 6F5)2(C≡] (cis, Q = PMePh3, 3; trans, Q = NBu4, 4), (NBu4)[Pt(bzq)(C≡CFc) 2] 5 (Hbzq = 7,8-benzoquinoline) and (NBu4) 2[Pt(C≡CFc)4] 6 has been synthesized and characterized spectroscopically and the structures of 1•2CHCl3, 2 and 6•2H2O•2CH2Cl2 confirmed by single-crystal X-ray studies. The anion of complex 6, shows strong O-Hπ(C≡C) interactions and weaker C-Clπ(C≡C) contacts between the protons of two water and two CH2Cl2 molecules and the CαCβ of mutually cis alkynyl groups. In this complex the presence of additional O-HH-C(Cp) and C-ClH-C(Cp) contacts gives rise to an extended bidimensional network. The optical and electrochemical properties of all derivatives have been examined. It is remarkable that for complexes 2 and 5 a facile oxidatively induced coupling, giving rise to 1,4-diferrocenylbutadiyne, is observed, this also having been proven by chemical oxidation. © 2008 The Royal Society of Chemistry.