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Novel Dinuclear Redox-isomeric Complexes with a Tetrapodal Pyridine-based Ligand

Bubnov, Michael P. ; Skorodumova, Nina A. ; Zolotukhin, Alexey A. ; Arapova, Alla V. ; Baranov, Evgenii V. ; Stritt, Anika ; Ünal, Alper ; Grohmann, Andreas ; Heinemann, Frank W. ; Bogomyakov, Artem S. ; Smirnova, Natal'a N. ; Cherkasov, Vladimir K. ; Abakumov, Gleb A.

Zeitschrift für anorganische und allgemeine Chemie (1950), 2014-09, Vol.640 (11), p.2177-2182 [Periódico revisado por pares]

Weinheim: WILEY-VCH Verlag

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  • Título:
    Novel Dinuclear Redox-isomeric Complexes with a Tetrapodal Pyridine-based Ligand
  • Autor: Bubnov, Michael P. ; Skorodumova, Nina A. ; Zolotukhin, Alexey A. ; Arapova, Alla V. ; Baranov, Evgenii V. ; Stritt, Anika ; Ünal, Alper ; Grohmann, Andreas ; Heinemann, Frank W. ; Bogomyakov, Artem S. ; Smirnova, Natal'a N. ; Cherkasov, Vladimir K. ; Abakumov, Gleb A.
  • Assuntos: Cobalt ; Coordination modes ; EPR spectroscopy ; Ligands ; Magnetic properties ; O-ligands ; Structure elucidation
  • É parte de: Zeitschrift für anorganische und allgemeine Chemie (1950), 2014-09, Vol.640 (11), p.2177-2182
  • Notas: Russian President grant supporting scientific schools - No. NSh-271.2014.3
    Program of Presidium of RAS No 18
    ArticleID:ZAAC201400242
    istex:C1237B1B74DDF514175404DF379F03B0EDEDCE59
    Supporting Information for this article is available on the WWW under http://dx.doi.org/10.1002/zaac.201400242 or from the author.
    RFBR - No. 13-03-97070; No. 13-03-12444; No. 13-03-97082
    ark:/67375/WNG-JW396N5L-2
    or from the author.
    Supporting Information for this article is available on the WWW under
    http://dx.doi.org/10.1002/zaac.201400242
  • Descrição: Tris‐o‐semiquinonato cobalt complexes react with a tetrapodal pyridine‐derived ligand to form dinuclear cobalt compounds of general formula (OMP)[CoQ2]2, where OMP = 2,2′‐(pyridine‐2,6‐diyl)bis(N1,N1,N3,N3‐tetramethylpropane‐1,3‐diamine), Q = mono‐ or dianion of 3,6‐di‐tert‐butyl‐o‐benzoquinone (complex 1) and it derivatives: 3,6‐di‐tert‐butyl‐4,5‐N,N′‐piperazino‐o‐benzoquinone (complex 2), and 3,6‐di‐tert‐butyl‐4‐Cl‐o‐benzoquinone (complex 3). Single crystal X‐ray crystallography of 1 and 3 indicates two bis‐quinonato cobalt units bound by an OMP ligand, which acts as a bridge. Each central cobalt atom is chelated by one N1,N1,N3,N3‐tetramethylpropane‐1,3‐diamine and two o‐quinonato fragments. The nitrogen atom of the pyridine ring is uncoordinated. All complexes were characterized by NIR‐IR and EPR spectroscopy, precise adiabatic vacuum calorimetry, and by variable‐temperature magnetic susceptibility measurements. All data indicate a reversible thermally driven redox‐isomeric (valence tautomeric) transformation in the solid state for all complexes.
  • Editor: Weinheim: WILEY-VCH Verlag
  • Idioma: Inglês;Alemão
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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