Synthesis and Characterization of Chromium(I) Bis(h6-toluene) Derivatives Containing Sterically Demanding Anions (Articolo in rivista)

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Label
  • Synthesis and Characterization of Chromium(I) Bis(h6-toluene) Derivatives Containing Sterically Demanding Anions (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • L. Calucci, U. Englert, E. Grigiotti, F. Laschi, G. Pampaloni, C. Pinzino, M. Volpe, and P. Zanello (2006)
    Synthesis and Characterization of Chromium(I) Bis(h6-toluene) Derivatives Containing Sterically Demanding Anions
    in Journal of organometallic chemistry (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • L. Calucci, U. Englert, E. Grigiotti, F. Laschi, G. Pampaloni, C. Pinzino, M. Volpe, and P. Zanello (literal)
Pagina inizio
  • 829 (literal)
Pagina fine
  • 836 (literal)
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  • 691 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Istituto per i Processi Chimico-Fisici, CNR, Area della Ricerca, Via G. Moruzzi 1, I-56124 Pisa, Italy Institut fu¨ r Anorganische Chemie der RWTH Aachen, Landoltweg 1, D-52074 Aachen, Germany Universita` di Siena, Dipartimento di Chimica, Via Aldo Moro, 53100 Siena, Italy Universita` di Pisa, Dipartimento di Chimica e Chimica Industriale, Via Risorgimento 35, I-56126 Pisa, Italy (literal)
Titolo
  • Synthesis and Characterization of Chromium(I) Bis(h6-toluene) Derivatives Containing Sterically Demanding Anions (literal)
Abstract
  • The reaction of Cr(h6-CH3C6H5)2 with 1-benzoyl-6-hydroxy-6-phenyl fulvene, dbcpH, and with pentakis(methoxycarbonyl)cyclopentadiene, pcmcpH, proceeds with evolution of dihydrogen and the formation of the ionic derivatives [Cr(h6-CH3C6H5)2][X] ([X]- = 1,2-dibenzoylcyclopentadienyl, [dbcp]-, pentakis(methoxycarbonyl)cyclopentadienyl, [pcmcp]-), which have been characterized by IR and EPR spectroscopies, X-ray diffraction and electrochemical techniques. The sterically demanding anions do not affect the structural and electronic properties of the Cr(h6-CH3C6H5)+2 cations in solution but strongly influence crystal packing. In fact, a rare ciseclipsed conformation of the toluene rings is found for [Cr(h6-CH3C6H5)2][dbcp]. THF, whereas two independent complexes are observed in the unit cell of [Cr(h6-CH3C6H5)2][pcmcp], one with toluene rings in a cis-eclipsed conformation and the other in a staggered conformation (projections of methyl groups form an angle of 151). (literal)
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