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'Pentamethylcyclopentadienyl arene ruthenium Hexafluorophosphates Synthesis' in keywords
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1990 (1)
1Author    Á. Vez, C. Rés, M. Isternas, O. Argarita, E. Tero, R. Nrique, U. Lr Ic, LlerRequires cookie*
 Title    Syntheses and Electrochemical Properties of |C5M e5Ru]+ Complexes with Polycyclic Arenes. Crystal Structure of |(C5M e5)Ru( //'-chrysene)] PF6 * 0.5 M e2CO  
 Abstract    M ononuclear and binuclear com pounds [(C5M e5)Ru(//6-arene)PF6 and [(C5M e5R u)2(//6,/76-arene)](PF6)-, were prepared by reacting (C5M e5)RuCl2, the arene and silver acetate with subsequent addition o f N H 4PF6, for arene = phenanthrene, chrysene, tripheny-lene, fluorene, bifluorene. biphenyl and 4,4'-biphenyl. The mononuclear com pounds were also prepared for arene = naphthalene, anthracene, pyrene and coronene. The 'H and l3C N M R spectra are reported. By cyclic voltammetry all compounds show a first reduction potential that is considerably more positive compared with the free arene. The first cathodic wave is irreversible for a wide range o f scanning speeds. However, the mononuclear coronene and the binuclear phenanthrene com pounds show reversibility. The crystal structure o f [(CsM es)Ru(/76-chrysene)]PF6-0.5 Me^CO was determined by X-ray diffraction (3797 unique observed reflexions, R = 0.098). Crystal data: a = 1689.2(2), b = 1524.0(8), c = 2263.5(3) pm, ß = 107.22(1) , space group P 2,/«, Z = 8. Crystallographically independent, two cations [(C5M e5)Ru(>76-chrysene)]+ and two anions PF6~ are present, but their structures are essentially equal. The [C5M esRu]+ unit is bonded to one o f the terminal benzene rings o f the chrysene in a sandwich manner; the rings bonded to Ru are nearly coplanar. The PF6~ ions and the C5M e5 rings exhibit strong thermal vibrations. 
  Reference    Z. Naturforsch. 45b, 658 (1990); received November 18 1989 
  Published    1990 
  Keywords    Pentamethylcyclopentadienyl-arene-ruthenium Hexafluorophosphates Synthesis, N M R Spectra, Reduction Potentials, Crystal Structure 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-0658.pdf 
 Identifier    ZNB-1990-45b-0658 
 Volume    45