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'Methyltetraphenylcyclobutenyl Rhodium Complexes' in keywords
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1988 (1)
1Author    Jörn Müller, Matthias Tschampel, Carl KrügerRequires cookie*
 Title    Rhodium-zentrierte Bildung eines Cyclobutenyl-Liganden und Umlagerung in einen Cyclopentadienyl-Komplex Rhodium-centered Formation of a Cyclobutenyl Ligand and Rearrangement to a Cyclopentadienyl Complex  
 Abstract    Cyclization of two diphenylacetylene molecules occurs if [(cod)RhCl] 2 (cod = 1.5-cyclooc-tadiene) is treated with methyllithium in the presence of tolane. The isolated (cod)Rh complex 2 contains an e*o-methyl-tetraphenylcyclobutenyl ligand and was characterized by X-ray diffraction analysis. Thermolysis of 2 in acetonitrile causes ring expansion of the methylcyclobutenyl unit with formation of the tretraphenylcyclopentadienyl complex 3 together with 3-methyl-tet-raphenylcyclobutene. Mechanistic aspects are discussed as well as spectroscopic data of the new compounds. 
  Reference    Z. Naturforsch. 43b, 1519—1523 (1988); eingegangen am 13. Juni 1988 
  Published    1988 
  Keywords    Methyltetraphenylcyclobutenyl Rhodium Complexes, Tetraphenylcyclopentadienyl Rhodium Complexes, NMR Spectra, Crystal Structure 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-1519.pdf 
 Identifier    ZNB-1988-43b-1519 
 Volume    43