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Synlett 1996; 1996(1): 1-10
DOI: 10.1055/s-1996-5300
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Bis(alkynyl) Titanocenes as Organometallic Chelating Ligands for the Stabilization of Monomeric Organo Copper(I) Compounds

Heinrich Lang* , Markus Weinmann
  • *Ruprechts-Karls-Universität, Anorganisch-Chemisches Institut, Im Neuenheimer Feld 270, D-69120 Heidelberg (Germany), Fax 06221-56-5707
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Publication Date:
31 December 2000 (online)

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3-Titana-penta-1,4-diynes, RC≡C-[Ti]-C≡CR {[Ti] = (η5-C5H4SiMe3)2Ti; R = singly bonded organic ligand}, can be used as organometallic chelating ligands (organometallic π-tweezers) for the breakdown of oligomeric or polymeric copper(I) compounds [CuIX]n (X = singly bonded inorganic or organic ligand) to mononuclear bis-(η2-alkyne)CuIX species, {[Ti](C≡CR)2}CuIX. The synthesis, reaction behaviour, bonding and spectroscopy of {[Ti](C≡CR)2}CuIX compounds are discussed.

alkynyl titanocene chlorides - bis(alkynyl) titanocenes - monomeric copper(I) compounds - reaction chemistry - structure and bonding