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Unusual Reactions of Titanocene- and Zirconocene-Generating Complexes
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1996
Year
Inorganic ChemistryChemical EngineeringTitanocene Alkyne ComplexEngineeringUnusual ReactionsCoordination ComplexAdditional Ligands Cp2tiMolecular ComplexChemistryPhosphine LigandsCrystallographyInorganic SynthesisInorganic Compound
The titanocene alkyne complex without any additional ligands Cp2Ti(Me3SiC≡CSiMe3) 1 and the zirconocene alkyne complexes free from stabilizing phosphine ligands (Cp2Zr(L)(Me3SiC≡CSiMe3) (L = THF 2, pyridine 3) as well as the metallacyclic complex Cp2Zr-O-CMe2-C(SiMe3)=C(SiMe3) 4 react with some substrates in an unusual manner depending on metals M, ligands L and the substituents R of the substrates. Also in some cases the competitive reaction of coupling of the complexed alkyne occurs. In this account all products without coupling of the silylalkyne are numbered, the data of detailed NMR studies and X-ray crystal structure analyses are given in the cited references.