Choosing between Ti( ii ) and Ti( iii ): selective reduction of titanocene dichloride by elemental lanthanides - Archive ouverte HAL
Article Dans Une Revue Dalton Transactions Année : 2024

Choosing between Ti( ii ) and Ti( iii ): selective reduction of titanocene dichloride by elemental lanthanides

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The reduction of titanocene dichloride Cp2TiCl2 with lanthanide metals has led to the discovery of a surprising lanthanide effect: while with most lanthanides, a divalent [Cp2Ti] equivalent was obtained, the use of samarium or ytterbium only led to the reduction to trivalent [Cp2TiCl]-type complexes, including the structurally characterized heterobimetallic complex [Cp2Ti(μ-Cl)2SmCl2(THF)3]. These results were corroborated by reactivity studies (alkyne coupling and radical reactions), EPR spectroscopy and electrospray mass spectrometry, providing new insights into the reduction chemistry of lanthanide metals.

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hal-04730338 , version 1 (10-10-2024)

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Guillaume Bousrez, Dominique Harakat, Sylviane Chevreux, Isabelle Déchamps-Olivier, Florian Jaroschik. Choosing between Ti( ii ) and Ti( iii ): selective reduction of titanocene dichloride by elemental lanthanides. Dalton Transactions, 2024, 53 (37), pp.15595-15601. ⟨10.1039/d4dt02004a⟩. ⟨hal-04730338⟩
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