One-pot synthesis of an ionic half-sandwich complex of Neodymium. Application to stereospecific isoprene polymerization catalysis.

Marc Visseaux (1) , Michael Terrier (1) , André Mortreux (1) , Pascal Roussel (1)

1 UCCS - Unité de Catalyse et Chimie du Solide - UMR 8181

The reaction of one equivalent of Nd(BH4)3(THF)3 with an half equivalent of dialkylmagnesium in the presence of a stoechiometric amount of pentamethylcyclopentadiene cleanly affords a new kind of half-sandwich of neodymium that is stable toward comproportionation. This strategy can be advantageously applied to generate in situ catalysts allowing the controlled polymerisation of isoprene.

Mots clés: Neodymium; Half-sandwich; Polymerisation catalysis; Trans-polyisoprene

Domaines: Chimie inorganique

Marc Visseaux, Michael Terrier, André Mortreux, Pascal Roussel. One-pot synthesis of an ionic half-sandwich complex of Neodymium. Application to stereospecific isoprene polymerization catalysis.. Comptes Rendus. Chimie, 2007, 10, pp.1195. ⟨10.1016/j.crci.2007.06.012⟩. ⟨hal-00187570⟩