Metallocene complexes are well established highly active single-center catalysts for the homo- and co-polymerisation of 1-olefins. Their importance lies also in the fact that little changes in their molecular architecture lead to polymers with remarkably different properties. We have recently reported a new synthetic pathway that has proved successful for a versatile and "tuned" synthesis of a variety of bicyclic cyclopentadienyl ligands and their corresponding organometallic compounds in good yields, with only minor purification steps, and reproducible in large-scale quantities. These new complexes allowed us to study in more detail structure/activity relationships in propene polymerisation depending on the simultaneous effect of the type of ring fused to the cyclopentadienyl moiety and on the substituent in position 2.
Zirconium complexes with mono-substituted tetrahydroindenyl-type ligands: preparation and application to propene synthesis
Polo E;Losio S;
2001
Abstract
Metallocene complexes are well established highly active single-center catalysts for the homo- and co-polymerisation of 1-olefins. Their importance lies also in the fact that little changes in their molecular architecture lead to polymers with remarkably different properties. We have recently reported a new synthetic pathway that has proved successful for a versatile and "tuned" synthesis of a variety of bicyclic cyclopentadienyl ligands and their corresponding organometallic compounds in good yields, with only minor purification steps, and reproducible in large-scale quantities. These new complexes allowed us to study in more detail structure/activity relationships in propene polymerisation depending on the simultaneous effect of the type of ring fused to the cyclopentadienyl moiety and on the substituent in position 2.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
