The reactivity of MX5 (M = Nb, Ta; X = F, Cl, Br, I) with controlled amounts of THF allowed the isolation of probable intermediates of the THF polymerization reaction catalyzed by MX5. In particular, the ionic compounds give information of the fact that the polymerization requires, at a certain step, halide migration from one metal center to another, and confirm the generally accepted mechanism known for the cationic polymerization of cyclic ethers, for which an oxonium ion is involved in the chain growth.

The Reactivity of Niobium and Tantalum Pentahalides with Cyclic Ethers and the Isolation and the Characterization of Intermediates of the Polymerization of Tetrahydrofuran

MARCHETTI, FABIO;PAMPALONI, GUIDO;
2008

Abstract

The reactivity of MX5 (M = Nb, Ta; X = F, Cl, Br, I) with controlled amounts of THF allowed the isolation of probable intermediates of the THF polymerization reaction catalyzed by MX5. In particular, the ionic compounds give information of the fact that the polymerization requires, at a certain step, halide migration from one metal center to another, and confirm the generally accepted mechanism known for the cationic polymerization of cyclic ethers, for which an oxonium ion is involved in the chain growth.
Marchetti, Fabio; Pampaloni, Guido; Zacchini, S.
File in questo prodotto:
File Dimensione Formato  
29 Inorg Chem.pdf

solo utenti autorizzati

Tipologia: Documento in Pre-print
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 314.07 kB
Formato Adobe PDF
314.07 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/202454
Citazioni
  • ???jsp.display-item.citation.pmc??? 2
  • Scopus 51
  • ???jsp.display-item.citation.isi??? 51
social impact