The Reactivity of Halides of High-Valent Group 5 and 6 Elements with Organic Compounds: Coordination Chemistry and Unusual Activation Reactions

The Reactivity of Halides of High-Valent Group 5 and 6 Elements with Organic Compounds: Coordination Chemistry and Unusual Activation Reactions

Relatore
Prof. Fabio Marchetti - Università di Pisa

Data
16-mag-2017 - Ora: 15:00 Sala Verde

Niobium and tantalum pentahalides, molybdenum pentachloride and tungsten hexachloride are easily available solid compounds. We have been involved in the exploration of the reactivity of these halides with stoichiometric amounts of oxygen- and/or nitrogencontaining organic species [1].
The coordination to the metal centre may represent the preliminary step for the transformation of the organic substrate. In a number of cases, the process results in the formation of stable metal-anion salts containing otherwise reactive organic cations [2]. The metal-halide bond energy value and the availability to the metal centre of a oneelectron reduced oxidation state are the two key factors which drive the activation reactions, and provide uniqueness with respect to the parallel chemistry exhibited by high-valent main group element halides [3]. Examples will be given with reference to arenes, α-aminoacids, ureas and nitrogen compounds
Data pubblicazione
28-apr-2017

Dipartimento
Biotecnologie