http://hdl.handle.net/10362/4545 2013-05-25T09:13:48Z http://hdl.handle.net/10362/6858 Title: Cyclopentadienyl-functionalised N-heterocyclic carbenes: synthesis, coordination to Mo, Ru, Rh Authors: Costa, André Pontes da Abstract: This thesis deals with the synthesis of cyclopentadienyl-functionalised N-heterocyclic carbenes and its coordination to both middle and late transition metals. One of the goals was to gain chemical knowledge on the reactivity patterns of these complexes, and explore their potential applications in catalysis. The imidazolium salts synthesised in the course of this thesis represent a series containing changes in the electronic and steric parameters. The ligand precursors were coordinated to molybdenum, ruthenium, rhodium and iridium. These organometallic complexes were studied in homogeneous catalysis processes such as: olefin epoxidation (Mo), isomerisation of allylic alcohols (Ru), b-alkylation of alcohols, Nalkylation of amines and transfers hydrogenation of ketones (Ir).(...) Description: Dissertation presented to obtain the Ph.D degree in Chemistry 2011-06-01T00:00:00Z http://hdl.handle.net/10362/6180 Title: Oxo-molybdenum(VI) complexes containing chiral ligands: catalytic applications in selective epoxidations Authors: Brito, José Angel Description: Dissertation presented to obtain the Ph.D. degree in Chemistry 2011-09-01T00:00:00Z