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Professor Michael Chetcuti
Thursday, October 31, 2019, 11:00am - 12:00pm

Michet Chetcuti“Nickel Complexes with N-heterocyclic Carbene Ligands: Chemistry and Homogeneous Catalytic Reactions”

Simple nickel(II) complexes with N-heterocyclic carbene (NHC) ligands show a large spectrum of activity in homogeneous catalysis, that includes Suzuki-Miyaura coupling, aldehyde, ketones and imine hydrosilylation, and a-ketone arylation. In addition, they are able to promote C–H activation reactions; in addition, the unusual labilization of a cyclopentadienyl ligand bound to an 18-electron Ni complex has been demonstrated with such nickel-NHC complexes. After a review of some earlier research, recent results that include the isolation of a 14-electron T-shaped nickel complex, the catalytic activity of sulfur-containing NHC complexes, alkene hydroboration catalysis and the synthesis of Ni-NHC ligands grafted onto calixarenes will be presented.

Molecule Chetcuti

Recent Publications:
 "Benzothiazole Nickelation: An Obstacle to the Catalytic Arylation of Azoles by Cyclopentadienyl Nickel N-Heterocyclic Carbene Complexes"
Catalysts 2019, 9, 76-85.

"Synthesis, characterization, and catalytic application in aldehyde hydrosilylation of half-sandwich Ni complexes bearing (?1-C)- and hemilabile (?2-C,S)-thioether-functionalized NHC ligands"
Dalton Trans. 2018, 47,17134-17145.

"Displacement of ?5-cyclopentadienyl ligands from half-sandwich C,C-(NHC-cyanoalkyl)-Ni(II) metallacycles: further insight into the structure of the resulting Cp-free Ni acycles and a catalytic activity study."
Dalton Trans 2018, 47, 1535-1547.

"Ni(II) complexes of highly ?-donating cyclic (alkyl)(amino)- and malonate-carbenes: syntheses and catalytic studies."
Organometallics 2017, 36, 1113-1121.

"Ni N-heterocyclic carbene-catalyzed C–heteroatom bond formation, reduction, and oxidation: reactions and mechanistic aspects."
ACS Catalysis 2016, 5, 890-906.

~Coffee/tea will be served prior to lecture~

Location CCB 4217
Hosted by Professor Alan Goldman