Presentation Title

Synthesis and Characterization of Nickel Complexes for Catalysis

Presenter Information

Briana ArreagaFollow

Faculty Mentor

Dr. S. Chantal E. Stieber

Start Date

17-11-2018 12:30 PM

End Date

17-11-2018 2:30 PM

Location

CREVELING 73

Session

POSTER 2

Type of Presentation

Poster

Subject Area

physical_mathematical_sciences

Abstract

Many catalysts used in the making pharmaceuticals and fine chemicals are comprised of rhodium, iridium, ruthenium, and palladium. However, these elements are precious transition metals, which are oftentimes expensive and not very Earth abundant. This has resulted in research into using earth-abundant metals as catalysts. The first row transition metals, including iron and nickel are more prevalent and less costly than many metals currently used in catalysis. Nickel complexes bound to bidentate N-heterocyclic carbene (NHC) ligands were synthesized. The NHC ligands were made by synthesizing mesitylimidazole and using it to make a bis(imidazolium)salt ligand precursor, [MesNHC2Me][Br]2. Following addition of KHMDS base, the free ligand was reacted with Ni(COD)2 to form the nickel complex, (MesNHC2Me)Ni(COD), which was recently reported by our group and crystallographically characterized. The complex was characterized by 1H NMR and 13C NMR. Nickel complexes, such as this, may be cost effective catalysts for a variety of chemical transformations.

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Nov 17th, 12:30 PM Nov 17th, 2:30 PM

Synthesis and Characterization of Nickel Complexes for Catalysis

CREVELING 73

Many catalysts used in the making pharmaceuticals and fine chemicals are comprised of rhodium, iridium, ruthenium, and palladium. However, these elements are precious transition metals, which are oftentimes expensive and not very Earth abundant. This has resulted in research into using earth-abundant metals as catalysts. The first row transition metals, including iron and nickel are more prevalent and less costly than many metals currently used in catalysis. Nickel complexes bound to bidentate N-heterocyclic carbene (NHC) ligands were synthesized. The NHC ligands were made by synthesizing mesitylimidazole and using it to make a bis(imidazolium)salt ligand precursor, [MesNHC2Me][Br]2. Following addition of KHMDS base, the free ligand was reacted with Ni(COD)2 to form the nickel complex, (MesNHC2Me)Ni(COD), which was recently reported by our group and crystallographically characterized. The complex was characterized by 1H NMR and 13C NMR. Nickel complexes, such as this, may be cost effective catalysts for a variety of chemical transformations.