Presentation Title

Synthesis and characterization of cobalt nitrosyl complexes with bidentate N-heterocyclic carbene ligands

Faculty Mentor

Chantal Stieber

Start Date

18-11-2017 9:30 AM

End Date

18-11-2017 9:45 AM

Location

9-263

Session

Physical Sciences 3

Type of Presentation

Oral Talk

Subject Area

physical_mathematical_sciences

Abstract

Carbon dioxide (CO2) is oftentimes a focus for pollution remediation, however, lesser known pollutants such as nitrogen oxides (NOx) pose a similar threat. While biological cycles convert NOx into less harmful inert gases, the conversion is not carried out at a high enough rate to diminish atmospheric levels to a favorable level and the mechanism is unknown. This project aimed to synthesize cobalt metal complexes that have the capability to react with NOx species as alternatives to biological NOx reduction with nitrous oxide reductase. New cobalt complexes with bidentate N-heterocyclic carbene (NHC) ligands were synthesized and reacted with NO+. The complexes were characterized by infrared (IR), Raman, UV-vis, and X-ray absorption spectroscopy to determine if and how NO was bonded to the cobalt center. The IR stretching frequencies show strong agreement with other NO complexes, providing evidence for formation of a Co-NO bond and new cobalt nitrosyl complexes. The long-term goal of this project is to utilize the new cobalt complexes to incorporate NOx species into new chemical products.

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Nov 18th, 9:30 AM Nov 18th, 9:45 AM

Synthesis and characterization of cobalt nitrosyl complexes with bidentate N-heterocyclic carbene ligands

9-263

Carbon dioxide (CO2) is oftentimes a focus for pollution remediation, however, lesser known pollutants such as nitrogen oxides (NOx) pose a similar threat. While biological cycles convert NOx into less harmful inert gases, the conversion is not carried out at a high enough rate to diminish atmospheric levels to a favorable level and the mechanism is unknown. This project aimed to synthesize cobalt metal complexes that have the capability to react with NOx species as alternatives to biological NOx reduction with nitrous oxide reductase. New cobalt complexes with bidentate N-heterocyclic carbene (NHC) ligands were synthesized and reacted with NO+. The complexes were characterized by infrared (IR), Raman, UV-vis, and X-ray absorption spectroscopy to determine if and how NO was bonded to the cobalt center. The IR stretching frequencies show strong agreement with other NO complexes, providing evidence for formation of a Co-NO bond and new cobalt nitrosyl complexes. The long-term goal of this project is to utilize the new cobalt complexes to incorporate NOx species into new chemical products.