Solvent Dependence of Relative Hydricity of Pentamethylcyclopentadienyl Iridium Hydride Complexes
Public Deposited- Last Modified
- February 26, 2019
- Creator
-
Jadrich, Caleb
- Affiliation: College of Arts and Sciences, Department of Chemistry
- Abstract
- Homogeneous catalytic hydrogenation of carbon dioxide (CO2) could prove an efficient method to produce many valuable products. There is evidence which suggests a catalyst’s ability to promote this challenging transformation may be predicted by its hydricity, ΔG°H- (hydride donor ability). However, few studies have sought to discern the solvent dependence of ΔG°H-, despite the dramatic influence solvent can have on catalysis. Using equilibrium reactions, relative hydricities were determined between six [Cp*Ir(bpy-X)H]+ (Cp* is η5–pentamethylcyclopentadienyl; bpy is bipyridine) complexes. From these data, a linear free energy relationship was observed between relative hydricity and the σp- Hammett parameter of the substituent. This relationship suggested that the effect of substitution on hydricity has approximately the same magnitude in acetonitrile and water.
- Date of publication
- spring 2017
- Keyword
- DOI
- Resource type
- Rights statement
- In Copyright
- Note
- Funding: Center for Enabling New Technologies through Catalysis (CENTC)
- Advisor
- Miller, Alexander
- Degree
- Bachelor of Science
- Academic concentration
- Chemistry
- Honors level
- Honors
- Degree granting institution
- University of North Carolina at Chapel Hill
- Graduation year
- 2017
- Language
- English
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