Experimental and Theoretical Approaches to Inorganic Spin Chemistry

Electron paramagnetic resonance (EPR) is employed in investigating inorganic spin chemistry related phenomena. Steady state electron paramagnetic resonance (SSEPR) was used to explore the electron-electron exchange interaction (J) in alkyne-bridged multi[copper(II) porphyrin] species. A simulation routine was developed to calculate the effects of J and the modulation of J on the SSEPR spectra. Spin trapping is used to trap and identify ethyl radicals formed from the photoexcitation of alkyl-cobalamin. These cobalamins are augmented with fluorophores to show efficient photolysis at wavelengths as long as 777 nm when exciting the fluorophore. These cobalamins can serve as photoinitiators for hydrogel polymerization in medical use. The proton coupled electron transfer (PCET) reaction of [RuII(bpy)2(bpz)]2+ with hydroquinone is investigated by time resolved EPR (TREPR). The TREPR spectrum confirms the presence of a triplet intermediate and reveals the effect of electron donating and withdrawing groups on polarization mechanism.Doctor of Philosoph