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Inspired by oxidative enzymatic processes in living systems, chemists have performed extensive studies of catalytic methods that mimic those found in biology to generate epoxides more efficiently. Two closely related manganese(II) aminopyridine complexes were synthesized, characterized, and investigated with respect to their catalytic performance on olefin epoxidation. In attempts to improve the ... read moreperformance of manganese catalysts, electron-donating substituents were added to the picolyl arms of the rac-PYBP precursor ligand to produce a novel “super-rich” analog of the chiral PYBP ligand which was hypothesized to better stabilize the metal center of the complex. Crystal structures of the ligands were obtained, and EPR spectra were analyzed to further investigate the structural and electronic reasons for differences in catalytic performance. This project contributes to the body of works related to the field of structure-activity relationships of new inorganic catalysts and advances green chemistry by replacing toxic metal elements and reagents with a biologically benign metal (Mn) and an environmentally-friendly oxidant (H2O2).read less
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