{"91061":{"#nid":"91061","#data":{"type":"event","title":"(11-0428) Prof. Larry Que, University of Minnesota","body":[{"value":"\u003Cp\u003EProf. Larry Que, University of Minnesota\n\u003C\/p\u003E\n\u003Cp\u003EHydrocarbon oxidations by bio-inspired nonheme iron catalysts\n\u003C\/p\u003E\n\u003Cp\u003ESchool Colloquia\n\u003C\/p\u003E\n\u003Cp\u003EInspired by the versatile oxidation chemistry catalyzed by nonheme iron enzymes, we have been investigating the iron-catalyzed oxidations of hydrocarbons. Highly stereoselective conversions of olefins to epoxides and\/or cis-diols have been observed with the use of Fe(N4)(OTf)\u003Csub\u003E2\u003C\/sub\u003E complexes where N4 is a tetradentate ligand with four nitrogen donor sites such as TPA (TPA = tris(2-pyridylmethyl)amine) and BPMEN (BPMEN = N,N\u00e2\u0080\u0099-bis(2-pyridylmethyl)-N,N\u00e2\u0080\u0099-dimethyl-1,2-diaminothane). Insights into the catalytic mechanism have been obtained from a combination of product distribution studies, \u003Csup\u003E18\u003C\/sup\u003EO labeling experiments, spectroscopic characterization of intermediates trapped at low temperature, and DFT calculations. These results implicate an Fe\u003Csup\u003EV\u003C\/sup\u003E=O oxidant. In a related study, hydrocarbon oxidation is observed for a biomimetic iron complex that reacts with O\u003Csub\u003E2\u003C\/sub\u003E. The shape selectivity observed for this reaction is quite unusual, suggesting that substrate recognition can be elicited even in a relatively simple model complex.\n\u003C\/p\u003E\n\u003Cp\u003EFor more information contact \u003Ca href=\u0022mailto:jake.soper@chemistry.gatech.edu\u0022\u003EProf. Jake Soper\u003C\/a\u003E (404-894-4022).\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"Prof. Larry Que, University of Minnesota\n\nHydrocarbon oxidations by bio-inspired nonheme iron catalysts\n\nSchool Colloquia","format":"limited_html"}],"field_summary_sentence":[{"value":"Prof. Larry Que, University of Minnesota"}],"uid":"27275","created_gmt":"2010-01-22 01:00:00","changed_gmt":"2016-10-08 01:48:32","author":"Shirley Tomes","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2011-04-28T17:00:00-04:00","event_time_end":"2011-04-28T18:00:00-04:00","event_time_end_last":"2011-04-28T18:00:00-04:00","gmt_time_start":"2011-04-28 21:00:00","gmt_time_end":"2011-04-28 22:00:00","gmt_time_end_last":"2011-04-28 22:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"related_links":[{"url":"http:\/\/www.chem.umn.edu\/directory\/faculty.lasso?serial=462","title":"Prof. Larry Que, University of Minnesota"}],"groups":[{"id":"85951","name":"School of Chemistry and Biochemistry"}],"categories":[],"keywords":[{"id":"1809","name":"physical chemistry"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1795","name":"Seminar\/Lecture\/Colloquium"}],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cstrong\u003EShirley Tomes\u003C\/strong\u003E\u003Cbr \/\u003EChemistry \u0026amp; Biochemistry\u003Cbr \/\u003E\u003Ca href=\u0022http:\/\/www.gatech.edu\/contact\/index.html?id=st81\u0022\u003EContact Shirley Tomes\u003C\/a\u003E\u003Cbr \/\u003E\u003Cstrong\u003E404-894-0591\u003C\/strong\u003E","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}