Michael L. Neidig

Michael L. Neidig

Wilmot Assistant Professor of Chemistry

Ph.D. 2007, Stanford University

Physical-Inorganic Chemistry and Catalysis

Professor Neidig’s research interests fall within the areas of organometallic chemistry and non-precious metal catalysis in organic synthesis. At the core of research in the Neidig group is a novel experimental approach using inorganic spectroscopies, density functional theory and synthesis combined with kinetic studies to develop molecular-level insight into electronic structure and bonding in non-precious metal organometallic complexes, active catalyst structure and the mechanisms involved in current leading-edge non-precious metals catalyzed reactions in organic synthesis.

One major effort in the Neidig group focuses on iron-catalyzed cross-coupling reactions, where a growing body of research has demonstrated that iron can be an excellent catalyst, effecting cross-couplings that have proven difficult for platinum group metals such as the coupling of alkyl halides and Grignard reagents with both high activity and selectivity. As a representative example, in the area of iron-bisphosphines we have established that a combination of Mössbauer, MCD and DFT methods was demonstrated to be a highly impactful methodology for the investigation of the iron-catalyzed Kumada coupling of MesMgBr and primary alkyl halides. For example, these studies permitted the identification of the active catalyst species, insight into the effects of the reaction protocol on in-situ iron speciation and catalytic performance and direct insight into the molecular-level mechanism of catalysis.

In another major effort, the Neidig group is studying the active catalyst species and mechanisms involved in iron- and cobalt-catalyzed direct C-H functionalization reactions. In this chemistry, we utilize an approach combining multiple inorganic spectroscopies (magnetic circular dichroism, Mössbauer, electron paramagnetic resonance, resonance Raman), density functional theory, synthesis and kinetic and reaction studies in order to elucidate detailed electronic structure and bonding insight in iron- and cobalt-organometallics involved in these reactions. Ultimately, the development of such fundamental insight into structure, bonding and mechanism in iron- and cobalt-catalyzed direct C-H functionalization is critical to inspire and facilitate the rational design and development of systems with improved catalytic performance.

Selected Publications

Fillman, K. L.; Przyojski, J. A.; Al-Afyouni, M. H.; Tonzetich, Z.; Neidig, M. L.  "A combined magnetic circular dichroism and density functional theory approach for the elucidation of electronic structure and bonding in three- and four-coordinate iron(II)-N-heterocyclic carbene complexes,"  Chem Sci.  201561178-1188.
Al-Afyouni, M. H.; Fillman, K. L.; Brennessel, W. W.; Neidig, M. L.  "Isolation and characterization of a tetramethyliron(III) ferrate: An intermediate in the reduction pathway of ferric salts with MeMgBr,"  J. Am. Chem. Soc.  201413615457-15460.
Bedford, R. B.; Brenner, P. B.; Carter, E.; Clifton, J.; Cogswell, P. M.; Gower, N. J.; Haddow, M. F.; Harvey, J. N.; Kehl, J. A.; Murphy, D. M.; Neeve, E. C.; Neidig, M. L.; Nunn, J.; Snyder, B. E. R.; Taylor, J.  "Iron-phosphine catalyzed cross-coupling of tetraorganoborates and related group 13 nucleophiles with alkyl halides,"  Organometallics  2014335767-5780.
Mo, Z.; Ouyang, Z.; Wang, L.; Fillman, K. L.; Neidig, M. L.; Deng, L.  "Two- and three coordinate formal iron(I) compounds featuring monodentate aminocarbene ligands,"  Org. Chem. Front.  201411040-1044.
Daifuku, S. L.; Al-Afyouni, M. H.; Snyder, B. E. R.; Kneebone, J. L.; Neidig, M. L.  "A combined Mössbauer, magnetic circular dichroism and density functional theory approach for iron cross-coupling catalysis: Electronic structure, in situ formation and reactivity of iron-mesityl-bisphosphines,"  J. Am. Chem. Soc.  20141369132-9143.
Fillman, K. L.; Bielinski, E. A.; Schmeier, T. J.; Nesvet, J. C.; Woodruff, T. M.; Pan, C. J.; Takase, M. K.; Hazari, N.; Neidig, M. L.  "Flexible binding of PNP pincer ligands to monomeric iron complexes,"  Inorg. Chem.  2014536066-6072.
Zell, T.; Milko, P.; Fillman, K. L.; Diskin-Posner, Y.; Bendikov, T.; Iron, M. A.; Leitus, G.; Ben-David, Y.; Neidig, M. L.; Milstein, D.  "Iron dicarbonyl complexes featuring bipyridine-based PNN pincer ligands with short interpyridine C-C bond lengths: Innocent or non-innocent ligand?,"  Chem. Eur. J.  2014204403-4413.
Dunsford, J. J.; Cade, I. A.; Fillman, K. L.; Neidig, M. L.; Ingleson, M. J.  "Reactivity of (NHC)2FeX2 complexes toward arylborane Lewis acids and arlyboronates,"  Organometallics  201433370-377.
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Professor Neidig's Contact Information...

Office: Hutchison B32
Phone: (585) 276-6006

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