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SUMMARY:New Tricks for Iron-Ligand Multiple Bonds in Catalysis
LOCATION:Chemistry A101
TZID:America/Denver
DTSTART:20261027T160000
UID:2026-10-21-03-51-44@natsci.colostate.edu
DTSTAMP:20261021T035144
Description:Seminar Abstract:\n\nThe catalytic activity of late metal imido
  and oxo complexes is commonly associated with two electron atom/group tra
 nsfer reactions. We have found that the strongly donating bis(carbene)bora
 te ligand platform expands the scope of iron imido and oxo chemistry\, lea
 ding to new roles for these ligands in catalysis. In one example\, the hig
 h spin (S = 2) state of an anionic iron(II) imido complex attenuates the i
 ron-nitrogen multiple bond character\, helping to create an unusually elec
 trophilic imido ligand that has reactivity patterns akin to those of early
  transition metals. This complex is active in redox-neutral reactions that
  involve the cooperative action of iron and imido ligand\, which enable ca
 talysis involving bond rearrangement and isotope exchange reactions. For p
 yridine substrates\, the regioselectivity of H/D exchange is dictated by t
 he counter cation. In a second example\, we observe O atom insertion from 
 oxygen atom donors into the Fe-C bonds of low-coordinate organometallic co
 mplexes. This stoichiometric reactivity provides a foundation for the cata
 lytic synthesis of phenols. Experimental and computational investigations 
 implicate a mechanism involving rate-determining oxygen atom insertion int
 o the Fe-C bond from an iron(IV) oxo intermediate. By contrast\, analogous
  S and Se atom insertion catalysis does not involve a high valent intermed
 iate.\n\nSpeaker Bio:\n\nJeremy M. Smith was raised in Benoni\, South Afri
 ca. He completed both undergraduate and graduate studies at the University
  of the Witwatersrand (Johannesburg)\, where he obtained his Ph.D. in orga
 nometallic chemistry under the supervision of Neil J. Coville. Following s
 tints with Russell P. Hughes (Dartmouth College) and Patrick L. Holland (U
 niversity of Rochester)\, he started his independent career at New Mexico 
 State University in 2003. He moved to Indiana University in 2013\, where h
 e is currently Professor of Chemistry. His research interests center on sy
 nthetic inorganic chemistry as applied to fundamental questions in structu
 re and bonding\, organometallic catalysis and electrocatalysis. 4:00 pm
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