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X-WR-CALNAME:Inorganic Chemistry Student Seminar: Lily Wang (Radosevich Gro
 up)
X-WR-TIMEZONE:Eastern Time (US & Canada)
BEGIN:VEVENT
DTSTAMP:20260617T073208Z
UID:tag:localist.com\,2008:EventInstance_52815195457596
DTSTART:20260506T200000Z
DTEND:20260506T220000Z
DESCRIPTION:Accessing Palladaphosphoranes via Nonspectator Behaviors of a S
 tructurally Constrained P(III) Ligand\n\n \n\nTricoordinate phosphorus lig
 ands (𝜎3-P) are fundamental to palladium chemistry\, typically function
 ing as steric and electronic modulators while remaining chemically inert d
 uring palladium-catalyzed transformations. Nonetheless\, sporadic reports 
 have revealed substituent scrambling between Pd and 𝜎3-P ligands\, indi
 cating additional metal-phosphorus interaction beyond the donor-acceptor r
 elationship. In addition to lower-coordinate palladium-phosphido (Pd-(𝜎
 2-P)) intermediates\, the involvement of higher-coordinate intermediates\,
  palladaphosphoranes (Pd-(𝜎4-P))\, has also been suggested for such pro
 cesses. However\, direct observation of Pd-(𝜎4-P) complex from group mi
 gration between Pd and P is rare\, potentially due to their transient natu
 re. To investigate intermediate-like structures of group migration between
  Pd and P\, a structurally constrained\, tridentate 𝜎3-P ligand was emp
 loyed to stabilize Pd-(𝜎4-P) structures. Geometric tuning of the 𝜎3-
 P site has been shown to promote nonspectator reactivity\, including inser
 tion and addition reactions of 𝜎3-P ligands with transition metal-ligan
 d bonds. This approach enables the exploration of group migration between 
 transition metals and phosphorus\, providing new insights into the reactiv
 ity landscape of 𝜎3-P ligands. \n\nIn this presentation\, the following
  will be discussed: (1) Migration of alkyl\, aryl\, and alkynyl ligands fr
 om Pd(II) oxidative addition complexes to a 𝜎3-P ligand. (2) Migration 
 of alkyl groups from Pd(II) dialkyl compounds to a 𝜎3-P ligand. (3) Str
 uctural and spectroscopic analysis of palladaphosphoranes. (4) Experimenta
 l and computational mechanistic insights of hydrocarbyl group migration be
 tween Pd(II) and 𝜎3-P ligands.\n\n \n\nLily Wang is a 4th-year Ph.D. ca
 ndidate in the Radosevich Lab. She earned her B.Sc. in Chemistry from the 
 Hong Kong University of Science and Technology\, where she worked on redox
 -active Ce(IV) complexes with Kläui tripodal ligands. Lily joined Prof. A
 lex Radosevich’s Lab in the fall of 2022. Her research focuses on synthe
 sizing late transition metal complexes with structurally constrained P(III
 ) ligands and probing their reactivity to discover novel metal-phosphorus 
 cooperativities.
GEO:42.358262;-71.090045
LOCATION:Building 4\, 370
SUMMARY:Inorganic Chemistry Student Seminar: Lily Wang (Radosevich Group)
URL;VALUE=URI:https://calendar.mit.edu/event/inorganic-chemistry-student-se
 minar-lily-wang-radosevich-group
CATEGORIES:Conferences/Seminars/Lectures
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