LVACS Section Meeting Tuesday, April 8th
University Center, DeSales University
Undergraduate Research Poster Symposium
**DEADLINE FOR POSTER ABSTRACTS EXTENDED TO APRIL 1st**
Speaker: Jonathan Kuo, Penn State
Ligands for (Dicationic Group 10) Lewis Acids
Transition metal/ligand complexes activate organic molecules through a combination of bonding and backbonding interactions (the Dewar-Chatt-Duncanson Model). Metal/ligand complexes can therefore be viewed on a continuum between Lewis basic (more backbonding) to Lewis acidic (more bonding). In this talk, we will discuss activation modes at the Lewis acidic extreme. For example, coordination of H2 to a dicationic {PtII}2+ complex MeCN results in acidification by greater than 56 pKa units. However, accessing the Lewis acidic extreme has been challenging because supporting ligands are Lewis bases; association of any ligand tempers the Lewis acidity of the transition metal ion. Thus, new concepts in ligand design are needed to reliably access the electrophilic extreme. Our talk will disclose our “shapeshifting” metal/ligand complexes. These complexes rapidly equilibrate between a more nucleophilic (charge separated) state AND a more electrophilic (charge localized) state, representing an alternative strategy for accessing Lewis acidic metal complexes.
Jonathan L. Kuo, Ph.D. is an Assistant Professor at The Pennsylvania State University. Previously, he was an NIH sponsored Postdoctoral Fellow at the University of Pennsylvania. He earned his doctorate from Columbia University and his B.S. from the University of California, Los Angeles. Dr. Kuo is interested in developing transition metal catalyzed processes that approach perfect atom economy. Examples include oxidations which use O2, or reductions which use H2. Many of these transformations involve careful consideration of how to choreograph the movement of protons and electrons around a transition metal ion in a controlled fashion.
4:30-6:00pm Poster Symposium: Trexler Room
Social Hour Menu: Cheese and Fruit Display, Crisp Crudities Platter with soda and water
6:00-9:00 Dinner, Meeting and Talk: Commonwealth Room
Dinner Menu: Pasta Buffet Dinner with vegetarian option and dessert.
($20 for members, $10 for students/retired/unemployed)
RSVP (to submit an abstract or just attend)
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CONTACT: Sara Hayik, sara.hayik@desales.edu
See Awards page for a complete listing of all LVACS awards.
The Lehigh Valley Section of the American Chemical Society was the fifth local ACS section to be chartered. Founded in 1894, it serves the Lehigh Valley Area including six counties in Pennsylvania (Monroe, Northampton, Lehigh, Schuylkill, Berks and Carbon) and Warren county in New Jersey. ACS Local Sections promote public awareness of chemistry through community outreach programs. Working with students of chemistry and science, we encourage an interest in the chemical sciences. The LVACS also provides a valuable forum for communication between members and serves as a platform for sharing scientific and educational information.
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