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Demyan Prokopchuk

Chemistry Weekly Seminar - Demyan Prokopchuk, Rutgers University-Newark

Demyan Prokopchuk, Assistant Professor in the Department of Chemistry, Rutgers University - Newark will present a seminar at 1:30 pm in Thorvaldson 159.



Ligand Based C-H Bond Weakening for Synthesis and Electrocatalysis with Earth-Abundant Metals


The selective, efficient, and sustainable activation of carbon-hydrogen bonds continues to be a critical area of research. Current synthetic methodologies heavily rely on transition metal catalysts to mediate the reactivity of C-H bonds for making medicines, fuels, agrochemicals, and materials. Broadly speaking, we are interested in leveraging C-H bonds housed within chelating ligand frameworks to understand the fundamentals of C-H activation and discover new (electro)catalytic transformations. We have used an amine-rich cyclopentadienyl ligand (CpN3) coordinated to iron, which facilitates electrocatalytic H2 production in the presence of exogenous acid. Although Cp ligands are classically viewed as unreactive “spectator” ligands, the H2 production mechanism involves a crucial stereoselective endo-CpN3 protonation step followed by ligand-to-metal proton transfer. In a separate endeavor, we are interested in understanding the magnitude of C(sp3)-H bond weakening when an alkane moiety interacts with a transition metal (i.e., agostic interactions). To achieve this goal, we use diamondoid pincer ligands coordinated to Ni and Pd, which provide unique insights into the thermochemical requirements for C-H activation with unactivated alkanes. Recent results in these areas of research will be presented.

Date:    Friday, March 1

Time:    1:30 pm

Place:    Thorvaldson 159