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Directing isomerization reactions of cumulenes with electric fields

Journal Article · · Nature Communications
Electric fields have been proposed as having a distinct ability to catalyze chemical reactions through the stabilization of polar or ionic intermediate transition states. Although field-assisted catalysis is being researched, the ability to catalyze reactions in solution using electric fields remains elusive and the understanding of mechanisms of such catalysis is sparse. Here we show that an electric field can catalyze the cis-to-trans isomerization of [3]cumulene derivatives in solution, in a scanning tunneling microscope. We further show that the external electric field can alter the thermodynamics inhibiting the trans-to-cis reverse reaction, endowing the selectivity toward trans isomer. Using density functional theory-based calculations, we find that the applied electric field promotes a zwitterionic resonance form, which ensures a lower energy transition state for the isomerization reaction. The field also stabilizes the trans form, relative to the cis, dictating the cis/trans thermodynamics, driving the equilibrium product exclusively toward the trans.
Research Organization:
Columbia Univ., New York, NY (United States); Columbia University, New York, NY (United States)
Sponsoring Organization:
Columbia University; National Science Foundation (NSF); Shanghai University of Electric Power; USDOE; USDOE Office of Science (SC)
Grant/Contract Number:
SC0019440
OSTI ID:
1624197
Alternate ID(s):
OSTI ID: 2202968
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 10; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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