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May 7, 2026The Journal of Physical Chemistry AOpen Access

Six-Fold Methyl Internal Rotation and ¹⁴ N Nuclear Quadrupole Coupling in the Microwave Spectra of N -Methylmaleimide and N -Methylsuccinimide

Safa Khemissi Chisom A. Tiu Isabelle Kleiner Ha Vinh Lam Nguyen Kyle N. Crabtree A. O. Hernandez-Castillo

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Key Points

This research aims to explore the methyl internal rotation and nuclear quadrupole coupling in specific N-heterocycles.
Conducted microwave spectroscopy on N-Methylmaleimide and N-Methylsuccinimide.
Analyzed the effects of electronic environment on torsional barriers and molecular behavior.
Identified the low torsional barrier associated with methyl internal rotation.
Characterized the nuclear quadrupole coupling in studied compounds.

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Implication

Microwave spectroscopy investigates internal rotation and coupling effects in methyl derivatives, indicating molecular behavior.

Abstract

electronic environment, thereby lowering the torsional barrier.

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Cite This Study

Khemissi et al. (2026) studied this question.

synapsesocial.com/papers/69fed153b9154b0b828789cf https://doi.org/10.1021/acs.jpca.6c00554

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