Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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Experimental Barriers to Internal Rotation for C₂H₅NO₃ (Nitric acid, ethyl ester)

Atoms in torsion 1 are 1, 2, 5, 6
The rotor type is CH₂CH₃

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