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The hindered rotation around the C -N-axis of 2-aminomethylen-,3-indandiones 1 - 6 was investigated by NMR-spectroscopy at variable temperatures. The conformation of the compounds is discussed.

zeitschrift für naturforschung b

Untersuchungen zur Temperaturabhängigkeit charakteristischer IR- und NMR-Absorptionen, XV: Zur Rotationshemmung von N-substitutierten 2-Aminomethylen-1.3-indandionen / The Hindered Rotation of TV-substituted 2-Aminom ethylen-,3-indandiones