Structures of (S)-(-)-4-oxo-2-azetidinecarboxylic acid and 3-azetidinecarboxylic acid from powder synchrotron diffraction data.
The crystal structures of the four-membered heterocycles (S)-(-)-4-oxo-2-azetidinecarboxylic acid (I) and 3-azetidinecarboxylic acid (II) were solved by direct methods using powder synchrotron X-ray diffraction data. The asymmetry of the oxoazetidine and azetidine rings is discussed, along with the hydrogen bonding.
Mora
Asiloé J
AJ
Departamento de Química, Facultad de Ciencias, Universidad de Los Andes, Mérida 5101, Venezuela. asiloe@ula.ve
Brunelli
Michela
M
Fitch
Andrew N
AN
Wright
Jonathan
J
Báez
Maria E
ME
López-Carrasquero
Francisco
F