Acta Crystallographica Section B

Structural Science

Volume 62, Part 4 (August 2006)

research papers

Acta Cryst. (2006). B62, 606-611 [ doi:10.1107/S0108768106013887 ]

Structures of (S)-(-)-4-oxo-2-azetidinecarboxylic acid and 3-azetidinecarboxylic acid from powder synchrotron diffraction data

A. J. Mora, M. Brunelli, A. N. Fitch, J. Wright, M. E. Báez and F. López-Carrasquero

Abstract: 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.

Keywords: powder diffraction; structural solution; heterocycles; antibiotics; asymmetry; hydrogen bonding.


	Rietveld powder data file (CIF format) (501.1 kbytes) [ doi:10.1107/S0108768106013887/av5050Isup2.rtv ] Contains datablock I

	Rietveld powder data file (CIF format) (351.5 kbytes) [ doi:10.1107/S0108768106013887/av5050IIsup4.rtv ] Contains datablock II

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