is composed of two crystallographically independent methionine residues and a picrate anion. The methionine and protonated methioninium residues are bonded through a strong O-HÁ Á ÁO hydrogen bond, and an inversion-related dl1 head-to-tail sequence along the a axis is observed in the zwitterion. The
β-dl-Methionine at 105 K
✍ Scribed by Alagar, M. ;Krishnakumar, R. V. ;Mostad, A. ;Natarajan, S.
- Publisher
- International Union of Crystallography
- Year
- 2005
- Tongue
- English
- Weight
- 268 KB
- Volume
- 61
- Category
- Article
- ISSN
- 1600-5368
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✦ Synopsis
In the title compound, C 5 H 11 NO 2 S, the conformation of the terminal methyl C atom with respect to the -C atom is trans. The crystal structure is stabilized by a network of characteristic head-to-tail dl1 and dl2 sequences.
📜 SIMILAR VOLUMES
DL-Methionine [C 5 H 11 NO 2 S] is one of the essential amino acids in humans. It has two crystalline forms, viz., α-and β-methionine. In the present study, βform is crystallized in silica gel under suitable pH conditions by single diffusion method. The grown crystals were characterized by density m
Single-crystal X-ray study T = 105 K Mean '(C±C) = 0.001 A Ê R factor = 0.031 wR factor = 0.081 Data-to-parameter ratio = 43.7 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
Single-crystal X-ray study T = 123 K Mean '(C±C) = 0.003 A Ê R factor = 0.029 wR factor = 0.092 Data-to-parameter ratio = 20.7 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.