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Crystal data for d ‐methionine CH 3 SCH 2 CH 2 CH(NH 2 )COOH and d ‐tyrosine HOC 6 H 4 CH 2 CH(NH 2 )COOH
Author(s) -
Khawas B.
Publication year - 1986
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889886089148
Subject(s) - orthorhombic crystal system , monoclinic crystal system , methionine , crystallography , crystal structure , chemistry , x ray crystallography , tyrosine , space group , stereochemistry , diffraction , amino acid , physics , biochemistry , optics
d ‐Methionine and d ‐tyrosine, crystallized from water as microcrystals, were studied by applying the techniques of X‐ray powder diffractometry. d ‐methionine is monoclinic with a = 15.189(4), b = 10.298(3), c = 9.435(3) Å, β = 92°28 (1)′, Z = 8, D m = 1.325(5), D x = 1.343 Mg m −3 , V = 1474(1) Å 3 , and space group P 2 1 . d ‐Tyrosine is orthorhombic with a = 20.716(6), b = 13.736(4), c = 5.842(2) Å, Z = 8, D m = 1.425(5), D x = 1.447 Mg m −3 , V = 1662(2) Å 3 and space group P 2 1 22. The JCPDS Diffraction File Nos. are: 37‐1997 for d ‐tyrosine; 37‐1998 for d ‐methionine.