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S,S′-(But-2-yne-1,4-diyl)bis(l-cysteine) monohydrate

✍ Scribed by Shi, Yun-Mei ;Zhang, Wen-Qin

Book ID: 104479933
Publisher: International Union of Crystallography
Year: 2002
Tongue: English
Weight: 445 KB
Volume: 58
Category: Article
ISSN: 1600-5368
DOI: 10.1107/s1600536802021487

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✦ Synopsis

In the title compound, C 10 H 16 N 2 O 4 S 2 ÁH 2 O, both the (but-2yne-1,4-diyl)bis(l-cysteine) moieties and the water molecule lie on crystallographic twofold axes. As a result of this symmetry, the two cysteine moieties (zwitterions), which are separated by the linear but-2-yne-1,4-diyl moiety, have exactly the same conformation. The conformation is characterized by the S atoms being anti to carboxyl groups and gauche to the protonated amino groups. There are hydrogen bonds which connect the structure in three dimensions.

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✦ Synopsis

S,S′-(But-2-yne-1,4-diyl)bis(l-cysteine) monohydrate