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L-Arginyl-L-Glutamic Acid Dihydrate, C11h21n5o5.2h2o

Pandit, J and Seshadri, TP and Viswamitra, MA (1983) L-Arginyl-L-Glutamic Acid Dihydrate, C11h21n5o5.2h2o. In: Acta Crystallographica Section C-Crystal Structure Communications, 39 (Dec). 1669- 1672.

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M r = 339.35, monoclinic, P2 t, a = 11.028 (2), b=9.583 (2), c= 16.010 (2) A, fl= 96.57 (1) °, U= 1680.85 A 3, Z = 4, D m = 1.37, D x= 1.34 Mg m -3, Cu Ka, 2 = 1.54184 A, p = 0.85 mm -1, F(000)=728, T=300K, R=0.085 for 2845 diffractometer- measured reflections IF o > 3cr(Fo)]. The two molecules in the asymmetric unit have similar conformations except for a static disorder at the C ~ and C ~ positions in one of the glutamic-acid side chains. An interesting feature of the crystal structure is a pair of hydrogen bonds between the guanidinium and ycarboxylate groups of neighbouring molecules. This is the first such specific interaction observed between side chains of arginine and glutamic acid.

Item Type: Journal Article
Publication: Acta Crystallographica Section C-Crystal Structure Communications
Publisher: International Union of Crystallography
Additional Information: Copyright of this article belongs to International Union of Crystallography
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 27 Aug 2009 06:58
Last Modified: 19 Sep 2010 05:31
URI: http://eprints.iisc.ac.in/id/eprint/20073

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