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|
|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|
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