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l-Arginine nitrates

✍ Scribed by S.S. Terzyan; H.A. Karapetyan; R.B. Sukiasyan; A.M. Petrosyan

Publisher: Elsevier Science
Year: 2004
Tongue: English
Weight: 217 KB
Volume: 687
Category: Article
ISSN: 0022-2860
DOI: 10.1016/j.molstruc.2003.09.015

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✦ Synopsis

In the L-Arg þ HNO 3 þ H 2 O system, where Arg stands for arginine

and L-Arg•2HNO 3 (II) compounds have been produced. The structures of both compounds were solved by X-ray crystallography. The asymmetric part of the triclinic unit cell (space group P1) of the (I) compound contains two monocharged arginine cations (Arg þ ), two nitrate ions and a water molecule interacting through hydrogen bonds. The monoclinic unit cell of the (II) compound (space group P2 1 ) is composed of two crystallographically independent nitrate ions and one doubly charged arginine cation hydrogen bonded to nitrate groups. The Arg þ cations are hydrogen bonded to each other, while the Arg 2þ cations do not interact. In addition the crystal of compound (II) emits phase matched second harmonic generation signal of a Nd:YAG laser.

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