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l-Argininium(+) maleate(−) dihydrate

✍ Scribed by Sun, Zhi-Hua ;Yu, Wen-Tao ;Fan, Jian-Dong ;Xu, Dong ;Wang, Xin-Qiang


Publisher
International Union of Crystallography
Year
2007
Tongue
English
Weight
167 KB
Volume
63
Category
Article
ISSN
1600-5368

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Á2NO 3 À , the diprotonated argininium molecule is linked by a strong OÐHÁ Á ÁO [2.653 (7) A Ê ] hydrogen bond to the nitrate anion. The singlebonded O atom of the carboxyl group exhibits a very unusual cis conformation with respect to the -amino N atom. Chelated three-centered hydrogen bonds are ob

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In the title compound, C~6~H~16~N~4~O~2~ ^+^·C~2~F~3~O~2~ ^−^, the amino acid exists as a zwitterionic argininium cation, with positively charged amino and guanidinium groups and a negatively charged carboxylate group. The trifluoroacetic acid molecule is deprotonated. The stoichiometry between the

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The title compound, (C 6 H 15 N 4 O 2 ) 3 ÁCrF 6 Á3H 2 O, is isostructural with the vanadium analogue. One of the argininium cations is partially disordered over two different conformations. A complex network of N-HÁ Á ÁO, N-HÁ Á ÁF, O-HÁ Á ÁO and O-HÁ Á ÁF hydrogen bonds supports the structure.