Mixed salts of amino acids with different anions

Mixed salts of amino acids with different anions are of considerable interest from chemical and structural points of view and also as a source of new materials the properties of which can be controlled by appropriate choice of anions. Four such crystals, L-His2+·Cl−·HSO4− (P212121, Z=4), L-Arg2+·NO3...

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Podrobná bibliografie
Vydáno v:	Journal of crystal growth Ročník 362; s. 182 - 188
Hlavní autoři:	Ghazaryan, V.V., Fleck, M., Petrosyan, A.M.
Médium:	Journal Article Konferenční příspěvek
Jazyk:	angličtina
Vydáno:	Amsterdam Elsevier B.V 01.01.2013 Elsevier
Témata:	A2. Growth from solutions Amino acids Anions B1. Amino acids' mixed salts Carboxyl group Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science; rheology Crystal growth Crystal structure Exact sciences and technology Fluorides Growth from solutions Hydrogen bonds Infrared radiation Materials science Methods of crystal growth; physics of crystal growth Organic compounds Physics Structure of solids and liquids; crystallography Structure of specific crystalline solids B1. Amino acids' mixed salts A2. Growth from solutions Crystal growth Hydrogen bonds Hafnium Amino acids Fluorides Infrared spectra Raman spectroscopy Growth from solution
ISSN:	0022-0248, 1873-5002
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Popis
Shrnutí:	Mixed salts of amino acids with different anions are of considerable interest from chemical and structural points of view and also as a source of new materials the properties of which can be controlled by appropriate choice of anions. Four such crystals, L-His2+·Cl−·HSO4− (P212121, Z=4), L-Arg2+·NO3−·ClO4− (δ-form, P21, Z=4), L-Arg2+·F−·NO3− (P1, Z=2), 2L-Arg2+·(F−⋯HF)·3NO3− (P212121, Z=4), have been characterized structurally and by IR and Raman spectra. The hydrogen bond between the carboxyl group and the fluoride ion (2.371(3)Å) in the structure of L-Arg2+·F−·NO3− is among the shortest known O–H⋯F type hydrogen bonds. The O–H⋯F hydrogen bond in the structure of 2L-Arg2+·(F−⋯HF)·3NO3− is even shorter (2.341(2)Å) and thus belongs to the shortest contacts among both Ο–Η⋯F and F–H⋯O types hydrogen bonds. ► Four crystalline amino acid salts with different anions have been obtained. ► Molecular and crystal structures were determined by XRD and vibrational spectroscopy. ► Very short O⋯F type H-bonds were found, two shorter than any previously known.
Bibliografie:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0022-0248 1873-5002
DOI:	10.1016/j.jcrysgro.2011.09.059