Mixed salts of amino acids: L-histidinium(+) L-histidinium(2+) nitrate-hexafluorosilicate
- Autor(en)
- V. V. Ghazaryan, Michel Fleck, A.M. Petrosyan
- Abstrakt
Single crystals of the mixed salt L-histidinium(+) L-histidinium(2+) nitrate-hexafluorosilicate have been obtained from aqueous solution and characterized structurally and by infrared and Raman spectroscopy. The title salt crystallizes in the monoclinic system (space group P21, Z = 2). The asymmetric unit contains L-histidinium(+) and L-histidinium(2+) cations as well as nitrate and hexafluorosilicate anions. L-histidinium(+) and L-histidinium(2+) cations form short hydrogen bond with an O?O distance equal to 2.507(2) Å, thus forming a (L-His+L-His+) dimeric cation, therefore the formula is correctly given as View the MathML source. This is the first observation of the (L-His+L-His+) dimeric cation. The presence of the O-HO hydrogen bond of the (L-His+L-His2+) dimeric cation is reflected in the infrared spectrum as a broad absorption band centered at ca. 1300 cm-1 caused by stretching vibration of O-H bond.
- Organisation(en)
- Institut für Mineralogie und Kristallographie
- Externe Organisation(en)
- National Academy of Sciences of the Republic of Armenia
- Journal
- Journal of Molecular Structure
- Band
- 1026
- Seiten
- 140-144
- Anzahl der Seiten
- 5
- ISSN
- 0022-2860
- DOI
- https://doi.org/10.1016/j.molstruc.2012.05.052
- Publikationsdatum
- 2012
- Peer-reviewed
- Ja
- ÖFOS 2012
- 105113 Kristallographie, 104015 Organische Chemie
- Schlagwörter
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/67c3639c-1698-4c41-bb46-c567796ed810