l-Cysteine Halogenides: A New Family of Salts with an l-Cysteine⋯l-Cysteinium Dimeric Cation
Научная публикация
| Общая информация |
Язык:
Английский,
Жанр:
Статья (Full article),
Статус опубликования:
Опубликована,
Оригинальность:
Оригинальная
|
| Журнал |
Journal of Molecular Structure
ISSN: 0022-2860
|
| Вых. Данные |
Год: 2016,
Том: 1121,
Страницы: 60-69
Страниц
: 10
DOI:
10.1016/j.molstruc.2016.05.049
|
| Ключевые слова |
Crystal structure, Dimeric cation, Halogenides, L-cysteine, Short hydrogen bond, Vibrational spectra |
| Авторы |
Ghazaryan V.V.
1
,
Minkov V.S.
2,3
,
Boldyreva E.V.
2,3
,
Petrosyan A.M.
1
|
| Организации |
| 1 |
Institute of Applied Problems of Physics, NAS of Armenia, 25 Nersessyan Str., 0014, Yerevan, Armenia
|
| 2 |
Institute of Solid State Chemistry and Mechanochemistry, SB RAS, 18 Kutateladze Str., Novosibirsk, 630128, Russian Federation
|
| 3 |
REC-008, Novosibirsk State University, 2 Pirogov Str., Novosibirsk, 630090, Russian Federation
|
|
Two l-cysteinium-halogenides with (l-cysteine···l-cysteinium) dimeric cations have been obtained, (l-Cys⋯l-Cys+)·Cl−, and (l-Cys⋯l-Cys+)·Br−. Both salts crystallize in monoclinic space group P21. Although these salts have the same dimeric cations and isotypical halogen anions, crystal packing is different. The main difference between the two salts rests in the conformation of (l-Cys⋯l-Cys+) dimeric cation, which also differs from that of the dimeric cation in the previously reported compound l-Cys+(l-Cys⋯l-Cys+)·F−·(F−⋯HF). The dimeric cation is formed by a very short O–H⋯O hydrogen bond with d(O···O) of 2.449(2) Å and 2.435(11) Å in the chloride and bromide, respectively. In addition to crystal structure analysis, Infrared and Raman spectra have been registered and discussed with a particular focus on intermolecular interactions. The l-Cys+·Br−·H2O salt with a simple l-cysteinium cation was also obtained and the crystal structure solved. It resembles its chloride analogue, l-Cys+·Cl−·H2O.