[article]
| Titre : |
X-Ray crystal structure analysis and determination of azo-enamine and hydrazone-imine tautomers of two hetarylazo indole dyes |
| Type de document : |
texte imprimé |
| Auteurs : |
Süheyla Özbey, Auteur ; Arzu Karayel, Auteur ; Gülten Kavak, Auteur ; Zeynel Seferoglu, Auteur ; Nermin Ertan, Auteur |
| Année de publication : |
2008 |
| Article en page(s) : |
p. 358-364 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.3 Teinture et impression des tissus |
| Résumé : |
Two hetarylazo indole dyes were analyzed by single crystal X-ray diffraction. Dye 1, C18H14N4O, crystallises in the monoclinic system, space group P21/c, with two independent molecules in the asymmetric unit. Dye 2, C20H16N4, also crystallises in the monoclinic system, space group P21/n, Z = 4. In both compounds, there are two intramolecular C–H...N hydrogen bonds which influenced the molecular conformation between the azo group and the indole ring system and its phenyl substituent. Each of the independent molecules of dye 1 interact through the N–H...N hydrogen bond, whereas no classical intermolecular hydrogen bond was observed in dye 2. The molecules of dye 1 and dye 2 are packed differently in both structures. |
| DOI : |
10.1111/j.1478-4408.2007.00110.x |
| En ligne : |
http://onlinelibrary.wiley.com/doi/10.1111/j.1478-4408.2007.00110.x/pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6855 |
in COLORATION TECHNOLOGY > Vol. 123, N° 6 (2007) . - p. 358-364
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