Crystal Research and Technology
Cryst. Res. Technol. 41, 416 (2006) - Abstract -

Crystal structure, thermal analysis and IR spectrometric investigation of bis (2-amino-6-methyl) pyridinium sulfate

T. Guerfel, A. Chtioui, A. Gharbi, and A. Jouini

Laboratoire de Chimie du Solide, Département de chimie, Faculté des Sciences de Monastir, 5019 Monastir, Tunisia

Keywords crystal structure, phase transition, infrared spectrometry
PACS 61.66.Hq
DOI 10.1002/crat.200510596

The synthesis method, crystal structure determination, phase transitions studied by thermal analysis and IR spectrometric investigation of 2C6H9N2+.SO42- are reported. The compound crystallizes in the monoclinic space group C2/c (no. 15) with a = 10.5068(4) Å, b = 10.2225(5) Å, c = 14.0422(7) Å, and β = 104.489(3)°. The atomic arrangement can be described by layers built by all the components of the structure and centered by planes z = 1/4 and 3/4. The organic molecules form channels parallel to the c direction with dimensions of 4.163(1)Å and 5.148(4)Å. Thermal analysis shows that the anhydrous compound presents an irreversible weak phase transition. The IR study, based on theoretical analyses and on the literature data allows the interpretation of the IR spectrum.





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