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Crystal structure, thermal analysis and IR spectrometric investigation of bis (2‐amino‐6‐methyl) pyridinium sulfate
Author(s) -
Guerfel T.,
Chtioui A.,
Gharbi A.,
Jouini A.
Publication year - 2006
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.200510596
Subject(s) - monoclinic crystal system , anhydrous , chemistry , crystal structure , pyridinium , thermal analysis , crystallography , molecule , phase transition , infrared spectroscopy , infrared , crystal (programming language) , thermal , analytical chemistry (journal) , organic chemistry , thermodynamics , physics , optics , programming language , computer science
The synthesis method, crystal structure determination, phase transitions studied by thermal analysis and IR spectrometric investigation of 2C 6 H 9 N 2 + .SO 4 2– 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. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)