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Polymorphism in 4‐methyl‐1,2,4‐triazolethione
Author(s) -
Elhajji A.,
Zaydoun S.,
Benarafa L.,
Saidi Idrissi M.,
Lautié A.,
Romain F.
Publication year - 2000
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/1097-4555(200010)31:10<951::aid-jrs635>3.0.co;2-3
Subject(s) - metastability , raman spectroscopy , polymorphism (computer science) , crystallization , phase (matter) , crystallography , phase transition , chemistry , infrared spectroscopy , infrared , materials science , physics , thermodynamics , organic chemistry , optics , biochemistry , genotype , gene
Raman and infrared spectra of 4‐methyl‐1,2,4‐triazolethione showed that two crystalline phases, one stable and the other metastable, can be obtained from various crystallization processes. The metastable phase transforms into the stable phase at 395 K by an irreversible first‐order phase transition. The two phases were characterized spectroscopically and structural properties are discussed. Copyright © 2000 John Wiley & Sons, Ltd.