ISSN:
1573-8353
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract An intense band, which is shifted to lower frequencies (to 1350 cm−1) on introduction of a nitro group into the 5-position, is observed in the Raman spectra of nitro derivatives of 1,2,4-triazole which contain a nitro group in the 3-position. Bands with frequencies of 1540–1560 cm−1, which are practically insensitive to the introduction of various substituents into the ring, are observed in the IR and Raman spectra. The frequencies and forms of the normal vibrations of 3-nitro-1,2,4-triazole (symmetry group CS) were calculated. The characteristic (with respect to frequency) vibration with νexp = 1550 cm−1 is related to the symmetrical antiphase vibration of the nitro group, while the bands at 1400–1430 cm−1 are the complex planar vibration of the fragment of the molecule which includes the nitro group and three ring atoms, i.e., , with a substantial contribution to the deformation vibration.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00944429
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