Thermochimica Acta, volume 207, pages 115-130

Thermal decomposition of aminotetrazoles

S.V. Levchik 1
Oleg A. Ivashkevich 1
A.I. Balabanovich 1
A.I. Lesnikovich 1
P.N. Gaponik 1
L. Costa 2
2
 
Dipartamento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali dell'Università, Via P. Giuria 7, 10125 TurinItaly
Publication typeJournal Article
Publication date1992-10-01
Quartile SCImago
Q2
Quartile WOS
Q2
Impact factor3.5
ISSN00406031, 1872762X
Physical and Theoretical Chemistry
Condensed Matter Physics
Instrumentation
Abstract
The thermal decomposition of 5-aminotetrazole (5-AT) has been studied by thermogravimetry, thermal volumometry, DSC, DTA and EGA. Solid products of thermal decomposition have been identified by IR spectroscopy and gaseous products by IR and mass spectrometry. Theoretical considerations of thermodynamic characteristics and energies of atomic bonding in the 5-AT tautomeric forms and intermediates have been carried out by the MO SCF method in the MNDO approximation. On the basis of IR and available literature data it is shown that dehydrated 5-AT exists mainly in the imino form in the solid state. Thermal treatment leads to increasing content of the amino form. The thermal decomposition of the imino form of 5-AT starts just after melting and results in hydrogen azide and carbodiimide. The linear polymer of carbodiimide and melamine derivatives have been identified in the solid residue. Further increase of temperature in the course of linear heating leads to another route of thermal decomposition involving the amino form of 5-AT accompanied by the evolution of nitrogen. Apparent activation energies of these routes determined from non-isothermal thermogravimetric data amount to 165 and 135 kJ mol−1, respectively.

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Levchik S. et al. Thermal decomposition of aminotetrazoles // Thermochimica Acta. 1992. Vol. 207. pp. 115-130.
GOST all authors (up to 50) Copy
Levchik S., Ivashkevich O. A., Balabanovich A., Lesnikovich A., Gaponik P., Costa L. Thermal decomposition of aminotetrazoles // Thermochimica Acta. 1992. Vol. 207. pp. 115-130.
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RIS Copy
TY - JOUR
DO - 10.1016/0040-6031(92)80129-K
UR - https://doi.org/10.1016/0040-6031(92)80129-K
TI - Thermal decomposition of aminotetrazoles
T2 - Thermochimica Acta
AU - Levchik, S.V.
AU - Ivashkevich, Oleg A.
AU - Balabanovich, A.I.
AU - Lesnikovich, A.I.
AU - Gaponik, P.N.
AU - Costa, L.
PY - 1992
DA - 1992/10/01 00:00:00
PB - Elsevier
SP - 115-130
VL - 207
SN - 0040-6031
SN - 1872-762X
ER -
BibTex
Cite this
BibTex Copy
@article{1992_Levchik,
author = {S.V. Levchik and Oleg A. Ivashkevich and A.I. Balabanovich and A.I. Lesnikovich and P.N. Gaponik and L. Costa},
title = {Thermal decomposition of aminotetrazoles},
journal = {Thermochimica Acta},
year = {1992},
volume = {207},
publisher = {Elsevier},
month = {oct},
url = {https://doi.org/10.1016/0040-6031(92)80129-K},
pages = {115--130},
doi = {10.1016/0040-6031(92)80129-K}
}
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