Kinetics and mechanism of structural transformations of 2-(5-ethoxycarbonylmethyl-4-oxothiazolidin-2-ylidene)-N-(2-phenylethyl)-ethanamide during heating
Abstract
The kinetics and mechanism of the structural transformation of 2-(5-ethoxycarbonylmethyl-4-oxothiazolidin-2-ylidene)-N-(2-phenylethyl)-ethanamide in non-isothermal conditions were studied by using isoconversion as well as non-isoconversion techniques. It was shown that the crystal, Z-form of compound, was stable in the temperature range from room temperature to melting point, when E-form of compound was formed. This process involves the breaking of crystal structure and the forming of glass material as a new phase, which by cooling forms crystal of the E-form of compound very slowly. The dependences of kinetic parameters on fractional extent conversion were determined indicating a very complex process which involves more than one elementary step, as can be expected for most solid state reactions. The possible mechanism of the process was discussed according to the algorithm concerning the form of these dependences. The evaluation of kinetics parameters and isokinetic relationships were... done by combination of model fitting and model-free approach.
Keywords:
activation energy / phase transformation / glass materialsSource:
Russian Journal of Physical Chemistry A, 2011, 85, 13, 2288-2294Publisher:
- Maik Nauka/Interperiodica/Springer, New York
Funding / projects:
DOI: 10.1134/S0036024411130164
ISSN: 0036-0244
WoS: 000297922700009
Scopus: 2-s2.0-85064506010
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Institution/Community
IHTMTY - JOUR AU - Minić, Dragica M. AU - Djordjevic, M. AU - Džambaski, Zdravko AU - Šumar-Ristović, Maja AU - Marković, Rade PY - 2011 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/820 AB - The kinetics and mechanism of the structural transformation of 2-(5-ethoxycarbonylmethyl-4-oxothiazolidin-2-ylidene)-N-(2-phenylethyl)-ethanamide in non-isothermal conditions were studied by using isoconversion as well as non-isoconversion techniques. It was shown that the crystal, Z-form of compound, was stable in the temperature range from room temperature to melting point, when E-form of compound was formed. This process involves the breaking of crystal structure and the forming of glass material as a new phase, which by cooling forms crystal of the E-form of compound very slowly. The dependences of kinetic parameters on fractional extent conversion were determined indicating a very complex process which involves more than one elementary step, as can be expected for most solid state reactions. The possible mechanism of the process was discussed according to the algorithm concerning the form of these dependences. The evaluation of kinetics parameters and isokinetic relationships were done by combination of model fitting and model-free approach. PB - Maik Nauka/Interperiodica/Springer, New York T2 - Russian Journal of Physical Chemistry A T1 - Kinetics and mechanism of structural transformations of 2-(5-ethoxycarbonylmethyl-4-oxothiazolidin-2-ylidene)-N-(2-phenylethyl)-ethanamide during heating VL - 85 IS - 13 SP - 2288 EP - 2294 DO - 10.1134/S0036024411130164 ER -
@article{ author = "Minić, Dragica M. and Djordjevic, M. and Džambaski, Zdravko and Šumar-Ristović, Maja and Marković, Rade", year = "2011", abstract = "The kinetics and mechanism of the structural transformation of 2-(5-ethoxycarbonylmethyl-4-oxothiazolidin-2-ylidene)-N-(2-phenylethyl)-ethanamide in non-isothermal conditions were studied by using isoconversion as well as non-isoconversion techniques. It was shown that the crystal, Z-form of compound, was stable in the temperature range from room temperature to melting point, when E-form of compound was formed. This process involves the breaking of crystal structure and the forming of glass material as a new phase, which by cooling forms crystal of the E-form of compound very slowly. The dependences of kinetic parameters on fractional extent conversion were determined indicating a very complex process which involves more than one elementary step, as can be expected for most solid state reactions. The possible mechanism of the process was discussed according to the algorithm concerning the form of these dependences. The evaluation of kinetics parameters and isokinetic relationships were done by combination of model fitting and model-free approach.", publisher = "Maik Nauka/Interperiodica/Springer, New York", journal = "Russian Journal of Physical Chemistry A", title = "Kinetics and mechanism of structural transformations of 2-(5-ethoxycarbonylmethyl-4-oxothiazolidin-2-ylidene)-N-(2-phenylethyl)-ethanamide during heating", volume = "85", number = "13", pages = "2288-2294", doi = "10.1134/S0036024411130164" }
Minić, D. M., Djordjevic, M., Džambaski, Z., Šumar-Ristović, M.,& Marković, R.. (2011). Kinetics and mechanism of structural transformations of 2-(5-ethoxycarbonylmethyl-4-oxothiazolidin-2-ylidene)-N-(2-phenylethyl)-ethanamide during heating. in Russian Journal of Physical Chemistry A Maik Nauka/Interperiodica/Springer, New York., 85(13), 2288-2294. https://doi.org/10.1134/S0036024411130164
Minić DM, Djordjevic M, Džambaski Z, Šumar-Ristović M, Marković R. Kinetics and mechanism of structural transformations of 2-(5-ethoxycarbonylmethyl-4-oxothiazolidin-2-ylidene)-N-(2-phenylethyl)-ethanamide during heating. in Russian Journal of Physical Chemistry A. 2011;85(13):2288-2294. doi:10.1134/S0036024411130164 .
Minić, Dragica M., Djordjevic, M., Džambaski, Zdravko, Šumar-Ristović, Maja, Marković, Rade, "Kinetics and mechanism of structural transformations of 2-(5-ethoxycarbonylmethyl-4-oxothiazolidin-2-ylidene)-N-(2-phenylethyl)-ethanamide during heating" in Russian Journal of Physical Chemistry A, 85, no. 13 (2011):2288-2294, https://doi.org/10.1134/S0036024411130164 . .