Effects of Ultrasounds on Neat nitrobenzene

Stavarache, Carmen Eugenia; Maeda, Yasuaki; Vinatoru, Mircea

Carmen Eugenia Stavarache, Yasuaki Maeda, Mircea Vinatoru

Effects of Ultrasounds on Neat nitrobenzene

Abstract:

Neat nitrobenzene was continuously irradiated at two ultrasonic frequencies: 40 and 200 kHz, under air and argon atmosphere, respectively. Samples taken at intervals of 1, 5, 10 and 24 h were analyzed by GC-MS and decomposition products were identified. Possible reaction mechanisms are discussed. Presence of air as dissolved gas leads to oxygenated compounds such as 1,4-benzoquinone, 2,4-dinitrophenol, m-dinitrobenzene while argon inhibits the decomposition of nitrobenzene, especially at sonication times under 5 h. Based on the nature of the compounds identified we advanced a mechanism, involving a divergent splitting of unstable radical cation of NB in air and argon respectively. Thus, under air, the phenyl cation formation is preferred leading to 1,4-benzoquinone nitro-biphenyls and dinitrobenzene, while under argon, the phenyl radical formation seems to be favored, leading to phenol and diphenyl ether. The oxygenated compounds detected under argon clearly are a consequence of the nitro group splitting.

Keywords:
ultrasound; nitrobenzene; frequency effect; mechanism

Issue: 2019, Volume 70, Issue 8

Pages: 3085-3088

Publication date: 2019/9/15

https://doi.org/10.37358/RC.19.8.7492

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This article is published under the Creative Commons Attribution 4.0 International License

Citation Styles

Cite this article as:
STAVARACHE, C.E., MAEDA, Y., VINATORU, M., Effects of Ultrasounds on Neat nitrobenzene, Rev. Chim., 70(8), 2019, 3085-3088.

Vancouver
Stavarache CE, Maeda Y, Vinatoru M. Effects of Ultrasounds on Neat nitrobenzene. Rev. Chim.[internet]. 2019 Aug;70(8):3085-3088. Available from: https://doi.org/10.37358/RC.19.8.7492

APA 6th edition
Stavarache, C.E., Maeda, Y. & Vinatoru, M. (2019). Effects of Ultrasounds on Neat nitrobenzene. Revista de Chimie, 70(8), 3085-3088. https://doi.org/10.37358/RC.19.8.7492

Harvard
Stavarache, C.E., Maeda, Y., Vinatoru, M. (2019). 'Effects of Ultrasounds on Neat nitrobenzene', Revista de Chimie, 70(8), pp. 3085-3088. https://doi.org/10.37358/RC.19.8.7492

IEEE
C.E. Stavarache, Y. Maeda, M. Vinatoru, "Effects of Ultrasounds on Neat nitrobenzene". Revista de Chimie, vol. 70, no. 8, pp. 3085-3088, 2019. [online]. https://doi.org/10.37358/RC.19.8.7492

Text
Carmen Eugenia Stavarache, Yasuaki Maeda, Mircea Vinatoru,
Effects of Ultrasounds on Neat nitrobenzene,
Revista de Chimie,
Volume 70, Issue 8,
2019,
Pages 3085-3088,
ISSN 2668-8212,
https://doi.org/10.37358/RC.19.8.7492.
(https://revistadechimie.ro/Articles.asp?ID=7492)
Keywords: ultrasound; nitrobenzene; frequency effect; mechanism

RIS
TY - JOUR
T1 - Effects of Ultrasounds on Neat nitrobenzene
A1 - Stavarache, Carmen Eugenia
A2 - Maeda, Yasuaki
A3 - Vinatoru, Mircea
JF - Revista de Chimie
JO - Rev. Chim.
PB - Revista de Chimie SRL
SN - 2668-8212
Y1 - 2019
VL - 70
IS - 8
SP - 3085
EP - 3088
UR - https://doi.org/10.37358/RC.19.8.7492
KW - ultrasound
KW - nitrobenzene
KW - frequency effect
KW - mechanism
ER -

BibTex
@article{RevCh2019P3085,
author = {Stavarache Carmen Eugenia and Maeda Yasuaki and Vinatoru Mircea},
title = {Effects of Ultrasounds on Neat nitrobenzene},
journal = {Revista de Chimie},
volume = {70},
number = {8},
pages = {3085-3088},
year = {2019},
issn = {2668-8212},
doi = {https://doi.org/10.37358/RC.19.8.7492},
url = {https://revistadechimie.ro/Articles.asp?ID=7492}
}

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