Radiation Physics and Chemistry, volume 115, pages 183-188
The low temperature radiolysis of cis-syn-cis-dicyclohexano-18-crown-6 complexes with alkaline earth metal nitrates: An evidence for energy transfer to the macrocyclic ligand
Shmakova Nina L.
1
,
Sokolova N.A.
3
,
Publication type: Journal Article
Publication date: 2015-10-01
Journal:
Radiation Physics and Chemistry
Quartile SCImago
Q2
Quartile WOS
Q1
Impact factor: 2.9
ISSN: 0969806X
Radiation
Abstract
Abstract Formation of paramagnetic intermediates in macrocyclic complexes of cis-syn-cis-dicyclohexano-18-crown-6 (DCH18C6) with alkaline earth metal nitrates under X-rays irradiation was studied by EPR spectroscopy. NO 3 2 - dianions appear to be predominant intermediate species in the samples irradiated at 77 K at low doses (up to 40 kGy). This result was interpreted as an evidence for energy transfer within the complex from crown ether to nitrate anion. Increase in the absorbed dose from 40 kGy to 284 kGy results in built-up of a new EPR signal assigned to macrocyclic –CH2–ĊH–O– radicals produced from crown ether moieties. Thermal annealing of the irradiated macrocyclic complexes at 273 К led to fast decay of NO 3 2 - . This process was accompanied by a formation of –CH2–ĊH–O– radicals in secondary reactions. The nature of the metal cations coordinated in the macrocycle cavity had no appreciable effect on the composition of radical products and their post-radiation transformations.
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Zakurdaeva O. A. et al. The low temperature radiolysis of cis-syn-cis-dicyclohexano-18-crown-6 complexes with alkaline earth metal nitrates: An evidence for energy transfer to the macrocyclic ligand // Radiation Physics and Chemistry. 2015. Vol. 115. pp. 183-188.
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Zakurdaeva O. A., Nesterov S. V., Shmakova N. L., Sokolova N., Feldman V. I. The low temperature radiolysis of cis-syn-cis-dicyclohexano-18-crown-6 complexes with alkaline earth metal nitrates: An evidence for energy transfer to the macrocyclic ligand // Radiation Physics and Chemistry. 2015. Vol. 115. pp. 183-188.
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TY - JOUR
DO - 10.1016/j.radphyschem.2015.07.004
UR - https://doi.org/10.1016%2Fj.radphyschem.2015.07.004
TI - The low temperature radiolysis of cis-syn-cis-dicyclohexano-18-crown-6 complexes with alkaline earth metal nitrates: An evidence for energy transfer to the macrocyclic ligand
T2 - Radiation Physics and Chemistry
AU - Sokolova, N.A.
AU - Zakurdaeva, Olga A
AU - Nesterov, Sergey V
AU - Shmakova, Nina L.
AU - Feldman, Vladimir I.
PY - 2015
DA - 2015/10/01 00:00:00
PB - Elsevier
SP - 183-188
VL - 115
SN - 0969-806X
ER -
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@article{2015_Zakurdaeva,
author = {N.A. Sokolova and Olga A Zakurdaeva and Sergey V Nesterov and Nina L. Shmakova and Vladimir I. Feldman},
title = {The low temperature radiolysis of cis-syn-cis-dicyclohexano-18-crown-6 complexes with alkaline earth metal nitrates: An evidence for energy transfer to the macrocyclic ligand},
journal = {Radiation Physics and Chemistry},
year = {2015},
volume = {115},
publisher = {Elsevier},
month = {oct},
url = {https://doi.org/10.1016%2Fj.radphyschem.2015.07.004},
pages = {183--188},
doi = {10.1016/j.radphyschem.2015.07.004}
}
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