Research output: Contribution to journal › Article › peer-review
Reactivity of Tc(I) tetracarbonyl complexes. / Sidorenko, G. V.; Miroslavov, A. E.; Maltsev, D. A.; Lumpov, A. A.; Polotskii, Yu S.; Tyupina, M. Yu; Suglobov, D. N.
In: Radiochemistry, Vol. 56, No. 2, 03.2014, p. 156-161.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Reactivity of Tc(I) tetracarbonyl complexes
AU - Sidorenko, G. V.
AU - Miroslavov, A. E.
AU - Maltsev, D. A.
AU - Lumpov, A. A.
AU - Polotskii, Yu S.
AU - Tyupina, M. Yu
AU - Suglobov, D. N.
N1 - Copyright: Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014/3
Y1 - 2014/3
N2 - Technetium tetracarbonyl complexes [TcBr(CO)4]2 and [TcXan(CO)4] (Xan is methylxanthate), being fairly stable in an inert solvent, undergo rapid decarbonylation in a donor solvent (acetonitrile). The kinetic characteristics of the reaction were determined. The experimental data and results of quantum-chemical calculations allow a conclusion that the reaction, as in the case of pentacarbonyl halides, occurs via dissociative pathway with a lower energy barrier as compared to pentacarbonyl halides. The results obtained were interpreted assuming the formation of unstable complexes of intermediate five-coordinate technetium species with an "inert" solvent molecule and the effect of this phenomenon on the relative stability of the technetium penta- and tetracarbonyl complexes. The technetium complex [TcXan(CO)4] is considerably less stable than its rhenium analog.
AB - Technetium tetracarbonyl complexes [TcBr(CO)4]2 and [TcXan(CO)4] (Xan is methylxanthate), being fairly stable in an inert solvent, undergo rapid decarbonylation in a donor solvent (acetonitrile). The kinetic characteristics of the reaction were determined. The experimental data and results of quantum-chemical calculations allow a conclusion that the reaction, as in the case of pentacarbonyl halides, occurs via dissociative pathway with a lower energy barrier as compared to pentacarbonyl halides. The results obtained were interpreted assuming the formation of unstable complexes of intermediate five-coordinate technetium species with an "inert" solvent molecule and the effect of this phenomenon on the relative stability of the technetium penta- and tetracarbonyl complexes. The technetium complex [TcXan(CO)4] is considerably less stable than its rhenium analog.
KW - acetonitrile
KW - decarbonylation
KW - kinetics
KW - quantum-chemical calculations
KW - rhenium
KW - technetium
KW - tetracarbonyl complexes
KW - xanthate
UR - http://www.scopus.com/inward/record.url?scp=84899745753&partnerID=8YFLogxK
U2 - 10.1134/S1066362214020052
DO - 10.1134/S1066362214020052
M3 - Article
AN - SCOPUS:84899745753
VL - 56
SP - 156
EP - 161
JO - Radiochemistry
JF - Radiochemistry
SN - 1066-3622
IS - 2
ER -
ID: 76835173