Electrochemical redox reactions of uranium(VI) complexes with multidentate ligands in dimethyl sulfoxide

Seong Yun Kim; Toshihide Asakura; Yasuji Morita; Gunzo Uchiyama; Yasuhisa Ikeda

doi:10.1524/ract.93.2.75.59417

Electrochemical redox reactions of uranium(VI) complexes with multidentate ligands in dimethyl sulfoxide

Seong Yun Kim, Toshihide Asakura, Yasuji Morita, Gunzo Uchiyama, Yasuhisa Ikeda

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Electrochemical reactions of UO₂(β-diketonato) ₂-dmso, UO₂(trop)₂dmso, UO₂(sap) (dmso)₂, and UO₂(salen)dmso (dmso = dimethyl sulfoxide, β-diketonate = benzoylacetonate (ba), benzoyltrifluoroacetonate (btfa), and thenoyltrifluoroacetonate (ttfa), trop = tropolonate, sap = 2-salicylidenaminophenolate, and salen = N,N′- disalicylidenethylenediaminate) complexes in dmso solutions containing tetrabutylammonium perchlorate as a supporting electrolyte have been studied with cyclic voltammetry. These uranyl(VI) complexes were found to be reduced quasi-reversibly to U(V) species. The formal redox potentials (E°, vs. ferrocen/ferrocenium) for U(VI)/U(V) couples were determined to be - 1.416 V for UO₂(ba)₂dmso, - 1.073 V for UO₂(btfa) ₂dmso, -1.082 V for UO₂(ttfa)₂dmso, -1.379 V for UO₂(trop)₂dmso, -1.500 V for UO₂(sap)(dmso) ₂, and -1.602 V for UO₂(salen)dmso. Furthermore, the resulting U(V) complexes, [UO₂(btfa)₂dmso]^-, [UO₂(ttfa)₂dmso]^-, and [UO₂(salen) dmso]^-, were found to be able to exist stably in dmso solutions.

Original language	English
Pages (from-to)	75-81
Number of pages	7
Journal	Radiochimica Acta
Volume	93
Issue number	2
DOIs	https://doi.org/10.1524/ract.93.2.75.59417
Publication status	Published - 2005
Externally published	Yes

Keywords

Cyclic voltammetry
Electrochemistry
Multidentate ligands
Redox reaction
Uranyl complexes

ASJC Scopus subject areas

Physical and Theoretical Chemistry

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10.1524/ract.93.2.75.59417

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@article{2d7a983c23114a9ba7096092bfb15cd1,

title = "Electrochemical redox reactions of uranium(VI) complexes with multidentate ligands in dimethyl sulfoxide",

abstract = "Electrochemical reactions of UO2(β-diketonato) 2-dmso, UO2(trop)2dmso, UO2(sap) (dmso)2, and UO2(salen)dmso (dmso = dimethyl sulfoxide, β-diketonate = benzoylacetonate (ba), benzoyltrifluoroacetonate (btfa), and thenoyltrifluoroacetonate (ttfa), trop = tropolonate, sap = 2-salicylidenaminophenolate, and salen = N,N′- disalicylidenethylenediaminate) complexes in dmso solutions containing tetrabutylammonium perchlorate as a supporting electrolyte have been studied with cyclic voltammetry. These uranyl(VI) complexes were found to be reduced quasi-reversibly to U(V) species. The formal redox potentials (E°, vs. ferrocen/ferrocenium) for U(VI)/U(V) couples were determined to be - 1.416 V for UO2(ba)2dmso, - 1.073 V for UO2(btfa) 2dmso, -1.082 V for UO2(ttfa)2dmso, -1.379 V for UO2(trop)2dmso, -1.500 V for UO2(sap)(dmso) 2, and -1.602 V for UO2(salen)dmso. Furthermore, the resulting U(V) complexes, [UO2(btfa)2dmso]-, [UO2(ttfa)2dmso]-, and [UO2(salen) dmso]-, were found to be able to exist stably in dmso solutions.",

keywords = "Cyclic voltammetry, Electrochemistry, Multidentate ligands, Redox reaction, Uranyl complexes",

author = "Kim, {Seong Yun} and Toshihide Asakura and Yasuji Morita and Gunzo Uchiyama and Yasuhisa Ikeda",

year = "2005",

doi = "10.1524/ract.93.2.75.59417",

language = "English",

volume = "93",

pages = "75--81",

journal = "Radiochimica Acta",

issn = "0033-8230",

publisher = "R. Oldenbourg",

number = "2",

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TY - JOUR

T1 - Electrochemical redox reactions of uranium(VI) complexes with multidentate ligands in dimethyl sulfoxide

AU - Kim, Seong Yun

AU - Asakura, Toshihide

AU - Morita, Yasuji

AU - Uchiyama, Gunzo

AU - Ikeda, Yasuhisa

PY - 2005

Y1 - 2005

N2 - Electrochemical reactions of UO2(β-diketonato) 2-dmso, UO2(trop)2dmso, UO2(sap) (dmso)2, and UO2(salen)dmso (dmso = dimethyl sulfoxide, β-diketonate = benzoylacetonate (ba), benzoyltrifluoroacetonate (btfa), and thenoyltrifluoroacetonate (ttfa), trop = tropolonate, sap = 2-salicylidenaminophenolate, and salen = N,N′- disalicylidenethylenediaminate) complexes in dmso solutions containing tetrabutylammonium perchlorate as a supporting electrolyte have been studied with cyclic voltammetry. These uranyl(VI) complexes were found to be reduced quasi-reversibly to U(V) species. The formal redox potentials (E°, vs. ferrocen/ferrocenium) for U(VI)/U(V) couples were determined to be - 1.416 V for UO2(ba)2dmso, - 1.073 V for UO2(btfa) 2dmso, -1.082 V for UO2(ttfa)2dmso, -1.379 V for UO2(trop)2dmso, -1.500 V for UO2(sap)(dmso) 2, and -1.602 V for UO2(salen)dmso. Furthermore, the resulting U(V) complexes, [UO2(btfa)2dmso]-, [UO2(ttfa)2dmso]-, and [UO2(salen) dmso]-, were found to be able to exist stably in dmso solutions.

AB - Electrochemical reactions of UO2(β-diketonato) 2-dmso, UO2(trop)2dmso, UO2(sap) (dmso)2, and UO2(salen)dmso (dmso = dimethyl sulfoxide, β-diketonate = benzoylacetonate (ba), benzoyltrifluoroacetonate (btfa), and thenoyltrifluoroacetonate (ttfa), trop = tropolonate, sap = 2-salicylidenaminophenolate, and salen = N,N′- disalicylidenethylenediaminate) complexes in dmso solutions containing tetrabutylammonium perchlorate as a supporting electrolyte have been studied with cyclic voltammetry. These uranyl(VI) complexes were found to be reduced quasi-reversibly to U(V) species. The formal redox potentials (E°, vs. ferrocen/ferrocenium) for U(VI)/U(V) couples were determined to be - 1.416 V for UO2(ba)2dmso, - 1.073 V for UO2(btfa) 2dmso, -1.082 V for UO2(ttfa)2dmso, -1.379 V for UO2(trop)2dmso, -1.500 V for UO2(sap)(dmso) 2, and -1.602 V for UO2(salen)dmso. Furthermore, the resulting U(V) complexes, [UO2(btfa)2dmso]-, [UO2(ttfa)2dmso]-, and [UO2(salen) dmso]-, were found to be able to exist stably in dmso solutions.

KW - Cyclic voltammetry

KW - Electrochemistry

KW - Multidentate ligands

KW - Redox reaction

KW - Uranyl complexes

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U2 - 10.1524/ract.93.2.75.59417

DO - 10.1524/ract.93.2.75.59417

M3 - Article

AN - SCOPUS:14744300741

VL - 93

SP - 75

EP - 81

JO - Radiochimica Acta

JF - Radiochimica Acta

SN - 0033-8230

IS - 2

ER -

Electrochemical redox reactions of uranium(VI) complexes with multidentate ligands in dimethyl sulfoxide

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