The direct electrochemical synthesis of chelate complexes of uranium(IV) and uranium(VI)

Matassa, Luca; Kumar, N. Vijaya; Tuck, Dennis G.

doi:10.1016/s0020-1693(00)86321-5

Cited by 13 publications

(4 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Within the framework of this concept, simultaneous removal of two electrons is more probable than that of three or, the more so, four electrons. In our case, with the U 3 Si alloy as anode, the current efficiency of uranium dissolution assuming formation of U 2+ (in accordance with [1]) should be 200%. In some cases, the current efficiencies exceeding 100% are, indeed, observed in anodic dissolution of f elements (lanthanides) in nonaqueous media, e.g., 1713275% for La, 1673250% for Sm, and 220% for Gd [13315].…”

Section: Resultsmentioning

confidence: 68%

“…At the same time, Mutassa et al [1] suggest an electrolysis mechanism based on the assumption that uranium is electrochemically oxidized to the bivalent state with the formation of intermediate compounds of the type UL 2 , which are subsequently oxidized with the ligand to form UL 4 . The suggested scheme is, on the whole, consistent with the widespread concept that anodic oxidation of a metal is a result of consecutiveparallel elementary events [12].…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Anodic Dissolution of U3Si and UMo in Nonaqueous Media

Kostyuk

2005

Radiochemistry

View full text Add to dashboard Cite

Anodic dissolution of Mo, U 3 Si, and UMo in dry acetonitrile containing 0.1 M (C 2 H 5 ) 4 NCl and in anhydrous and 96% ethanol containing 0.1 M LiCl was studied under potentiostatic conditions. The oxidation potentials of the U and Mo alloys were determined. Anodic dissolution of UMo in the presence of b-diketones yields uranium and molybdenum chelates, and anodic dissolution of U 3 Si yields U(IV) chelates in an inert medium. The conditions for electrochemical preparation of uranyl b-diketonates involving oxidation of U(IV) with atmospheric oxygen in the course of electrolysis were determined.

show abstract

Section: Resultsmentioning

confidence: 68%

Section: Resultsmentioning

confidence: 99%

Anodic Dissolution of U3Si and UMo in Nonaqueous Media

Kostyuk

2005

Radiochemistry

View full text Add to dashboard Cite

show abstract

“…These two species combine to deliver the desired Cu I −NHC complex. To complement these findings and extend the current state‐of‐the‐art, it was hypothesized that any HL ligand with an appropriate reduction potential could be used with a range of metals to electrochemically prepare organometallic complexes in a simple and economical manner. Herein, we report an important extension to the electrochemical syntheses through the use of different ligand types and transition metals (Scheme ).…”

Section: Introductionmentioning

confidence: 99%

A Straightforward Electrochemical Approach to Imine- and Amine-bisphenolate Metal Complexes with Facile Control Over Metal Oxidation State

et al. 2016

View full text Add to dashboard Cite

Synthetic methods to prepare organometallic and coordination compounds such as Schiff‐base complexes are diverse, with the route chosen being dependent upon many factors such as metal–ligand combination and metal oxidation state. In this work we have shown that electrochemical methodology can be employed to synthesize a variety of metal–salen/salan complexes which comprise diverse metal–ligand combinations and oxidation states. Broad application has been demonstrated through the preparation of 34 complexes under mild and ambient conditions. Unprecedented control over metal oxidation state (MII/III/IV where M=Fe, Mn) is presented by simple modification of reaction conditions. Along this route, a general protocol‐switch is described which allows access to analytically pure FeII/III–salen complexes. Tuning electrochemical potential, selective metalation of a Mn/Ni alloy is also presented which exclusively delivers MnII/IV–salen complexes in high yield.

show abstract

“…The present work represents a continuation of studies in this laboratory of the preparation of metal salts of weak acids by electrochemical oxidation of a sacrificial anode in non-aqueous media. Earlier examples of such direct syntheses have lead to neutral and anionic thiolates (3-9, thiocyanates (6), phenylacetylene copper(1) (7), f3-diketonates (8,9), and carboxylates (10). We have now shown that the anodic oxidation of typical transition or Main Group metals into solutions of a tetraalkylthiuram disulphide (R2NCS2)2, or a mixture of a secondary amine R'NH with carbon disulphide, gives the (R2NCS2),M derivatives in almost quantitative yield.…”

Section: Introductionmentioning

confidence: 99%

The direct electrochemical synthesis of dialkyldithiocarbamate and diethyldithiophosphate complexes of main group and transition metals

Geloso¹,

Kumar²,

Lopez-Grado³

et al. 1987

Can. J. Chem.

Self Cite

View full text Add to dashboard Cite

Thispaper is dedicated to Professor Douglas E. Ryarz on the occasior~ of his 65th birthday CORRADO GELOSO, RAJESH KUMAR, JAIME ROMERO LOPEZ-GRADO, and DENNIS G. TUCK. Can. J. Chem. 65, 928 (1987).Dialkyldithiocarbamate derivatives (R,NCS~),,M of a number of metals (M = Fe, Co, Ni, Cu, Ag, Zn, Cd, In, T1) have been synthesised in good yield by electrochemical oxidation of appropriate sacrificial anodes in non-aqueous solutions of either the corresponding tetraalkylthiuram disulphide (RzNCS2)2 (R = Me, Et) or a mixture of carbon disulphide plus the secondary amine R2NH (R = Et, i-Pr; R2NH = piperidine). Similar experiments with solutions of (EtO),P(S)SH (= HL) gave ML, derivatives (M = Fe, Co, Ni, Cu, Ag, Au, Zn, Cd, Hg, Ga, In, T1) while in the presence of HL + 1 ,lo-phenanthroline, ML,, .phen derivatives were obtained for M = V, Mn, Fe, Co, Zn, and Ga.CORRADO GELOSO, RAJESH KUMAR, JAIME ROMERO LOPEZ-GRADO et DENNIS G. TUCK. Can. J. Chem. 65, 928 (1987).On a synthCtisC avec de bons rendements les derives dialkyldithiocarbamates (R2NCS2),,M d'un certain nombre de metau (M = Fe, Co, Ni, Cu, Ag, Zn, Cd, In, T1) en mettant en jeu l'oxydation Clectrochimique d'anodes sacrifices appropriees dans des solutions non-aqueuses soit des disulfures de tCtraalkylthiurames correspondants (R2NCS2)2 (R = Me, Et) soit d'un melange de disulfure de carbone plus l'amine secondaire R2NH (R = Et, i-Pr; RzNH = piperidhe). Des experiences semblables avec des solutions de (EtO)?P(S)SH (= HL) conduisent aux derives ML,, (M = Fe, Co, Ni, Cu, Ag, Au, Zn, Cd, Hg, Ga, In, T1) alors que, en presence de HL + phenanthroline-l,10, on obtient des derives ML,, .phen (M = V, Mn, Fe, Co, Zn et Ga).[Traduit par la revue]

show abstract

The direct electrochemical synthesis of chelate complexes of uranium(IV) and uranium(VI)

Cited by 13 publications

References 13 publications

Anodic Dissolution of U3Si and UMo in Nonaqueous Media

Anodic Dissolution of U3Si and UMo in Nonaqueous Media

A Straightforward Electrochemical Approach to Imine- and Amine-bisphenolate Metal Complexes with Facile Control Over Metal Oxidation State

The direct electrochemical synthesis of dialkyldithiocarbamate and diethyldithiophosphate complexes of main group and transition metals

Contact Info

Product

Resources

About