A uranium reaction reported in 2021 showed that one uranium center can carry out a four-electron reduction of azobenzene, producing a bis(imido) uranium(VI) complex. The authors described it as a clear-cut example of single-metal four-electron transfer in f-element chemistry; their proposed route proceeds in two successive two-electron steps.
What was the uranium reaction?
The study, “Single metal four-electron reduction by U(II) and masked ‘U(II)’ compounds,” reports reducing azobenzene with four electrons to form a bis(imido) uranium(VI) complex. The work used an oxo-bridged diuranium(III) compound that reacts through a masked U(II) intermediate. The authors also reported the same reactivity with a previously reported molecular U(II) complex.
| # | Preview | Product | Price | |
|---|---|---|---|---|
| 1 |
|
Inorganic Chemistry | $92.90 | Buy on Amazon |
| 2 |
|
Inorganic Chemistry (5th Edition) | $280.55 | Buy on Amazon |
| 3 |
|
Inorganic Chemistry | $92.99 | Buy on Amazon |
| 4 |
|
Inorganic Chemistry (4th Edition) | $100.60 | Buy on Amazon |
| 5 |
|
Inorganic Chemistry | $94.52 | Buy on Amazon |
As an Amazon Associate I earn from qualifying purchases.
The paper additionally reports a separate two-electron reduction of diphenylacetylene. That result is distinct from the four-electron azobenzene transformation.
What does “four-electron reduction” mean here?
Reduction involves a gain of electrons. In this reaction, the azobenzene transformation is described as a four-electron reduction, while the resulting uranium complex contains uranium in the +VI oxidation state and two imido ligands. The key point is that the four-electron transformation is attributed to a single uranium center, rather than to electron transfers divided among several metal centers.
#1 Best Overall
This matters against the background described by the authors: uranium redox chemistry is often dominated by single-electron transfer, and clear-cut examples of a single f-element metal carrying out a four-electron transfer had remained unknown. The finding is a bounded claim about this reported molecular chemistry—not a claim that all uranium or f-element compounds behave this way.
How do the authors propose the reaction proceeds?
Computational studies support a pathway in which one U(II) center transfers electrons in two consecutive two-electron steps. The proposed sequence passes through a U(IV) hydrazide intermediate before reaching the U(VI) bis(imido) product.
Rank #2
- Used Book in Good Condition
The researchers isolated a cis-hydrazide complex, which they presented as corroboration for the proposed route to the final product. The calculations support the mechanism, while the isolated intermediate provides experimental evidence relevant to it; neither establishes a universal mechanism for f-element chemistry.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Why is this a chemistry result, not a technology announcement?
The report is a demonstration of multielectron redox capability under molecular conditions. The available account does not establish an industrial application, scale-up, or a product based on the reaction. Its significance is fundamental: it documents a single-metal four-electron transformation in f-element chemistry and offers a proposed two-step explanation for how it occurs.
Rank #3
Paper details
The paper is by D. K. Modder, C. T. Palumbo, I. Douair, R. Scopelliti, L. Maron and coauthors. EPFL lists it in Chemical Science, volume 12, pages 6153–6158 (2021), DOI 10.1039/d1sc00668a. EPFL publication record; see also Chemistry World’s 12 April 2021 report.
Quick Recap
Best Value
Rank #4
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
