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Tetranuclear Uranium Clusters by Reductive Cleavage of 3,5-Dimethylpyrazolate


  • This research was funded by NSF Grant No. CHE-0617063. We thank Dr. F. J. Hollander and Dr. A. Oliver for assistance.


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Hard-core uranium chemistry: The 3,5-dimethylpyrazolate anion can be activated by uranium(III) to form 4-ketimidopent-2-ene-2-imido (kipi3−) units, which are isoelectronic to acetylacetonate. Three related tetranuclear uranium cluster compounds were isolated (see picture), of which two are mixed valent.

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