Synthesis and Utility of Neptunium(III) Hydrocarbyl Complex

Alexander J Myers; Michael L Tarlton; Steven P Kelley; Wayne W Lukens; Justin R Walensky

doi:10.1002/anie.201906324

Synthesis and Utility of Neptunium(III) Hydrocarbyl Complex

Angew Chem Int Ed Engl. 2019 Oct 14;58(42):14891-14895. doi: 10.1002/anie.201906324. Epub 2019 Sep 19.

Authors

Alexander J Myers¹, Michael L Tarlton¹, Steven P Kelley¹, Wayne W Lukens², Justin R Walensky¹

Affiliations

¹ Department of Chemistry, University of Missouri, Columbia, 601 S. College Avenue, Columbia, MO, 65211, USA.
² Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.

PMID: 31412157
DOI: 10.1002/anie.201906324

Abstract

To extend organoactinide chemistry beyond uranium, reported here is the first structurally characterized transuranic hydrocarbyl complex, Np[η⁴ -Me₂ NC(H)C₆ H₅ ]₃ (1), from reaction of NpCl₄ (DME)₂ with four equivalents of K[Me₂ NC(H)C₆ H₅ ]. Unlike the U^III species, the neptunium analogue can be used to access other Np^III complexes. The reaction of 1 with three equivalents of HE₂ C(2,6-Mes₂ -C₆ H₃ ) (E=O, S) yields [(2,6-Mes₂ -C₆ H₃ )CE₂ ]₃ Np(THF)₂ , maintaining the trivalent oxidation state.

Keywords: actinides; neptunium; organometallics; oxidation; structure elucidation.

Abstract

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