Identification of a uranium-rhodium triple bond in a heterometallic cluster - INSA Toulouse - Institut National des Sciences Appliquées de Toulouse Access content directly
Journal Articles Proceedings of the National Academy of Sciences of the United States of America Year : 2019

Identification of a uranium-rhodium triple bond in a heterometallic cluster

Abstract

The chemistry of d-block metal-metal multiple bonds has been extensively investigated in the past 5 decades. However, the synthesis and characterization of species with f-block metal-metal multiple bonds are significantly more challenging and such species remain extremely rare. Here, we report the identification of a uranium-rhodium triple bond in a heterometallic cluster, which was synthesized under routine conditions. The uranium-rhodium triple-bond length of 2.31 angstrom in this cluster is only 3% longer than the sum of the covalent triple-bond radii of uranium and rhodium (2.24 angstrom). Computational studies reveal that the nature of this uranium-rhodium triple bond is 1 covalent bond with 2 rhodium-to-uranium dative bonds. This heterometallic cluster represents a species with f-block metal-metal triple bond structurally authenticated by X-ray diffraction. These studies not only demonstrate the authenticity of the uranium-metal triple bond, but also provide a possibility for the synthesis of other f-block metal-metal multiple bonds. We expect that this work may further our understanding of the bonding between uranium and transition metals, which may help to design new d-f heterometallic catalysts with uranium-metal bonds for small-molecule activation and to promote the utilization of abundant depleted uranium resources.

Dates and versions

hal-04022187 , version 1 (09-03-2023)

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Genfeng Feng, Mingxing Zhang, Penglong Wang, Shuao Wang, Laurent Maron, et al.. Identification of a uranium-rhodium triple bond in a heterometallic cluster. Proceedings of the National Academy of Sciences of the United States of America, 2019, 116 (36), pp.17654-17658. ⟨10.1073/pnas.1904895116⟩. ⟨hal-04022187⟩
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