Metal-metal multiple bonds. 18. Addition reactions of diazoalkanes with the molybdenum-molybdenum triple bond in R2Mo2(CO)4 (R = C5H5, C5H4Me, C5Me5)

1986 ◽  
Vol 5 (11) ◽  
pp. 2283-2294 ◽  
Author(s):  
M. David. Curtis ◽  
L. Messerle ◽  
John J. D'Errico ◽  
William M. Butler ◽  
Michael S. Hay
Keyword(s):  
Triple Bond ◽  
Addition Reactions ◽  
Multiple Bonds ◽  
Metal Metal

scholarly journals Identification of a uranium–rhodium triple bond in a heterometallic cluster

2019 ◽  
Vol 116 (36) ◽  
pp. 17654-17658 ◽  
Author(s):  
Genfeng Feng ◽  
Mingxing Zhang ◽  
Penglong Wang ◽  
Shuao Wang ◽  
Laurent Maron ◽  
...  
Keyword(s):  
Triple Bond ◽  
Covalent Bond ◽  
Small Molecule Activation ◽  
X Ray Diffraction ◽  
Multiple Bonds ◽  
Uranium Metal ◽  
Heterometallic Cluster ◽  
Metal Metal ◽  
Metal Bonds

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 Å in this cluster is only 3% longer than the sum of the covalent triple-bond radii of uranium and rhodium (2.24 Å). 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.

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