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Published on: April 10, 2015
Complexes Featuring a cis-[M U M] Core (M=Rh, Ir): A New Route to Uranium-Metal Multiple Bonds
Jinghang Shen1, Thayalan Rajeshkumar2, Genfeng Feng1
1State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210023, China.
Researchers synthesized the first molecular uranium complexes with two uranium-metal (U-M) double dative bonds, featuring a cis-[M-U-M] core. This breakthrough expands understanding of actinide element bonding and U-M multiple bond chemistry.
Area of Science:
- Inorganic Chemistry
- Organometallic Chemistry
- Actinide Chemistry
Background:
- Multiple bonds between actinides and main-group elements are common.
- Studies on multiple bonds between actinides and transition metals are rare due to synthetic challenges.
Purpose of the Study:
- To report the first example of molecular uranium complexes with multiple bonds to transition metals.
- To explore a new synthetic method for creating uranium-transition metal multiple bonds.
Main Methods:
- Synthesis of novel uranium complexes featuring a cis-[M-U-M] core (M=Rh, Ir).
- Reaction of chlorine-bridged heterometallic complexes with organometallic reagents (MeMgBr or MeLi).
- Theoretical calculations (including dispersion) to confirm bonding.
Main Results:
- Successfully synthesized the first molecular uranium complexes with a cis-[M-U-M] core.
- Demonstrated an unprecedented arrangement of two M-U double dative bonds to a single uranium center.
- Theoretical calculations confirmed the presence and nature of the U-M double dative bonds.
Conclusions:
- This study enriches the field of uranium-transition metal multiple bond chemistry.
- Provides a new synthetic route for constructing actinide-transition metal multiple bonds.
- Offers new avenues for exploring the fundamental bonding of actinide elements.
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