Layfield, Richard, Guo, Fu-Sheng, Tong, Ming-Liang, Chen, Yan-Cong and Mansikkamaki, Akseli (2019) Uranocenium: synthesis, structure and chemical bonding. Angewandte Chemie International Edition. ISSN 1433-7851
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Abstract
Abstraction of iodide from [(5-C5iPr5)2UI] (1) produces the cationic uranium(III) metallocene [(5-C5iPr5)2U]+ (2) as a salt of [B(C6F5)4]–. The structure of 2 consists of unsymmetrically bonded cyclopentadienyl ligands and a bending angle of 167.82° at uranium. Analysis of the bonding in 2 shows that the uranium 5f orbitals are strongly split and mixed with the ligand orbitals, leading to non-negligible covalent contributions to the bonding. Studying the dynamic magnetic properties of 2 reveals that the 5f covalency leads to partially quenched anisotropy and fast magnetic relaxation in zero applied magnetic field. Application of a magnetic field leads to dominant relaxation via a Raman process.
Item Type: | Article |
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Keywords: | uranium, organometallics, molecular magnetism |
Schools and Departments: | School of Life Sciences > Chemistry |
Related URLs: | |
Depositing User: | Richard Layfield |
Date Deposited: | 10 May 2019 11:45 |
Last Modified: | 29 Apr 2020 01:00 |
URI: | http://sro.sussex.ac.uk/id/eprint/83665 |
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