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RESEARCH PRODUCT
Uranocenium: Synthesis, Structure, and Chemical Bonding
Yan-cong ChenFu-sheng GuoMing-liang TongAkseli MansikkamäkiRichard A. Layfieldsubject
Materials sciencemagneettiset ominaisuudetElectronic structureorganometalliyhdisteet010402 general chemistry01 natural sciencesCatalysischemistry.chemical_compoundsymbols.namesakekemialliset sidoksetCyclopentadienyl complexkemiallinen synteesi010405 organic chemistryLigandRelaxation (NMR)chemical bondingGeneral MedicineGeneral Chemistrymetalloceneselectronic structure0104 chemical sciencesCrystallographychemistryChemical bonduraaniCovalent bondsymbolsRaman spectroscopyMetallocenedescription
Abstraction of iodide from [(η5 -C5 i Pr5 )2 UI] (1) produced the cationic uranium(III) metallocene [(η5 -C5 i Pr5 )2 U]+ (2) as a salt of [B(C6 F5 )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 showed that the uranium 5f orbitals are strongly split and mixed with the ligand orbitals, thus leading to non-negligible covalent contributions to the bonding. Investigation of the dynamic magnetic properties of 2 revealed 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 by a Raman process.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-01-01 | Angewandte Chemie International Edition |