Oblate versus Prolate Electron Density of Lanthanide Ions: A Design Criterion for Engineering Toroidal Moments? A Case Study on {Ln III  6 } (Ln=Tb, Dy, Ho and Er) Wheels | Zendy

Langley Stuart K. | Zendy; Vignesh Kuduva R. | Zendy; Moubaraki Boujemaa | Zendy; Rajaraman Gopalan | Zendy; Murray Keith S. | Zendy

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Oblate versus Prolate Electron Density of Lanthanide Ions: A Design Criterion for Engineering Toroidal Moments? A Case Study on {Ln III 6 } (Ln=Tb, Dy, Ho and Er) Wheels

Author(s) -

Langley Stuart K.,

Vignesh Kuduva R.,

Moubaraki Boujemaa,

Rajaraman Gopalan,

Murray Keith S.

Publication year - 2019

Publication title -

chemistry – a european journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.687

H-Index - 242

eISSN - 1521-3765

pISSN - 0947-6539

DOI - 10.1002/chem.201805765

Subject(s) - lanthanide , toroid , ion , magnetic moment , electron , ground state , chemistry , prolate spheroid , atomic physics , crystallography , condensed matter physics , physics , nuclear physics , classical mechanics , plasma , organic chemistry

We report four new complexes based on a {Ln III 6 } wheel structure, three of which possess a net toroidal magnetic moment. The four examples consist of {Tb III 6 } and {Ho III 6 } wheels, which are rare examples of non Dy III based complexes possessing a toroidal magnetic ground state, and a {Dy III 6 } complex which improves its toroidal structure upon lowering the crystallographic symmetry from trigonal ( R 3 ‾ ) to triclinic ( P 1 ‾ ). Notably the toroidal moment is lost for the trigonal {Er III 6 } analogue. This suggests the possibility of utilizing the popular concept of oblate and prolate electron density of the ground state M J levels of lanthanide ions to engineer toroidal moments.

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