Issue 47, 2021

Tuning the coordination sphere of octahedral Dy(iii) complexes with silanolate/stannanolate ligands: synthesis, structures and slow relaxation of the magnetization

Abstract

We report the synthesis, crystal structures and magnetic investigations of four octahedral dysprosium complexes based on silanolate or stannanolate ligands of respective formula cis-[Dy(OSiPh3)2(THF)4][BPh4]·THF·C6H6 (1), cis-[Dy(OSnPh3)2(THF)4][BPh4]·THF·C6H6·C6H14 (2), fac-[Dy(OSiPh3)3(THF)3]·THF (3) and fac-[Dy(OSiPh3)3(bipy)(THF)]·THF (4) (where THF = tetrahydrofuran, Ph = phenyl, bipy = 2,2′-bipyridine). Whereas complexes 1–3 exhibit a field-induced slow relaxation of the magnetization, 4 is a zero-field single-molecule magnet, which could be rationalized by the introduction of the bidentate bipy ligand providing a more important linearity of the (Si)O–Dy–O(Si) angle through distortion of the coordination sphere.

Graphical abstract: Tuning the coordination sphere of octahedral Dy(iii) complexes with silanolate/stannanolate ligands: synthesis, structures and slow relaxation of the magnetization

Supplementary files

Article information

Article type
Paper
Submitted
20 sept. 2021
Accepted
29 oct. 2021
First published
29 oct. 2021

CrystEngComm, 2021,23, 8351-8359

Tuning the coordination sphere of octahedral Dy(III) complexes with silanolate/stannanolate ligands: synthesis, structures and slow relaxation of the magnetization

J. Long, A. O. Tolpygin, A. V. Cherkasov, Y. V. Nelyubina, Y. Guari, J. Larionova and A. A. Trifonov, CrystEngComm, 2021, 23, 8351 DOI: 10.1039/D1CE01266E

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