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A slowly magnetic relaxing SmIII monomer with a D5h equatorial compressed ligand field

Authors :
Yong-Ze Pan
Ai-Ju Zhou
Li-Shan Lin
Jun-Liang Liu
Qiu-Yan Hua
Ji-Dong Leng
Yi-Bo Qiu
Wei-Quan Lin
Source :
Inorganic Chemistry Frontiers. 7:2335-2342
Publication Year :
2020
Publisher :
Royal Society of Chemistry (RSC), 2020.

Abstract

By using a bi-dentate phosphine oxide ligand L (L = bis(diphenylphosphino)methane dioxide), two mono-nuclear lanthanide complexes [LnL2(DMF)Cl2]Cl (Ln = Sm, 1; Dy, 2) with a D5h equatorial ligand field (LF) are obtained. Ab initio CASSCF calculations suggest that the equatorial LF promotes the magnetic anisotropy of the central SmIII and impair that of DyIII. Alternating current (ac) susceptibility measurements reveal that the samarium complex is the first SmIII mono-nuclear complex with slow magnetic relaxation. The isostructural DyIII compound, in contrast, relaxes much faster. Further magnetic property studies were then performed to probe the origin of magnetic anisotropy and magnetic relaxations.

Details

ISSN :
20521553
Volume :
7
Database :
OpenAIRE
Journal :
Inorganic Chemistry Frontiers
Accession number :
edsair.doi...........2e7a5f225bd9d1b48458552f9398540d