Salt of dysprosium(iii) tetrakis(hexafluoroacetylacetonate) with 1,1′-dimethyl-4,4′-bipyridinium as a new single-ion magnet

Two complex dysprosium( iii ) salts of composition Na[Dy(hfac) 4 ] (1) and Q[Dy(hfac) 4 ] 2 (2) , where hfac is the hexafluoroacetylacetonate anion and Q is 1,1′-dimethyl-4,4′-bipyridinium, were synthesized and studied by X-ray diffraction. An analysis of the X-ray diffraction data using the Shape p...

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Bibliographic Details
Published in:Russian chemical bulletin Vol. 73; no. 8; pp. 2228 - 2237
Main Authors: Stefanets, V. P., Sanina, N. A., Shilov, G. V., Dmitriev, A. I., Zhidkov, M. V., Aldoshin, S. M.
Format: Journal Article
Language:English
Published: New York Springer US 01.08.2024
Springer Nature B.V
Subjects:
Anions
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Dysprosium
Full Articles
Inorganic Chemistry
Magnetic induction
Magnetic properties
Organic Chemistry
X-ray diffraction
hexafluoroacetylacetonates
single-ion magnets
dysprosium
magnetometry
IR spectroscopy
X-ray diffraction analysis
complexes
ISSN:1066-5285, 1573-9171
Online Access:Get full text
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Summary:Two complex dysprosium( iii ) salts of composition Na[Dy(hfac) 4 ] (1) and Q[Dy(hfac) 4 ] 2 (2) , where hfac is the hexafluoroacetylacetonate anion and Q is 1,1′-dimethyl-4,4′-bipyridinium, were synthesized and studied by X-ray diffraction. An analysis of the X-ray diffraction data using the Shape program revealed noticeable distortions of two [DyO 8 ] coordination polyhedra of salt 2 anions; the Dy atoms are nonequivalent and have a biaugmented trigonal prismatic ( C 2v ) and triangular dodecahedral ( D 2d ) geometry. The experimental studies and the analysis of the magnetic properties of 2 showed that this compound exhibits a field-induced slow relaxation of magnetization, which is described by the Orbach mechanism ( U eff = 23.0 K, τ 0 = 2.68 · 10 −8 s).
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ISSN:1066-5285
1573-9171
DOI:10.1007/s11172-024-4344-1