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Tuning the Ferrotoroidic Coupling and Magnetic Hysteresis in Double‐Triangle Complexes {Dy 3 M III Dy 3 } via the M III ‐linker
Author(s) -
Ashtree Jared M.,
Borilović Ivana,
Vignesh Kuduva R.,
Swain Abinash,
Hamilton Sarah H.,
Whyatt Yasmin L.,
Benjamin Sophie L.,
Phonsri Wasinee,
Forsyth Craig M.,
Wernsdorfer Wolfgang,
Soncini Alessandro,
Rajaraman Gopalan,
Langley Stuart K.,
Murray Keith S.
Publication year - 2021
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202001082
Subject(s) - chemistry , dysprosium , diamagnetism , ion , paramagnetism , crystallography , magnetic hysteresis , hysteresis , coupling (piping) , coercivity , analytical chemistry (journal) , inorganic chemistry , magnetization , magnetic field , condensed matter physics , physics , materials science , organic chemistry , chromatography , quantum mechanics , metallurgy
We present the syntheses, structures, magnetic data and theoretical analyses for two families of heptanuclear clusters, wherein two staggered dysprosium(III) triangles are linked by various M(III) d‐/p‐block ions. The families differ in the counter‐anion and are of formulae [Dy III 6 M III (OH) 8 ( o ‐tol) 12 (MeOH) 5 (NO 3 )] ⋅ 4MeOH and [Dy III 6 M III (OH) 8 ( o ‐tol) 12 (MeOH) 6 ]Cl ⋅ 6MeOH (M=Cr, Mn, Fe, Co, Al; o ‐tol= o ‐toluate). We find that variation of the central metal ion M is crucial in tuning the toroidal moments on the triangular units, with diamagnetic M linking ions enhancing the ferrotoroidic coupling. By detailed simulation and analysis of various magnetic measurements, including sub‐kelvin microSquid hysteresis loops, we identified the specific signature of the M linking ions’ modulation of toroidal properties, including the mechanism whereby anisotropic, paramagnetic M ions lead to hysteresis profiles with larger remnant magnetisations and broader coercive fields.