Journal
INORGANIC CHEMISTRY COMMUNICATIONS
Volume 140, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.inoche.2022.109461
Keywords
Rare earths; Single-molecule magnets; Anisotropy barrier; Magnetic properties
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Funding
- Science & Technology Development Fund of Tianjin Education Commission for Higher Education [2021KJ190]
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The two new mononuclear Dy(III) compounds exhibit different magnetic behaviors due to the substitution of different carboxylate ligands, with compound 2 showing better single-molecule magnet behavior than compound 1.
Two new mononuclear Dy(III) compounds [Dy(H2O)(4)(Htpy)(dfa)].& nbsp;2Cl (1) and [Dy(CH3OH)(Htpy)(NO3)(tma)(2)].& nbsp;CH3OH (2) (Htpy = 4'& nbsp;-(4-Hydroxyphenyl)-2,2'& nbsp;:6'& nbsp;,2 & nbsp;-terpyridine, Hdfa = difluoroacetic acid, Htma = trime-thylacetic acid) were successfully prepared by mixed-ligand strategy. Structurally, the substitution of different carboxylate ligand in 1 and 2 induces insignificant structural distortion, but causes large difference in magnetic behavior. Analysis results reveal that compound 2 shows better SMM behaviour than 1 as a result of the ferromagnetic coupling and the shorter Dy-O bond as well as a pronounced bond length difference, in which bond length distribution becomes more predominant.
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