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Chiral and kryptoracemic Dy(III) complexes with field-induced single molecule magnet behavior
journal contribution
posted on 2023-06-09, 14:07 authored by Ying-Ying Zhang, Jing-Tao Yu, Bo Li, De-Jing Li, Zhi-Gang Gu, Xiao-Fan Sun, Hong-Ling Cai, George KostakisGeorge Kostakis, Guo PengTwo mononuclear Dy(III) compounds formulated as [Dy(PNO)6(H2O)2]Br3 (1) and [Dy(PNO)6(NO3)](ClO4)2 (2) have been synthesized and characterized. Single crystal X-ray diffraction studies show that chiral and kryptoracemic strcuctures are formed when different anions are introduced into the system. 1 crystallizes in the non-polar orthorhombic space group P212121, whereas 2 assembles as a kryptoracemate in the polar monoclinic space group P21. The optical activity of single crystals of these two compounds was confirmed by circular dichroism (CD) studies. Thermal gravimetric analyses (TGA) revealed that they are stable up to 376 K (1) and 428 K (2). Differential scanning calorimetry (DSC) measurements demonstrate the absence of structural phase transitions over the investigated temperature range. Magnetic studies show that both compounds are field-induced single molecule magnets (SMMs) with energy barriers of 36 (± 0.8) K for 1 and 32 (± 1.4) K for 2. Furthermore, the dielectric and ferroelectric properties of compound 2 were also investigated.
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Publication status
- Published
File Version
- Accepted version
Journal
CrystEngCommISSN
1466-8033Publisher
Royal Society of ChemistryExternal DOI
Issue
32Volume
20Page range
4582-4589Department affiliated with
- Chemistry Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-07-10First Open Access (FOA) Date
2019-07-11First Compliant Deposit (FCD) Date
2018-10-24Usage metrics
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