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Single molecule magnetic behaviour in lanthanide naphthalenesulfonate complexes
journal contribution
posted on 2023-06-09, 15:57 authored by Guo Peng, Ying-Ying Zhang, Bo Li, Xiao-Fan Sun, Hong-Ling Cai, De-Jing Li, Zhi-Gang Gu, George KostakisGeorge KostakisThe use of 2-naphthalenesulfonate (NAS) ligand in lanthanide chemistry afforded a family of isostructural mononuclear lanthanide complexes with formula [Ln(NAS)2(H2O)6](NAS)·3H2O [Ln = Tb (1), Dy (2), Er (3), Yb (4)]. Crystallographic studies determine a square antiprismatic geometry (D4d) for the Ln centre and crystallization in unprecedented chiral space group. The latter was further confirmed by the observation of Cotton effects in single crystal circular dichroism (CD) spectra. Static and dynamic magnetic measurements identify weak intermolecular dipolar interactions in 2, and such effects can be waived by dilution, which was noted by the detection of zero-field single molecule magnet (SMM) behaviour and hysteresis loop in the magnetically diluted sample (5). Compounds 2-4 exhibit SMM behaviours with energy barriers of 53, 32 and 45 K, respectively. To the best of our knowledge, these complexes provide the first examples of pure 4f sulfonate-based SMMs.
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Publication status
- Published
File Version
- Accepted version
Journal
Dalton TransactionsISSN
1477-9226Publisher
Royal Society of ChemistryExternal DOI
Volume
47Page range
17349-17356Department affiliated with
- Chemistry Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-11-20First Open Access (FOA) Date
2019-11-19First Compliant Deposit (FCD) Date
2018-11-19Usage metrics
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