Superb Alkali-Resistant DyIII2NiII4 Single-Molecule Magnet

Panpan Yang; Huancheng Hu; Shui Yu; Dongcheng Liu; Yuning Liang; Huahong Zou; Fupei Liang; Zilu Chen

doi:10.1021/acs.inorgchem.1c01963

Superb Alkali-Resistant Dy^III₂Ni^II₄ Single-Molecule Magnet

Inorg Chem. 2021 Oct 4;60(19):14752-14758. doi: 10.1021/acs.inorgchem.1c01963. Epub 2021 Sep 16.

Authors

Panpan Yang¹, Huancheng Hu¹, Shui Yu¹, Dongcheng Liu¹, Yuning Liang¹, Huahong Zou¹, Fupei Liang^{1

2}, Zilu Chen¹

Affiliations

¹ State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, People's Republic of China.
² Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, People's Republic of China.

PMID: 34530617
DOI: 10.1021/acs.inorgchem.1c01963

Abstract

A superb alkali-resistant single-molecule-magnet (SMM) material with the molecular formula [Dy₂Ni₄(L)₈(CH₃COO)₄(NO₃)₂] (1) (HL = 8-hydroxyquinoline) has been structurally and magnetically characterized. Single-crystal X-ray diffraction revealed that 1 possesses a hexanuclear [Dy^III₂Ni^II₄] cluster, which is built by two triangular [Dy^IIINi^II₂] cores double-bridged through two CH₃COO^- ions. Interestingly, 1 can keep its original structure in dilute acid and common basic solutions (e.g., triethylamine and NaOH). More importantly, 1 is still stable after treatment with a 20 M NaOH aqueous solution for 1 month at room temperature. Magnetic measurements uncovered that 1 is an SMM under zero applied field with U_eff = 7.43 K. To the best of our knowledge, 1 is the first example of a 3d-4f SMM with such extreme alkali resistance. This work will broaden the vision of preparing SMM materials with excellent chemical stability.