Russian Doll-like 3d–4f Cluster Wheels with Slow Relaxation of Magnetization
Lan Liu,
Panpan Yang,
Zhihui Qiu,
Kai Wang,
Dongcheng Liu,
Yuning Liang,
Huancheng Hu,
Huahong Zou,
Fupei Liang,
Zilu Chen
Affiliations
Lan Liu
School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
Panpan Yang
School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
Zhihui Qiu
School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
Kai Wang
Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China
Dongcheng Liu
School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
Yuning Liang
School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
Huancheng Hu
School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
Huahong Zou
School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
Fupei Liang
School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
Zilu Chen
School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
The solvothermal reactions of LnCl3·6H2O and MCl2·6H2O (M = Co, Ni) with 2,2′-diphenol (H2L1) and 5,7-dichloro-8-hydroxyquinoline (HL2) gave three 3d–4f heterometallic wheel-like nano-clusters [Ln7M6(L1)6(L2)6(µ3-OH)6(OCH3)6Cl(CH3CN)6]Cl2·xH2O (Ln = Dy, M = Co, x = 3 for 1; Ln = Dy, M = Ni, x = 0 for 2; Ln = Tb, M = Ni, x = 0 for 3) with similar cluster structure. The innermost Ln(III) ion is encapsulated in a planar Ln6 ring which is further embedded in a chair-conformation M6 ring, constructing a Russian doll-like 3d–4f cluster wheel Ln(III)⸦Ln6⸦M6. 2 and 3 show obvious slow magnetic relaxation behavior with negligible opening of the magnetic hysteresis loop. Such a Russian doll-like 3d–4f cluster wheel with the lanthanide disc isolated by transition metallo-ring is rarely reported.
