Magnetic Properties of a Single-Molecule Lanthanide-Transition-Metal Compound Containing 52 Gadolinium and 56 Nickel Atoms

Da-Peng Liu; Xin-Ping Lin; Hui Zhang; Xiu-Ying Zheng; Gui-Lin Zhuang; Xiang-Jian Kong; La-Sheng Long; Lan-Sun Zheng

doi:10.1002/anie.201601199

Magnetic Properties of a Single-Molecule Lanthanide-Transition-Metal Compound Containing 52 Gadolinium and 56 Nickel Atoms

Angew Chem Int Ed Engl. 2016 Mar 24;55(14):4532-6. doi: 10.1002/anie.201601199. Epub 2016 Feb 29.

Authors

Da-Peng Liu¹, Xin-Ping Lin¹, Hui Zhang¹, Xiu-Ying Zheng¹, Gui-Lin Zhuang², Xiang-Jian Kong³, La-Sheng Long⁴, Lan-Sun Zheng¹

Affiliations

¹ Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
² College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310032, China. glzhuang@zjut.edu.cn.
³ Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China. xjkong@xmu.edu.cn.
⁴ Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surface and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China. lslong@xmu.edu.cn.

PMID: 26923173
DOI: 10.1002/anie.201601199

Abstract

Monodisperse metal clusters provide a unique platform for investigating magnetic exchange within molecular magnets. Herein, the core-shell structure of the monodisperse molecule magnet of [Gd52 Ni56 (IDA)48 (OH)154 (H2 O)38 ]@SiO2 (1 a@SiO2 ) was prepared by encapsulating one high-nuclearity lanthanide-transition-metal compound of [Gd52 Ni56 (IDA)48 (OH)154 (H2 O)38 ]⋅(NO3 )18 ⋅164 H2 O (1) (IDA=iminodiacetate) into one silica nanosphere through a facile one-pot microemulsion method. 1 a@SiO2 was characterized using transmission electron microscopy, N2 adsorption-desorption isotherms, and inductively coupled plasma-atomic emission spectrometry. Magnetic investigation of 1 and 1 a revealed J1 =0.25 cm(-1) , J2 =-0.060 cm(-1) , J3 =-0.22 cm(-1) , J4 =-8.63 cm(-1) , g=1.95, and z J=-2.0×10(-3) cm(-1) for 1, and J1 =0.26 cm(-1) , J2 =-0.065 cm(-1) , J3 =-0.23 cm(-1) , J4 =-8.40 cm(-1) g=1.99, and z J=0.000 cm(-1) for 1 a@SiO2 . The z J=0 in 1 a@SiO2 suggests that weak antiferromagnetic coupling between the compounds is shielded by silica nanospheres.

Keywords: core-shell nanoparticles; lanthanide-transition-metal compounds; magnetic properties; silica; single molecules.

Publication types

Research Support, Non-U.S. Gov't