Issue 16, 2013
From the journal:

Dalton Transactions

New 3d–4f heterometallic clusters built from mixed glycine and iminodiacetate acid: dioctahedron {La2Ni9} and onion-like {Gd5}⊂{Ni12} with interesting magnetocaloric effect†

Zhong-Yi Li,ab   Jiang Zhu,c   Xiao-Qun Wang,a   Jun Ni,a   Jian-Jun Zhang,*a   Shu-Qin Liua  and  Chun-Ying Duan*ab  

* Corresponding authors

a Chemistry College, Dalian University of Technology, Dalian 116024, China
E-mail: zhangjj@dlut.edu.cn

b State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, China
E-mail: cyduan@dlut.edu.cn

c School of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China

Abstract

The preparation, structures and properties of 3d–4f compounds, undecanuclear [La2Ni9(Gly)12(IDA)3(μ3-OH)3][La(H2O)9][Na3(H2O)7(ClO4)3](ClO4)6·5H2O (1) and isostructural heptadecanuclear [Ln5Ni12(Gly)12(IDA)6(μ3-OH)9(H2O)3](ClO4)6·11H2O (Ln = Gd (2); Nd (3); Sm (4); Tb (5); Dy (6); Y (7)) based on mixed glycine (HGly) and iminodiacetate acid (H2IDA) ligands were described. The structure of the [La2Ni9(μ3-OH)3(IDA)3(Gly)12]3+ cationic cluster in 1 can be described as a face-shared and La-centered dioctahedron. However, the [Ln5Ni12(Gly)12(IDA)6(μ3-OH)9(H2O)3]6+ cationic clusters in 2–7 bear an onion-like {Ln5}⊂{Ni12} structure, where the trigonal bipyramid {Ln5} core is encapsulated by the outer triangular orthobicupola {Ni12} shell. Magnetic studies have been performed for these compounds, and 2 displays dominant ferromagnetic coupling and has a large magnetocaloric effect (21.8 J kg−1 K−1, ΔH = 7 T).

Graphical abstract: New 3d–4f heterometallic clusters built from mixed glycine and iminodiacetate acid: dioctahedron {La2Ni9} and onion-like {Gd5}⊂{Ni12} with interesting magnetocaloric effect

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Article information

DOI
https://doi.org/10.1039/C3DT32752C
Article type
Paper
Submitted
18 Nov 2012
Accepted
16 Jan 2013
First published
23 Jan 2013

Dalton Trans., 2013,42, 5711-5717

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New 3d–4f heterometallic clusters built from mixed glycine and iminodiacetate acid: dioctahedron {La2Ni9} and onion-like {Gd5}⊂{Ni12} with interesting magnetocaloric effect

Z. Li, J. Zhu, X. Wang, J. Ni, J. Zhang, S. Liu and C. Duan, Dalton Trans., 2013, 42, 5711 DOI: 10.1039/C3DT32752C

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