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| Synthesis, Structural Characterization and Magnetocaloric Effect of a Butterfly [CoII2GdIII2] Cluster |
| LIU Tong;HUANG Yuan-Mei;ZOU Hua-Hong;WANG Hai-Ling;LIANG Fu-Pei |
a (State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy of Guangxi Normal University, Guilin 541004, China)
b (Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering,Guilin University of Technology, Guilin 541004, China)
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Abstract 2-(2,3-Dihydroxpropyliminomethyl)6-methoxyphenol (H3L), trimethylacetic acid (Hpiv), Gd(NO3)3·6H2O and Co(NO3)2·6H2O were reacted in MeOH to obtain a heterometallic tetranuclear cluster [Gd2Co2(L)2(μ3-OH)2(piv)6]·2Hpiv·2CH3OH (1). X-ray crystallographic analysis reveals that compound 1 was found to be a butterfly heterometallic tetranuclear cluster. The crystal (C64H108Co2Gd2N2O28, Mr = 1785.88) belongs to the triclinic crystal system, space group P with a = 11.9798(6), b = 12.0877(5), c = 15.0367(7) Å, α = 67.320(4)°, β = 81.583(4)°, γ = 75.201(4)°, V = 1939.62(18) Å3, Z = 1, T = 293.15 K, R = 0.048 and wR = 0.144 for 16299 observed reflections with I > 2σ(I). In magnetization study, heterometallic 1 exhibits magnetocaloric effect (MCE) of 14.75 J·kg−1·K−1 at 2 K for ΔH = 5 T, while it does not show non-linear response of the ac-susceptibilities.
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Received: 27 August 2018
Published: 12 July 2019
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| Fund: This work was supported by the National Natural Science Foundation of China (No. 21771043, 51572050 and 21601038),Guangxi Natural Science Foundation (No. 2015GXNSFDA139007 and 2016GXNSFAA380085), Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials (EMFM20162107) |
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Corresponding Authors:
fliangoffice@yahoo.com and gxnuchem@foxmail.com
E-mail: fliangoffice@yahoo.com and gxnuchem@foxmail.com
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2019, Vol. 38 
