Synthesis, Structural Characterization and Magnetocaloric Effect of a Butterfly [CoⅡ2GdⅢ2] Cluster  

作　　者：LIU Tong HUANG Yuan-Mei ZOU Hua-Hong WANG Hai-Ling LIANG Fu-Pei 刘通;黄渊梅;邹华红;汪海玲;梁福沛(State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy of Guangxi Normal University, Guilin 541004, China;Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China)

机构地区：[1]State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry & Pharmacy of Guangxi Normal University, Guilin 541004, China [2]Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China

出　　处：《Chinese Journal of Structural Chemistry》2019年第7期1152-1158,共7页结构化学（英文）

基　　金：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)

摘　　要：2-（2,3-Dihydroxpropyliminomethyl）6-methoxyphenol（H3L）, trimethylacetic acid（Hpiv）, Gd（NO3）3·6 H2O and Co（NO3）2·6 H2O were reacted in Me OH to obtain a heterometallic tetranuclear cluster [Gd2Co2（L）2（μ3-OH）2（piv）6]·2 Hpiv·2 CH3OH（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 P1 with a =11.9798（6）, b = 12.0877（5）, c = 15.0367（7） ?, α = 67.320（4）°, β = 81.583（4）°, γ = 75.201（4）°, V =1939.62（18） ?3, Z = 1, T = 293.15 K, R = 0.048 and w R = 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.

关 键 词：TETRANUCLEAR CLUSTER HETEROMETALLIC crystal structure MAGNETOCALORIC effect 

分 类 号：O641.4[理学—物理化学]