Hu Peng, Li Shanghua, Cao Linghui, Liu Aogang, Zhuang Gui-Lin, Ji Liudi, Li Bao
Hubei Key Laboratory of Radiation Chemistry and Functional Materials, Non-power Nuclear Technology Collaborative Innovation Center, Hubei University of Science and Technology, Xianning, Hubei437100, China.
Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei430074, China.
ACS Omega. 2022 Oct 19;7(43):38782-38788. doi: 10.1021/acsomega.2c04412. eCollection 2022 Nov 1.
Starting from a dinuclear complex {Gd(L)(NO)(HO)}·2(CHCN) () based on 2,6-dimethoxyphenol (HL), a nonanuclear cluster {Gd(L)(μ-OH)(μ-OH)(μ-OCH)(NO) (HO)}(OH)·2HO () was obtained via modulating the amount of the ligand and base. Both of them have been structurally and magnetically characterized. Complex decorates the Gd core bridged by double μ-phenoxyl oxygen atoms and coordinated neutral CHCN molecules, while features the Gd core with a sandglass-like topology. Magnetic investigations reveal that the weaker antiferromagnetic interactions between adjacent metal ions exist in complex than in , which is in agreement with the theoretical results. Meanwhile, the magnetocaloric effect with a maximum -Δ value changes from 27.32 to 40.60 J kg K at 2 K and 7 T.
从基于2,6-二甲氧基苯酚（HL）的双核配合物{Gd(L)(NO)(HO)}·2(CHCN)（）出发，通过调节配体和碱的量获得了九核簇合物{Gd(L)(μ-OH)(μ-OH)(μ-OCH)(NO)(HO)}(OH)·2HO（）。它们都已通过结构和磁性表征。配合物用双μ-苯氧基氧原子桥连的Gd核和配位的中性CHCN分子进行修饰，而则具有沙漏状拓扑结构的Gd核。磁性研究表明，配合物中相邻金属离子之间的反铁磁相互作用比中弱，这与理论结果一致。同时，在2 K和7 T时，最大-Δ值的磁热效应从27.32 J kg K变化到40.60 J kg K。
