College of Chemical Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing Tech University , Nanjing 210009 , P. R. China.
Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry , Nanjing University , Nanjing 210093 , P. R. China.
Inorg Chem. 2018 Jul 16;57(14):8608-8614. doi: 10.1021/acs.inorgchem.8b01370. Epub 2018 Jul 3.
A series of lanthanide compounds, [Ln(CHOHCHOH)(SO)]· m(CHN)· nHO (Ln = Gd (1), Sm (2), Tb (3), La (5), m = 2, n = 2; Ln = Eu (4), m = 0, n = 8), which contain Ln rings by sulfate and glycol as the ligand have been synthesized and characterized. Besides, small organic amine and l-tartaric acid act as dual templating roles during the synthetic process. Magnetic investigation of compound 1 reveals the existence of weak antiferromagnetic interactions between Gd ions and the data of magnetic entropy change (-Δ S) is 36.86 J K kg (108.55 mJ cm K) for Δ H = 7 T at 2.0 K, which is comparatively large among Gd based compounds. Additionally, because of the excellent luminescence properties of Sm, Tb, and Eu, compounds 2-4 were investigated.
一系列镧系化合物，[Ln(CHOHCHOH)(SO)]·m(CHN)·nHO（Ln = Gd（1），Sm（2），Tb（3），La（5），m = 2，n = 2；Ln = Eu（4），m = 0，n = 8），它们含有由硫酸盐和乙二醇作为配体的 Ln 环，已经被合成并进行了表征。此外，在合成过程中，小分子有机胺和 l-酒石酸充当双模板作用。化合物 1 的磁性研究表明 Gd 离子之间存在弱反铁磁相互作用，磁熵变化（-Δ S）的数据为 36.86 J K kg（108.55 mJ cm K），在 2.0 K 时的 Δ H = 7 T，这在基于 Gd 的化合物中是比较大的。此外，由于 Sm、Tb 和 Eu 的优异发光性能，对化合物 2-4 进行了研究。
