Gu Ya-Nan, Chen Yi, Wu Yan-Lan, Zheng Shou-Tian, Li Xin-Xiong
State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry , Fuzhou University , Fuzhou , Fujian 350108 , China.
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter , Chinese Academy of Sciences , Fuzhou , Fujian 350108 China.
Inorg Chem. 2018 Mar 5;57(5):2472-2479. doi: 10.1021/acs.inorgchem.7b02728. Epub 2018 Feb 14.
Four seven-nuclearity 3d-4f heterometallic cluster {FeLnO} substituted polyoxometalates (HPz)KFeLn(μ-O)(B-α-GeWO)(GeWO)· xHO (1-Ln, Pz = piperazine, Ln = Tb, Dy, Ho, Er for x = 27, 25, 25, 24, respectively) have been hydrothermally prepared and structurally characterized by single-crystal X-ray diffraction, powder X-ray diffraction, infrared spectrometry, thermogravimetric analyses, elemental analyses, and electrospray ionization mass spectrometry. Single-crystal X-ray diffraction analyses revealed that 1-Ln contain an unprecedented banana-shaped polyanion constructed from an iron-lanthanide heterometallic {FeLnO} cluster, two trilacunary {B-α-GeWO} units, and one hexalacunary {GeWO} fragment. The magnetic susceptibility surveying proved the presence of antiferromagnetic coupling in 1-Ln.
四种七核3d-4f异金属簇合物{FeLnO}取代的多金属氧酸盐(HPz)KFeLn(μ-O)(B-α-GeWO)(GeWO)·xHO(1-Ln，Pz = 哌嗪，Ln = Tb、Dy、Ho、Er，x分别为27、25、25、24)已通过水热法制备，并通过单晶X射线衍射、粉末X射线衍射、红外光谱、热重分析、元素分析和电喷雾电离质谱对其结构进行了表征。单晶X射线衍射分析表明，1-Ln包含一个前所未有的香蕉形聚阴离子，它由一个铁-镧系异金属{FeLnO}簇、两个三缺位{B-α-GeWO}单元和一个六缺位{GeWO}片段构成。磁化率测量证明1-Ln中存在反铁磁耦合。
