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Single-Molecule Magnetic, Catalytic and Photoluminescence Properties of Heterometallic 3d–4f [Ln{PZn2W10O38(H2O)2}2]11− Tungstophosphate Nanoclusters
European Journal of Inorganic Chemistry ( IF 2.2 ) Pub Date : 2021-08-23 , DOI: 10.1002/ejic.202100528
Vivek Das 1 , Imran Khan 1 , Firasat Hussain 2 , Masahiro Sadakane 3 , Nao Tsunoji 3 , Katsuya Ichihashi 4 , Chisato Kato 4 , Katsuya Inoue 4 , Sadafumi Nishihara 5
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A series of eleven lanthanide containing di-Zinc (II) substituted heterometallic 3d–4f sandwich-type tungstophosphate nanoclusters [Ln{PZn2W10O38(H2O)2}2]11− (Ln=NdIII, SmIII, EuIII, GdIII, TbIII, DyIII, HoIII, ErIII, TmIII, YbIII, and LuIII) have been synthesized by a single step reaction procedure. These clusters were characterized by various analytical techniques such as single crystal X-ray diffraction (SC-XRD), fourier transform infrared (FT-IR) spectroscopy, high-resolution electro-spray ionization mass spectrometry (HR-ESI-MS), inductively coupled plasma atomic emission spectroscopy (ICP-AES), solid UV/Vis, photoluminescence spectroscopy, powder X-ray diffraction (P-XRD) and thermogravimetric analysis (TGA). All the polyanions are isostructural and consists of a lanthanide ion sandwiched between two units of (1,5) isomer of di-Zn substituted α-Keggin type tungstophosphate. The complexes Sm-2 a, Eu-3 a, Tb-5 a, and Dy-6 a show good photoluminescence behavior. The catalytic properties were examined for the oxidation of thioethers. The catalyst is stable with a high turn over frequency (TOF) of 6250 h−1 and can be recovered even after 5 consecutive cycles. Furthermore, magnetic properties revealed that Gd-4 a, Tb-5 a, Dy-6 a, Er-8 a, and Yb-10 a show single-molecule magnetic properties.

中文翻译:

异金属 3d–4f [Ln{PZn2W10O38(H2O)2}2]11− 磷酸钨纳米团簇的单分子磁性、催化和光致发光特性

一系列 11 种镧系元素含二锌 (II) 取代的异金属 3 d –4 f夹心型磷钨纳米团簇 [Ln{PZn 2 W 10 O 38 (H 2 O) 2 } 2 ] 11− (Ln=Nd III , Sm III、Eu III、Gd III、Tb III、Dy III、Ho III、Er III、Tm III、Yb III和Lu III) 是通过一步反应程序合成的。这些团簇通过各种分析技术进行表征,例如单晶 X 射线衍射 (SC-XRD)、傅里叶变换红外 (FT-IR) 光谱、高分辨率电喷雾电离质谱 (HR-ESI-MS)、电感耦合等离子体原子发射光谱 (ICP-AES)、固体 UV/Vis、光致发光光谱、粉末 X 射线衍射 (P-XRD) 和热重分析 (TGA)。所有的聚阴离子都是同构的,由夹在二锌取代的α - Keggin 型钨磷酸盐的 ( 1,5 ) 异构体的两个单元之间的镧系离子组成。配合物Sm-2 aEu-3 aTb-5 aDy-6 a表现出良好的光致发光行为。检查了硫醚氧化的催化性能。该催化剂稳定,具有 6250 h -1的高转换频率 (TOF),即使在连续 5 次循环后也可以恢复。此外,磁性表明Gd-4aTb-5aDy-6aEr-8aYb-10a显示单分子磁性。
更新日期:2021-10-01
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