Sato Rinta, Suzuki Kosuke, Minato Takuo, Shinoe Masahiro, Yamaguchi Kazuya, Mizuno Noritaka
Department of Applied Chemistry, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
Chem Commun (Camb). 2015 Mar 7;51(19):4081-4. doi: 10.1039/c4cc09435b.
Herein, we report for the first time polyoxometalate (POM)-based single-molecule magnets with mononuclear transition metal cores. The mononuclear Fe(III)-, Co(II)-, and Mn(III)-containing POMs have successfully been synthesized from a trivacant lacunary Keggin-type silicotungstate precursor TBA4H6[A-α-SiW9O34]·2H2O (TBA = tetra-n-butylammonium), and the highly distorted octahedral geometries of the incorporated metal cations resulted in the magnetic anisotropies and the single-molecule magnet behavior with mononuclear paramagnetic metal ions under the applied dc field.
在此，我们首次报道了具有单核过渡金属核的基于多金属氧酸盐（POM）的单分子磁体。含单核铁（III）、钴（II）和锰（III）的多金属氧酸盐已成功地由三缺位的缺位型Keggin结构硅钨酸盐前体四正丁基铵盐TBA4H6[A-α-SiW9O34]·2H2O（TBA = 四正丁基铵）合成，并且所引入金属阳离子的高度扭曲八面体几何结构导致了磁各向异性以及在施加直流磁场下单核顺磁性金属离子的单分子磁体行为。
