mixed-coordinated binuclear compound with Dy1 in a triangular dodecahedron (D2d) coordination sphere and Dy2 in a biaugmented trigonal prism (C2v) coordination sphere. Magnetic studies show that compound 2 exhibits field-induced single-molecule magnet (SMM) behavior.
Ln III离子(Gd III、Tb III或 Dy III)和三唑硝基
氮氧自由基(4-Me-3-NITtrz)作为自旋载体的组合产生两种单核和一种双核化合物,即 [Ln(hfac) 3 (4-Me-3-NITtrz)(H 2 O)] (Ln = Gd( 1 ), Tb( 2 ); hfac =
六氟乙酰丙酮; 4-Me-3-NITtrz = 2-[3-(4-甲基-l,2,4-triazolyl)]-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) 和 [Dy(hfac) 2 (4-Me-3-NITtrz) 2 ][Dy( hfac) 4 ]·CHCl 3 . 化合物1和2是同构的并在P空间群,而化合物3在P 2 1 / n空间群中结晶。在图1和图2中,中心 Ln III离子是九配位 (LnNO 8 ),由三个双螯合 hfac 阴离子和一个二齿三