Insertion of single-ion magnets based on mononuclear Co(<scp>ii</scp>) complexes into ferromagnetic oxalate-based networks
作者:M. Palacios-Corella、V. García-López、C. Sánchez-Sánchez、J. M. Clemente-Juan、M. Clemente-León、E. Coronado
DOI:10.1039/d1dt00595b
日期:——
The 1 : 2 and 1 : 1 Co(II) complexes of the L ligand (L = 6-(3,5-diamino-2,4,6-triazinyl)2,2′-bipyridine) with formulas [CoII(L)2](ClO4)2·0.5MeCN·Et2O (1) and [CoII(L)(CH3CN)2(H2O)](ClO4)2·MeCN (2) have been prepared. The structural and magnetic characterization of the two compounds shows that they contain octahedral high-spin Co(II) and present a field-induced slow relaxation of the magnetization
L 配体 (L = 6-(3,5-diamino-2,4,6-triazinyl)2,2'-bipyridine)的 1 : 2 和 1 : 1 Co( II ) 配合物具有式 [Co II ( L) 2 ](ClO 4 ) 2 ·0.5MeCN·Et 2 O ( 1 ) 和 [Co II (L)(CH 3 CN) 2 (H 2 O)](ClO 4 ) 2 ·MeCN ( 2 )准备好了。这两种化合物的结构和磁性表征表明它们含有八面体高自旋Co( II ),并呈现出场诱导的磁化缓慢弛豫。1已被插入到基于草酸盐的双金属网络中,产生了一种新的非手性 3D 化合物,其分子式为 [Co II (L) 2 ][Mn II Cr III (ox) 3 ] 2 ·(solvate) ( 3 ),其铁磁有序度低于 4.6 K. EPR 测量表明两个亚晶格之间存在弱磁耦合。