Synthesis, structure and magnetic properties of two mixed-valence icosanuclear nanocages
作者:Hui Wang、Xiaoling Xu、Yimin Jiang、Pengfei Yao、Bo Li、Huahong Zou、Jinglin Zhou、Zilu Chen
DOI:10.1039/c8dt03444c
日期:——
The reactions of 3,3′-bis(5-mercapto-1,2,4-triazole) with Co(II) and Ni(II) ions, respectively, gave two nanospheric mixed-valence icosanuclear cage-like complexes [M20L12](SO4)2·6DMF·CH3OH·3H2O (M = Co, 1; Ni, 2) with the in situ generated oxalyldithiosemicarbazide (H4L) as ligand. The eight octahedral M(II) ions and twelve square-planar M(III) ions in the two complexes are linked by twelve three-connecting
3,3'-双(5-巯基-1,2,4-三唑)分别与Co(II)和Ni(II)离子反应,得到两种纳米球形混合价二十碳五碳环笼形复合物[M 20 L 12 ](SO 4)2 ·6DMF·CH 3 OH·3H 2 O(M = Co,1 ; Ni,2),以原位生成的草酰二硫代氨基脲(H 4 L)作为配体。两个络合物中的八个八面体M(II)离子和十二个正方形平面M(III)离子通过L 4−的十二个三连接接头相连,以构建二十核[MII 8 M III 12 L 12 ] 4+纳米笼,带有内部立方M II 8笼芯。他们的笼子骨架在水中是稳定的。硫酸根阴离子驻留在笼门上。两种配合物的磁性测量表明,两种配合物中金属离子之间都存在主要的反铁磁相互作用。