Two new Co(II) coordination polymers based on redox-active ligands: Structure, Chromism and Magnetism
作者:Wen-Jing Xu、Kun-Peng Chen、Yue Zhang、Yue Ma、Quan-Wen Li、Qing-Lun Wang
DOI:10.1016/j.molstruc.2021.129948
日期:2021.5
By utilizing redox-active ligands [monoquaternized 4,4′-bipyridines (monoquats) and naphthalene diimide derivatives] and dicyanamide (dca) bridges, two new Co(II) complexes, [Co(dca)2(DPNDI)]n⋅2nDMF⋅nH2O (1) and [Co(EQ)2(dca)2]nI2n⋅4nH2O (2), have been synthesized (DPNDI = N,N'-di(3-pyridyl)-1,4,5,8-naphthalene tetracarboxydiimide, EQI = 1-ethyl-4-(4-pyridyl) pyridinium iodide). Complex 1 is a 2D network
通过利用氧化还原活性的配体[monoquaternized 4,4'-联吡啶(monoquats)和萘二酰亚胺衍生物]和二氰胺(DCA)桥梁,两个新的Co(II)络合物,[CO(DCA)2(DPNDI)] Ñ ⋅2nDMF ⋅nH 2 O(1)和[CO(EQ)2(DCA)2 ] ñ我的2n ⋅4nH 2 O(2),已经合成了(DPNDI = ñ,N'-二(3-吡啶基)-1, 4,5,8-萘四羧二酰亚胺,EQI = 1-乙基-4-(4-吡啶基)碘化吡啶鎓)。配合物1是2D网络,其中[Co(dca)2 ] n的1D链通过DPNDI配体连接形成2D层。在复杂的2中,[Co(EQ)2(dca)的1D链2 ] n垂直交叉。有趣的是,配合物1是光致变色的,而配合物2是光致变色和热致变色的。此外,还研究了它们的磁性能。