mesomorphisms, while the derivative was not mesomorphic and did not reform crystals from its melt. Copper(II) complexes of H2L1, H2L2 and H2L4 were dimeric, while that of H2L3 was dinuclear with chelating CH3COO ligand. These complexes were paramagnetic with insignificant interactions between the copper(II) atoms and have high decomposition temperatures (Tdec = 268–304°C). Their melting temperatures (Tmelt
摘要 三
N2O4 Schiff。碱基同源物 H2L1 (n = 8)、H2L3 ((n = 9) 和 H2L4 (n = 10) 是从 2-HOC6H4CHO 与
H2N(
CH2)8-10NH2 的反应中获得的,而 H2L1 的衍
生物,即, H2
L2, 由 3,5-X2-2-HOC6H2CHO (X = 叔丁基) 与 ( )8NH2 反应得到。席夫碱 H2
L2(三斜晶系;P-1)、H2L3(单斜晶系;C2/ c) 和 H2L4(单斜;P21/c)是熔点低(低于 100°C)的单晶。同系物表现出介晶现象,而衍
生物不是介晶现象,也没有从熔体中重新形成晶体。
铜(II ) H2L1、H2
L2 和 H2L4 的配合物是二聚体,而 H2L3 的配合物是双核的,具有螯合 CH3COO
配体。这些配合物是顺磁性的,
铜 (II) 原子之间的相互作用微不足道,并且具有高分解温度 (Tdec = 268–304°C)