【摘要】 由苯并-15-冠-5经硝化、还原和缩合反应,制备了4＇-（2-羟基苯亚甲基亚氨基）苯并-15-冠-5（L¹H）和4＇,5＇-双（2-羟基苯亚甲基亚氨基）苯并-15-冠-5（L⁴H₂）以及它们的取代衍生物L²H和L⁵H₂.在不同温度和不同轴配体存在下,测定了它们的钴（Ⅱ）配合物的氧合常数和ΔH°,ΔS°,并与未冠醚化的类似物CoL₂³和CoL⁶比较,讨论了配体结构和轴配体碱性对配合物的氢分子加合性能的影响.更多还原

【Abstract】 Four crowned mono-and bis-Schiff bases, 4’-(2-hydroxyphenylmethylideneimino) benzo-15-crown-5 (L1H) and 4’, 5’-bis (2-hydroxyphenylmethylideneimino) benzo-15-crown-5 (L4H2) as well as their substituted derivatives L2H,L5H2 were prepared from benzo-15-crown-5 via nitration, reduction, and condensation. Equilibrium constants and thermodynamic constants △H°, △S° for oxygenation of these crowned cobalt(Ⅱ) Schiff bass compleses were measured. The influence of ligand structure and basicity of axial ligand on the affinities of the complexes for dioxygen was discussed in comparison with uncrowned analoques.更多还原