isomers. The cobalt(III), nickel(II), copper(II) and zinc(II) complexes of isomers A and B were prepared and investigated by near-ultraviolet, visible, infrared, NMR and ESR measurements. The ligand-field band in the 15 000-30 000 cm−1 region for the cobalt(III), nickel(II) and copper(II) complexes provided information on their geometry around the central metal atom. That is to say, the cobalt(III) complexes
摘要1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22-Docosahydrodibenzo [b,i通过苯并类似物的氢化制备[1,4,8,11]四氮杂环十四癸。由于氢化反应,五种异构体是可行的,但仅分离出两种:异构体A(熔点158.5–161.0°C)和异构体B(熔点194.5–196.0°C)。开始13 C NMR研究以清除异构体之间的构象差异。制备了异构体A和B的
钴(III),
镍(II),
铜(II)和
锌(II)配合物,并通过近紫外,可见光,红外,NMR和ESR测量进行了研究。
钴(III),
镍(II)和
铜(II)配合物在15,000-30 000 cm-1区域的
配体场带提供了有关中心
金属原子周围几何形状的信息。也就是说,
钴(III)配合物受到八面体
配体场的轴向伸长。异构体A的
铜(II)配合物和
镍-(II)配合物在这些配合物中