co-ordiante to metal ions as a hexadentate ligand; whereas M–N distances for the NiII complex are ‘normal,’ those for the CoIII complex are unusually short, and this is reflected in a very negative CoIII/II redox couple and a significant shift of the electronic spectrum mmaxima to higher energy.
取代的Cyclam大环6,13-二
氨基-6,13-二
甲基-
1,4,8,11-四氮杂环十四烷(L 2)可以与六价齿
配体的
金属离子共正构。Ni II络合物的M–N距离是“正常”的,而Co III络合物的M–N距离异常短,这反映在非常负的Co III / II
氧化还原对和电子光谱mmaxima向更高的显着偏移上活力。