Metal chelates of sulphur-containing polyamine macrocycles and oxygenation of the corresponding cobalt(II) complexes
作者:Mutsuo Kodama、Tohru Koike、Noriko Hoshiga、Ryosuke Machida、Eiichi Kimura
DOI:10.1039/dt9840000673
日期:——
The protonation and complex formation of macrocyclic polyamines containing a sulphur donor atom, 1-thia-4,7,10-triazacyclododecane (L4) and 1-thia-4,7,11,14-tetra-azacyclohexadecane (L5), have been investigated with the metal ions CoII, NiII, CuII, HgII, and FeII. The equilibrium and kinetic constants for formation of the dioxygen adducts of the cobalt(II) chelates in aqueous solutions are also reported
含有硫供体原子1-thia-4,7,10-三氮杂环十二烷(L 4)和1-thia-4,7,11,14-四氮杂环十六烷(L 5)的大环多胺的质子化和复合物形成,我们已经用金属离子Co II,Ni II,Cu II,Hg II和Fe II进行了研究。还报告了在水溶液中形成钴(II)螯合物的双氧加合物的平衡和动力学常数,并将其与以前的类似数据进行了比较,该数据类似于含氮,氧和吡啶而不是硫的大环化合物。log K ML的值对于大环多胺,其趋势为N> S>O。L 4和L 5的钴(II)配合物的氧合生成µ-过氧加合物,与氮和氧的类似物一样,并且O 2的亲和力为N S>O。