Cobalt(II) bis(1,4,7-trithiacyclononane): a low-spin octahedral complex
Cobalt(II) bis(1,4,7-trithiacyclononane): a low-spin octahedral complex
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双(1,4,7-三硫杂环壬烷)钴(II)：低自旋八面体配合物
DOI：
10.1021/ic00241a024
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
R. Glass
中科院分区：
文献类型：
--
作者：
G. Wilson;D. Swanson;R. Glass
钴（II）与1，4，7-三硫杂环壬烷（1，4，7-TTCN）形成双络合物，具有前所未有的大的总形成常数8 X 1013。该复合物的有效磁化率为1.71 µ。因此，这是一种低自旋八面体Co（II）配合物，这种配合物非常罕见。Co（1，4，7-TTCN）22+的循环伏安法显示出在相对于SHE的0.573、-0.292和-0.998V处的三个扩散控制的”单电子台阶“，分别对应于Co（III）/Co（II）、Co（II）/Co（I）和Co（I）/Co（0）还原。该复合物的独特性质是由于配体构象控制。
Cobalt (II) forms a bis complex with 1, 4, 7-trithiacyclononane (1, 4, 7-TTCN) with an unprecedentedly large overall formation constant of 8 X 1013. This complex has an effective magnetic susceptibility of 1.71 µ. Thus, this is a low-spin octahedral Co (II) complex, and such complexes are exceedingly rare. Cyclic voltammetry of Co (l, 4, 7-TTCN) 22+ shows three diffusion-controlled" one-electron steps at 0.573,-0.292, and-0.998 V vs. SHE corresponding to Co (III)/Co (II), Co (II)/Co (I), and Co (I)/Co (0) reductions, respectively. The unique properties of this complex are suggested to be due to ligandconformational control.