摘要
新型簇合物（ｎ－Ｂｕ４Ｎ）２［Ｆｅ４Ｓ４（ｔｐｂｔ）４］（ｔｐｂｔ＝２，４，６－三苯基苯硫酚基）通过２，４，６－三苯基苯硫酚和（ｎ－Ｂｕ４Ｎ）２［Ｆｅ４Ｓ４（Ｓ－ｔ－Ｂｕ）４］在ＤＭＦ（二甲基甲酰胺）中进行配体交换反应合成得到。该簇合物在ＣＨ３ＣＮ溶液中的［Ｆｅ４Ｓ４］３＋／２＋和［Ｆｅ４Ｓ４］２＋／１＋的氧化还原电位分别为－０．１４和－１．３１ＶｖｓＳＣＥ（甘汞电极）。这个结果显示具有庞大位阻的２，４，６－三苯基苯硫酚配体使得其４Ｆｅ４Ｓ簇合物的［Ｆｅ４Ｓ４］３＋态相对稳定。
Ueno Takafumi Ueyama Norikazu Nakamura Akira(Department of Macromolecular Science, Faculty of Science, Osaka University, Toyonaka, Osaka 560, Japan) A novel cluster, (nBu4N)2[Fe4S4(tpbt)4](tpbt=2,4,6triphenylbenzenethiolato), was synthesized by ligandexchange reaction of (nBu4N)2([Fe4S4(StBu)4]with 2,46triphenylbenzenethiol in DMF. The cluster shows [Fe4S4]3+/2+ and [Fe4S4]2+/1+ redox potentials at 0.14 and 1.31 V vs. SCE, respectively in acetonitrile. The result suggests that the 3+ state of [Fe4S4] core is stabilized relatively by the bulky tpbt ligand.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1998年第1期105-108,共4页
Chinese Journal of Inorganic Chemistry
