Coordination of ortho and para quinones and oxidation reduction processes in trimethylphosphine complexes of cobalt and nickel
作者:Hans-Friedrich Klein、Emmanuel Auer、Attila Dal、Ute Lemke、Mathias Lemke、Thomas Jung、Caroline Röhr、Ulrich Flörke、Hans-Jürgen Haupt
DOI:10.1016/s0020-1693(99)00008-0
日期:1999.4
oxidatively substitute trimethylphosphine into Ni(PMe3)4 affording molecular compounds containing chelating dioxo ligands of the catecholate type. Using CoMe(PMe3)4 as a substrate the synthesis was extended to tetrachlorobenzoquinone-1,2 and dibenzoyl with retention of the CoMe group. Formally omitting the methyl group, odd-electron complexes were obtained from Co(cyclopentene)(PMe3)3 by reaction with 9
摘要邻醌9,10-菲醌,1,2-萘醌和3,5-二叔丁基-苯醌-1,2将三甲基膦氧化取代为Ni(PMe3)4,从而得到含有螯合二氧杂配体的分子化合物儿茶酚型。使用CoMe(PMe3)4作为底物,在保留CoMe基团的情况下,将合成扩展到四氯苯醌-1,2和二苯甲酰基。在形式上省略甲基,通过与9,10-菲醌或二苯甲酰基反应从Co(环戊烯)(PMe3)3获得奇电子配合物。对醌2,5-二叔丁基苯醌-1,4和2-叔丁基萘醌-5,10取代了Ni(PMe3)4中的两个三甲基膦,形成了零价镍的二烯配合物。X射线晶体结构确定O的存在: