Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan.
Dalton Trans. 2010 Oct 21;39(39):9229-31. doi: 10.1039/c0dt00009d. Epub 2010 Apr 21.
An anionic ruthenium sandwich complex featuring the tetrasilacyclobutadiene ligand, η(4)-tetrakis(di-tert-butylmethylsilyl)tetrasilacyclobutadieneruthenium was synthesized and isolated as its potassium salt (η(4)-R(4)Si(4))RuCp*·[K(+)(thf)(2)] (R = SiMet-Bu(2), Cp* = η(5)-Me(5)C(5)), 1(-)·[K(+)(thf)(2)], by the reaction of the tetrasilacyclobutadiene dianion dipotassium salt R(4)Si(4)·K(+)(thf)(2) with 0.25 equiv. of Cp*RuCl in THF. In its crystalline form, 1(-)·[K(+)(thf)(2)] features a nearly square-planar tetrasilacyclobutadiene ligand.
一种阴离子钌夹心配合物，具有四硅杂环丁二烯配体η(4)-四(二-叔丁基甲基硅基)四硅杂环丁二烯钌，作为其钾盐(η(4)-R(4)Si(4))RuCp*·[K(+)(thf)(2)] (R = SiMet-Bu(2), Cp* = η(5)-Me(5)C(5))，1(-)·[K(+)(thf)(2)]，通过四硅杂环丁二烯二阴离子二钾盐R(4)Si(4)·K(+)(thf)(2)与 0.25 当量的Cp*RuCl在 THF 中的反应合成。在其晶体形式中，1(-)·[K(+)(thf)(2)]具有近乎正方形平面的四硅杂环丁二烯配体。
