Chen Yilin, Li Jiancheng, Zhao Yiling, Zhang Li, Tan Gengwen, Zhu Hongping, Roesky Herbert W
State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
Center of Materials Science and Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China.
J Am Chem Soc. 2021 Feb 10;143(5):2212-2216. doi: 10.1021/jacs.0c12908. Epub 2021 Jan 28.
The reaction of (LSi:) (; L = PhC(NBu)) with 2 equiv of MeSiCCSiMe resulted in the formation of (MeSiC)(MeSi)CSi(L) (). exhibited a one-electron transfer when treated with 1 equiv of [PhC][B(CF)] to yield [(MeSiC)(MeSi)CSi(L)][B(CF)] () and PhCCPh, respectively. When compound was treated with 2 equiv of AgOSOCF a transfer of two electrons occurred to produce [(MeSiC)(MeSi)CSi(L)]·2[OSOCF] () and elemental silver. The 1,4-disilabenzene is disclosed of an open-shell singlet diradical character, and and are, respectively, the elusive stable radical cation and dication species of the 1,4-disilabenzene (). Furthermore, reacted with group 16 elements of O, S, and Se by oxidative addition to form (MeSiC)(MeSi)CSi(L)(μ-O) () and (MeSiC)(MeSi)CSi(L)(μ-E) (E = S () and Se ()), respectively.
(LSi:)(L = PhC(NBu))与2当量的MeSiCCSiMe反应生成了(MeSiC)(MeSi)CSi(L)()。用1当量的[PhC][B(CF)]处理时表现出单电子转移，分别生成[(MeSiC)(MeSi)CSi(L)]B(CF)和PhCCPh。当化合物用2当量的AgOSOCF处理时发生双电子转移，生成[(MeSiC)(MeSi)CSi(L)]·2OSOCF和单质银。1,4 - 二硅苯具有开壳单重态双自由基特征，而和分别是难以捉摸的1,4 - 二硅苯的稳定自由基阳离子和双阳离子物种()。此外，与第16族元素O、S和Se通过氧化加成反应分别形成(MeSiC)(MeSi)CSi(L)(μ - O)()和(MeSiC)(MeSi)CSi(L)(μ - E)(E = S()和Se())。
