期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 143, 期 5, 页码 2212-2216出版社
AMER CHEMICAL SOC
DOI: 10.1021/jacs.0c12908
关键词
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资金
- National Nature Science Foundation of China [21673191, 21972112]
- Guangdong Laboratory of chemistry and fine chemicals [1922016]
- Guangxi University of Science and Technology [03190227, 03190228]
- Guangxi Department of Science and Technology [AD19245107]
- Deutsche Forschungsgemeinschaft [RO 224/70-1]
In this study, compound 2 undergoes charge transfer reactions with various reagents, leading to the formation of stable radical cation and dication species of the 1,4-disilabenzene. Additionally, compound 2 also undergoes oxidative addition reactions with group 16 elements such as O, S, and Se.
The reaction of (LSi:)(2) (1; L = PhC(NtBu)(2)) with 2 equiv of Me3SiC2C2SiMe3 resulted in the formation of (Me3SiC2)(2)(Me3SO2C4Si2(L)(2) (2). 2 exhibited a one-electron transfer when treated with 1 equiv of [Ph3C](+)[B(C6F5)(4)](-) to yield [(Me3SiC2)(2)(Me3Si)(2)C4Si2(L)(2)](center dot+)[B(C6F5)(4)](-) (3) and Ph3CCPh3, respectively. When compound 2 was treated with 2 equiv of AgOSO2CF3 a transfer of two electrons occurred to produce [(Me3SiC2)(2)(Me3SO2C4Si2(L)(2)](2+)center dot 2[OSO2CF3](-) (4) and elemental silver. The 1,4-disilabenzene 2 is disclosed of an open-shell singlet diradical character, and 3 and 4 are, respectively, the elusive stable radical cation and dication species of the 1,4-disilabenzene (2). Furthermore, 2 reacted with group 16 elements of O, S, and Se by oxidative addition to form (Me3SiC2)(2)(Me3Si)(2)C4Si2(L)(2)(mu-O-2) (5) and (Me3SiC2)(2)(Me3Si)(2)C4Si2(L)(2)(mu-E) (E = S (6) and Se (7)), respectively.
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