- Thermolysis of a siladigermirane: Evidence for the formation of a germasilene
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Thermolysis of hexamesitylsiladigermirane in the presence of methanol gives two products: dimesityl(dimesitylmethoxysilyl)germane (4) and dimesitylmethoxygermane (5).
- Baines, Kim M.,Cooke, Jeffrey A.
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- Addition of Isocyanides to Tetramesityldigermene: A Comparison of the Reactivity between Surface and Molecular Digermenes
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The reaction of benzyl isocyanide, tert-butyl isocyanide, and 2,6-dimethylphenyl isocyanide with tetramesityldigermene (Mes2Ge=GeMes2) was examined. Whereas the addition of benzyl isocyanide gave the C?NC activation product, Mes2Ge(CH2Ph)Ge(CN)Mes2, tert-butyl isocyanide, and 2,6-dimethylphenyl isocyanide did not give stable adducts, rather the rate of conversion of the digermene to the corresponding cyclotrigermane was accelerated. A comparison between the reactivity of the isocyanides with Mes2Ge=GeMes2and the Ge(100)-2×1 surface was made and some insights into the surface chemistry are offered.
- Tashkandi, Nada Y.,Cook, Emily E.,Bourque, Jeremy L.,Baines, Kim M.
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- Synthesis and chemistry of thiagermiranes
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Dimethylgermylene (1) reacts with thioketones 3 and 9 to give 1,3,2,4-dithiadigermolanes 4 and 10, the ultimate products of formation of thiagermiranes 6 and 11 and subsequent addition of dimethylgermanethione (7). Dimesitylgermylene (16) reacts with adamantanethione (3) to give 3-(2-adamantyl)-2,2-dimesityl-1,2-thiagermirane (18). Photolysis of thiagermirane 18 yields dimesitylgermylene (16) and adamantanethione (3) derived from germathiocarbonyl ylide 22. Oxidation of thiagermirane 18 by mCPBA gives 3-(2-adamantyl)-4,4-dimesityl-1,2,4-oxathiagermetane S-oxide (27). X-ray analyses were done for thiagermirane 18 and 1,2,4-oxathiagermetane S-oxide 27.
- Tsumuraya, Takeshi,Sato, Sadao,Ando, Wataru
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p. 161 - 167
(2008/10/08)
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- Reductive Coupling Reactions of Dihalogenogermanes with Magnesium and Magnesium Bromide: Simple Preparation of Cyclotrigermanes and Cyclotetragermanes
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The reactions of various dihalogenogermanes with Mg and MgBr2 in tetrahydrofuran produce the corresponding cyclotrigermanes and cyclotetragermanes; the ring size of the products depends on the steric bulk of substituents on germanium.
- Ando, Wataru,Tsumuraya, Takeshi
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p. 1514 - 1515
(2007/10/02)
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