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|Section3= |Section7= |Section8= }} Disulfur monoxide or sulfur suboxide is an inorganic compound with formula S2O. It is one of the lower sulfur oxides. It is a colourless gas and condenses to give a pale coloured solid that is unstable at room temperature.〔R. Steudel: Sulfur-Rich Oxides SnO and SnO2" in Elemental Sulfur und Sulfur-Rich Compounds II, Steudel, R., 2003, Springer, Berlin-Heidelberg. ISBN 9783540449515〕 It is a bent molecule with an S-S-O angle of 117.88°, S-S bond length of 188.4pm, and S-O bond length of 146.5pm. Disulfur monoxide was discovered by Peter W. Schenk in 1933.〔 However only when Myers and Meschi studied it, did the actual composition and shape of the molecule become known.〔 ==Preparation== It can be formed by many methods, including combustion of sulfur vapour in a deficiency of oxygen. It arises by oxidizing sulfur with copper oxide: :3/4 S8 + 3 CuO → 3 CuS + S2O + SO2 Other routes include the reaction of thionyl chloride with silver sulfide: :SOCl2 + Ag2S → 2 AgCl + S2O It also arises via thermal decomposition of sulfur dioxide in a glow discharge.〔 Disulfur monoxide forms a yellow solution in carbon tetrachloride.〔 The solid can be obtained at liquid nitrogen temperatures, often appearing dark colored owing to impurities. On decomposition at room temperature it forms SO2 via the formation of polysulfur oxides. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Disulfur monoxide」の詳細全文を読む スポンサード リンク
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