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}} Tin(II) hydroxide, Sn(OH)2, also known as ''stannous hydroxide'', is a chemical compound of tin in the +2 oxidation state. Pure Sn(OH)2 is prepared by reacting for example (CH3)3SnOH with SnCl2 in an aprotic solvent: :2 Me3SnOH + SnCl2 → Sn(OH)2 + 2 Me3SnCl There had been confusion as it had been believed that Sn(OH)2 was precipitated when a tin(II) salt is reacted with an alkali hydroxide such as NaOH, but this product was determined analytically to be hydrated tin(II) oxide, being either 5 SnO • 2 H2O or 3 SnO • H2O.〔Structure of Tin(II) "Hydroxide" and Lead(II) "Hydroxide", R. A. Howie & W. Moser, Nature 219, 372 - 373 (27 July 1968); 〕 The structure of pure Sn(OH)2 is not known.〔 Stannous hydroxide is easily oxidized to stannic acid (SnO2) by air since tin is often found in oxidation state +4. ==References== 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「Tin(II) hydroxide」の詳細全文を読む スポンサード リンク
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