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|Section2= |Section3= |Section7= |Section8= }} Gold(I) sulfide is the inorganic compound with the formula Au2S. It is one of two principal sulfides of gold, the other being gold(III) sulfide, Au2S3. Gold sulfides exist in nature as solid solutions with silver, which has the same covalent radius. ==Structure and preparation== The compound crystallizes in the motif seen for cuprous oxide: gold is 2-coordinate, sulfur 4-coordinate, and the S-Au-S linkage is linear.〔Wells, A.F. (1984) Structural Inorganic Chemistry, Oxford: Clarendon Press. ISBN 0-19-855370-6.〕 Linear coordination geometry is typically adopted by gold(I) compounds, such as the coordination complex chloro(dimethyl sulfide)gold(I). It can be prepared by treating gold chloride with hydrogen sulfide〔N. N. Greenwood, A. Earnshaw, ''Chemistry of the Elements'', 2nd ed., Butterworth-Heinemann, Oxford, UK, 1997.〕 It also arises by treating dicyanoaurate: :H2S + 2 KAu(CN)2 → Au2S + 2 KCN + 2 HCN This product is described as "initially dark reddish-brown" solid that turns "steel-gray". 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「Gold(I) sulfide」の詳細全文を読む スポンサード リンク
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