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|Section2= |Section3= }} Sodium tetrasulfide is an inorganic compound with the formula Na2S4. It is a yellow-orange solid that dissolved with hydrolysis in water.〔Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. Vol. 1. p. 365.〕 They are precursors to some specialty polymers and intermediates in prototypes of the sodium-sulfur battery. ==Synthesis and structure== It is produced through the reaction between elemental sulfur and sodium hydrosulfide in alcoholic solution: :2NaSH + 4 S → Na2S4 + H2S The polysulfide anions adopt zig-zag chains of sulfur atoms. The S-S distances are about 2.05 Å and the S-S-S-S dihedral angles are around 90°.〔R. Tegman "The crystal structure of sodium tetrasulphide, Na2S4" Acta Cryst. (1973). B29, 1463-1469 〕 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「sodium tetrasulfide」の詳細全文を読む スポンサード リンク
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