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|Section2= |Section5= |Section7= }}Carbon diselenide is an inorganic compound with the chemical formula CSe2. It is a yellow-orange oily liquid with pungent odor. It is an analogue of carbon disulfide (CS2). This light-sensitive compound is insoluble in water and soluble in organic solvents. ==Synthesis, structure and reactions== Carbon diselenide is a linear molecule with D∞h symmetry. It is produced by reacting selenium powder with dichloromethane vapor near 550 °C. :2 Se + CH2Cl2 → CSe2 + 2 HCl It was first reported by Grimm and Metzger, who prepared it by treating hydrogen selenide with carbon tetrachloride in a hot tube. Like carbon disulfide, carbon diselenide polymerizes under high pressure. The structure of the polymer is thought to be a head-to-head structure with a backbone in the form of –()–. The polymer is a semiconductor with a room-temperature conductivity of 50 S/cm. In addition, carbon diselenide is a precursor to tetraselenafulvalenes, the selenium analogue of tetrathiafulvalene, which can be further used to synthesize organic conductors and organic superconductors. Carbon diselenide reacts with secondary amines to give dialkydiselenocarbamates:〔 :2 Et2NH + CSe2 → (Et2NH2+)(Et2NCSe2−) 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「Carbon diselenide」の詳細全文を読む スポンサード リンク
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