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|Section2= |Section3= |Section8= }} Chromyl chloride is a chemical compound with the formula CrO2Cl2. This compound is an opaque dark blood-red liquid at room temperature and pressure. It is tetrahedral, somewhat like SO2Cl2. CrO2Cl2 is similar to the most commonly encountered chromium(VI) derivative chromate, ()2−; both are tetrahedral Cr(VI) compounds. However, they differ in both oxidizing power and in physical properties: one is a liquid and the other forms salts. CrO2Cl2 is a neutral molecular species. This means that in the liquid and solid forms, the individual CrO2Cl2 entities interact predominantly via van der Waals bonding. Such weak bonding leads to low melting and boiling points, which is related to the fact that it is a distillable liquid. The diminished oxidizing power of ()2− vs. CrO2Cl2 can be ascribed to its anionic nature, which diminishes its electron affinity. Also, chloride is a poorer pi-donor ligand than is oxide. ==Preparation== Chromyl chloride can be prepared by mixing potassium chromate or potassium dichromate with sodium chloride and treating this mix with concentrated sulfuric acid, followed by gentle distillation. K2Cr2O7 + 4NaCl + 6H2SO4 → 2CrO2Cl2 + 2KHSO4 + 4NaHSO4 +3H2O 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「Chromyl chloride」の詳細全文を読む スポンサード リンク
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