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重铬酸铯

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重铬酸铯
英文名 cesium dichromate
识别
CAS号 13530-67-1  ✓
PubChem 3084158
SMILES
性质
化学式 Cs2Cr2O7
熔点 384 °C(657 K)[1]
沸点 600 °C(873 K)(分解)[1]
溶解性 g/100 g水
0.09(0 °C), 3.6(25 °C),
8.03(40 °C), 22.6(60 °C)[1]
若非注明,所有数据均出自一般条件(25 ℃,100 kPa)下。

重铬酸铯是一种无机化合物,化学式为Cs2Cr2O7

制备

重铬酸铯可由重铬酸钠氯化铯硫酸铯在70~80 °C混合,冷却后过滤沉淀,洗涤、重结晶得到。[2]它也可由碳酸铯三氧化铬反应制得:[3]

Cs2CO3 + 2 CrO3 → Cs2Cr2O7 + CO2

性质

重铬酸铯可以和叠氮化钡反应,得到叠氮化铯[4]它和三氟化溴反应,可以得到CsCrOF4[5]它和五氧化二钒在430-550 °C反应,可以得到CsCrV2O7[6]

2 Cs2Cr2O7 + 4 V2O5 → 4 CsCrV2O7 + 3 O2

它和草酸草酸铯在溶液中混合,缓慢挥发溶剂可以结晶出暗蓝色的Cs3[Cr(C2O4)3]·2H2O。[7]

参考文献

  1. ^ 1.0 1.1 1.2 Properties of substance: cesium dichromate. chemister.ru. [2020-12-11]. 
  2. ^ Shakhno, I. V.; Plyushchev, V. E. Synthesis of rubidium and cesium dichromate. Khimicheskaya Nauka i Promyshlennost, 1959. 4: 685-686. ISSN: 0368-5586.
  3. ^ Vinarov, I. V.; Fraiman, I. B.; Kolach, S. A. Complex preparation of reactive pure cesium salts from cesium chloride. Khimicheskaya Tekhnologiya (Kharkov), 1966. 6. 98-102. ISSN: 0368-699X.
  4. ^ Csaszar, Lili M.; Rozsa, Karoly. Convenient method for producing small quantities of Cs metal. KFKI (Kozp. Fiz. Kut. Int.) Koezlemeny, 1964. 12 (2): 175-179. CAN61: 82196.
  5. ^ Eric G. Hope, Peter J. Jones, William Levason, J. Steven Ogden, Mahmoud Tajik, Jeremy W. Turff. Synthesis and properties of chromium(V) trifluoride oxide CrOF3 and related oxo-anions. Journal of the Chemical Society, Dalton Transactions. 1984, (11): 2445 [2020-12-11]. ISSN 0300-9246. doi:10.1039/dt9840002445 (英语). 
  6. ^ Yonggang Wang, Jie Liang, Ting Wen, Kuo Li, Yingxia Wang, Guobao Li, Fuhui Liao, Jianhua Lin. Syntheses and properties of a series of chromium vanadates ACrV2O7 (A=Na, K, Rb, Cs) with layered structure. Journal of Solid State Chemistry. 2012-08, 192: 1–6 [2020-12-11]. doi:10.1016/j.jssc.2012.03.025 (英语). 
  7. ^ Lee Martin, Anthony Christian, Hiroki Akutsu. Tricaesium tris(oxalato-κ 2 O 1 , O 2 )chromate(III) dihydrate. Acta Crystallographica Section C Crystal Structure Communications. 2010-06-15, 66 (6): m157–m159 [2020-12-11]. ISSN 0108-2701. doi:10.1107/S0108270110014861. 
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重铬酸铯
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