二氯化一氯五氨合钴(III)
二氯化一氯五氨合钴(III) | |||
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IUPAC名 Pentaamminechlorocobalt(III) chloride | |||
别名 | Pentaamminechlorocobalt(III) chloride | ||
识别 | |||
CAS号 | 13859-51-3 | ||
PubChem | 15771825 | ||
ChemSpider | 140421 | ||
SMILES |
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EINECS | 237-594-8 | ||
性质 | |||
化学式 | [Co(NH3)5Cl]Cl2 | ||
摩尔质量 | 250.4 g/mol g·mol⁻¹ | ||
外观 | red-violet rhomb-shaped crystal | ||
密度 | 1.783 g/mL | ||
沸点 | N/A | ||
溶解性(水) | 0.4 g/100 mL | ||
蒸氣壓 | 5990 mm Hg | ||
热力学 | |||
ΔfHm⦵298K | −1.0376E+06 Jmol−1; Molar Gibbs energy of formation = −606480 J/mol | ||
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。 |
二氯化一氯五氨合钴(III)是一种配位化合物,由[Co(NH3)5Cl]2+和两个Cl−构成。它是红紫色、反磁性的水溶性固体。该化合物有着历史与学术意义。
制备
- 2 CoCl2·6H2O + 10 NH3 + 2 HCl + H2O2 → 2 [Co(NH3)5(OH2)]Cl3 + 12 H2O
反应得到的中间体可以通过加热使外界的氯离子进入到配离子的内界:
- [Co(NH3)5(OH2)]Cl3 → [Co(NH3)5Cl]Cl2 + H2O
参见
参考文献
- ^ Gert G. Schlessinger. Chloropentaamminecobalt(III) Chloride. Inorganic Syntheses. 1967, 9: 160. doi:10.1002/9780470132401.ch43.
- ^ Williams, Gregory M; Olmsted, John, III; Preksa, Andrew P., III. Coordination complexes of cobalt: inorganic synthesis in the general chemistry laboratory. Journal of Chemical Education. 1989, 66: 1043–5. doi:10.1021/ed066p1043.
- ^ G. G. Messmer; E. L. Amma. Redetermination of the crystal structure of chloropentaamminecobalt(III) dichloride. Acta Crystallogr. B. 1968, 24: 417–422. doi:10.1107/S0567740868002475.
- ^ Hambley, Trevor W.; Lay, Peter A. Comparisons of π-bonding and hydrogen bonding in isomorphous compounds: [M(NH3)5Cl]Cl2 (M = Cr, Co, Rh, Ir, Ru, Os). Inorganic Chemistry. 1986, 25: 4553–8. doi:10.1021/ic00245a020.