Cerium(III) acetate

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Cerium(III) acetate
Names
IUPAC name
Cerium(III) acetate
Other names
Cerium triacetate
Cerium acetate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.007.869 Edit this at Wikidata
EC Number
  • anhydrous: 208-654-0
UNII
  • InChI=1S/3C2H4O2.Ce/c3*1-2(3)4;/h3*1H3,(H,3,4);/q;;;+3/p-3
    Key: VGBWDOLBWVJTRZ-UHFFFAOYSA-K
  • sesquihydrate: InChI=1S/6C2H4O2.2Ce.3H2O/c6*1-2(3)4;;;;;/h6*1H3,(H,3,4);;;3*1H2/q;;;;;;2*+3;;;/p-6
    Key: FLEYCIHWCBGBLG-UHFFFAOYSA-H
  • anhydrous: CC(=O)[O-].CC(=O)[O-].CC(=O)[O-].[Ce+3]
  • sesquihydrate: CC(=O)[O-].CC(=O)[O-].CC(=O)[O-].[Ce+3].CC(=O)[O-].CC(=O)[O-].CC(=O)[O-].[Ce+3].O.O.O
Properties
Ce(CH3COO)3
Molar mass 317.26
Appearance white powder
Melting point 308°C
Hazards
GHS labelling:[1]
GHS07: Exclamation markGHS09: Environmental hazard
Warning
H315, H319, H335, H410
P261, P264, P264+P265, P271, P273, P280, P302+P352, P304+P340, P305+P351+P338, P305+P354+P338, P317, P319, P321, P332+P317, P337+P317, P362+P364, P391, P403+P233, P405, P501
Related compounds
Other cations
 Lanthanum(III) acetate
Praseodymium(III) acetate
Neodymium acetate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Cerium acetate is an inorganic compound with the chemical formula of Ce(CH3COO)3. It is a white powder that is soluble in water. Its 1.5 hydrate loses water at 133°C to obtain an amorphous anhydrous form, and the amorphous phase changes to crystal at 212°C, and phase changes again at 286°C.[2]

Preparation

Cerium acetate can be prepared by reacting cerium(III) carbonate and 50% acetic acid in an aqueous solution:[3]

Ce2(CO3)3 + 6 CH3COOH → 2 Ce(CH3COO)3 + 3 H2O + 3 CO2↑

Properties

Cerium acetate is soluble in water and ethanol in its anhydrous form (its hydrate is insoluble in ethanol), easily soluble in pyridine, and insoluble in acetone.[4] Its thermal decomposition at 310 °C will generate basic cerium(III) acetate, which will be further decomposed to obtain Ce2O2CO3 (a basic carbonate), and continued heating generates CeO2 and CO.[2]

References

  1. ^ "Cerium triacetate". pubchem.ncbi.nlm.nih.gov.
  2. ^ a b Arii T, Kishi A, Ogawa M, et al. Thermal decomposition of cerium (III) acetate hydrate by a three-dimensional thermal analysis Archived 2018-10-24 at the Wayback Machine[J]. Analytical sciences, 2001, 17(7): 875-880.
  3. ^ 《无机化合物制备手册》.朱文祥 主编. 化学工业出版社.第十四章 碳族元素.P512.XIV-124 醋酸铈(III)
  4. ^ 《无机化合物合成手册》.第二卷.日本化学会 编. 曹惠民 译. 化学工业出版社. 1988.7第一版.【1260】稀土元素的乙酸盐.P582
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