Cesium acetate

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Crystal structure
Unit cell of cesium acetate.
__ Cs      __ O      __ C
Crystal system

hexagonal

Space group

P 6 / m (No. 175)Template: room group / 175

Lattice parameters

a = 1488.0  pm , c = 397.65 pm

General
Surname Cesium acetate
other names

Cesium ethanoate (according to IUPAC )

Ratio formula C 2 H 3 CsO 2
Brief description

white, odorless, hygroscopic solid.

External identifiers / databases
CAS number 3396-11-0
EC number 222-248-0
ECHA InfoCard 100.020.226
PubChem 5152919
Wikidata Q416663
properties
Molar mass 191.96 g · mol -1
Physical state

firmly

Melting point

194 ° C

solubility

100 g / l at 11 ° C

safety instructions
GHS labeling of hazardous substances
no GHS pictograms
H and P phrases H: no H-phrases
P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Cesium acetate is the cesium salt of acetic acid with the constitutional formula CH 3 COOCs or in the inorganic salt notation Cs (CH 3 COO).

Extraction and presentation

Cesium acetate can be produced from cesium hydroxide and acetic acid by the salt formation reaction .

The synthesis from cesium carbonate and acetic acid with the evolution of carbon dioxide is also possible.

properties

Anhydrous cesium acetate crystallizes in the hexagonal crystal system in the space group P 6 / m (space group no. 175) with the lattice parameters a = 1488.0  pm and c = 397.65 pm. In the unit cell contains six formula units . Template: room group / 175

The thermal decomposition of cesium acetate is complete at 450 ° C. Cesium oxide is the end product .

use

Cesium acetate is used as a reagent in the Perkin reaction , where it can replace the otherwise common sodium acetate .

Individual evidence

  1. ↑ a b data sheet cesium acetate from Acros, accessed on May 20, 2010.
  2. ↑ Data sheet Cesium acetate (PDF) from Strem, accessed on December 25, 2012.
  3. ↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Inorganic Compounds, pp. 4-57.
  4. ↑ a b data sheet Cesium acetate from Sigma-Aldrich , accessed on May 25, 2011 ( PDF ).
  5. ↑ J. Hatibarua, GS Parry: A crystallographic study of the acetates of potassium, rubidium and cesium . In: Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry . 28, No. 10, October 15, 1972, pp. 3099-3100. doi : 10.1107 / S0567740872007496 . Retrieved July 1, 2012.
  6. ↑ A. Lossin, G. Meyer: "Crystal structure of cesium acetate, Cs (CH 3 COO)" in Journal for inorganic and general chemistry , 1993 , 619  (8), pp. 1462-1464; doi : 10.1002 / zaac.19936190823 .
  7. ↑ U. Meyer, H. Gorzawski, WF Hölderich: "Michael addition of ethyl acrylate and acetone over solid bases" in Catalysis Letters , 1999 , 59 , pp. 201-206; doi : 10.1023 / A: 1019020504961 .
  8. ↑ E. Koepp, F. Vögtle: “Perkin synthesis with cesium acetate” in Synthesis , 1987 , 1987  (2), pp. 177-179; doi : 10.1055 / s-1987-27880 .