Cadmium tellurite

Cadmium tellurite is the tellurite salt of cadmium, with the chemical formula CdTeO3.

Cadmium tellurite
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.036.316
EC Number
  • 239-963-9
  • InChI=1S/Cd.H2O3Te/c;1-4(2)3/h;(H2,1,2,3)/q+2;/p-2
    Key: GKMPTXZNGKKTDU-UHFFFAOYSA-L
  • [Cd+2].[O-] [Te](=O)[O-]
Properties
CdO3Te
Molar mass 288.01 g·mol−1
Appearance colourless solid[1]
Melting point 695 °C[1]
Boiling point 1050 °C (decomposes)[1]
insoluble[2]
Hazards
GHS labelling:[3]
GHS07: Exclamation mark
Warning
H302, H312, H332
P261, P264, P270, P271, P280, P301+P317, P302+P352, P304+P340, P317, P321, P330, P362+P364, P501
Related compounds
Other anions
 Cadmium telluride
Cadmium tellurate
Cadmium sulfite
Cadmium selenite
Other cations
 Calcium tellurite
Strontium tellurite
Barium tellurite
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Preparation

Cadmium tellurite can be prepared by the reaction of cadmium sulfate and sodium tellurite in ammonia.

Properties

Cadmium tellurite is a colourless solid[1] that is insoluble in water.[2] It is a semiconductor. It is part of the monoclinic crystal system, with space group P21/c (No. 14). It can also crystallize in the cubic crystal system and hexagonal crystal system at temperatures above 540 °C.[4][5]

References
  1. William M. Haynes (2016). CRC Handbook of Chemistry and Physics. CRC Press. p. 53. ISBN 978-1-4987-5429-3.
  2. Cadmium tellurite, 99% at AlfaAesar, accessed on {{{Datum}}} (PDF) (JavaScript required).
  3. "Cadmium tellurite". pubchem.ncbi.nlm.nih.gov.
  4. Krämer, V.; Brandt, G. (1985-08-15). "Structure of cadmium tellurate(IV), CdTeO3". Acta Crystallographica Section C Crystal Structure Communications. 41 (8): 1152–1154. doi:10.1107/S0108270185006941.
  5. Poupon, Morgane; Barrier, Nicolas; Petit, Sébastien; Boudin, Sophie (2017). "A new β-CdTeO 3 polymorph with a structure related to α-CdTeO 3". Dalton Transactions. 46 (6): 1927–1935. doi:10.1039/C6DT04449B. ISSN 1477-9226. PMID 28112302.


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