Copper selenite

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Crystal structure
No drawing available
General
Surname Copper selenite
other names

Copper (II) selenite

Ratio formula CuSeO 3
Brief description

blue solid

External identifiers / databases
CAS number
  • 10214-40-1 (anhydrate)
  • 15168-20-4 (dihydrate)
EC number 233-526-6
ECHA InfoCard 100.030.465
PubChem 24884280
Wikidata Q65680090
properties
Molar mass 226.53 g mol −1
Physical state

firmly

density

3.31 g cm −3

solubility
  • practically insoluble in water
  • soluble in acids and ammonium hydroxide
safety instructions
GHS labeling of hazardous substances
06 - Toxic or very toxic 08 - Dangerous to health 09 - Dangerous for the environment

danger

H and P phrases H: 301-331-373-410
P: 260-304 + 340 + 312-403 + 233
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Kupferselenit is an inorganic chemical compound of copper from the group of selenite .

Occurrence

Copper selenite occurs naturally in the form of the mineral chalcomenite .

Extraction and presentation

Copper selenite can be obtained by reacting copper nitrate with sodium selenite solutions.

properties

Copper selenite dihydrate is a blue solid that is practically insoluble in water. The compound releases its water of crystallization at temperatures above 265 ° C and decomposes above 460 ° C. It has a monoclinic crystal structure with the space group P 2 1 / n (space group no. 14, position 2) or an orthorhombic crystal structure with the space group Pcab (space group no. 61, position 2) . The anhydrate is ferromagnetic. Template: room group / 14.2 Template: room group / 61.2

Individual evidence

  1. ↑ a b c Dale L. Perry: Handbook of Inorganic Compounds . CRC Press, 2016, ISBN 978-1-4398-1462-8 , pp. 151 ( limited preview in Google Book search).
  2. ↑ a b c d e f data sheet Copper (II) selenite dihydrate, from Sigma-Aldrich , accessed on April 25, 2019 ( PDF ).
  3. ↑ Marina V. Charykova, Maxim I. Lelet et al. a .: A calorimetric and thermodynamic investigation of the synthetic analogue of chalcomenite, CuSeO3-2H2O. In: European Journal of Mineralogy. 29, 2017, p. 269, doi : 10.1127 / ejm / 2017 / 0029-2595 .
  4. ^ Chemical Thermodynamics of Selenium . Elsevier, 2005, ISBN 978-0-08-045751-2 , pp. 294 ( limited preview in Google Book search).
  5. ↑ External identifiers of or database links to copper selenite dihydrate : CAS number: 15168-20-4, EC number: 683-639-3, ECHA InfoCard: 100.209.144 , PubChem : 160923 , ChemSpider : 21241696 , Wikidata : Q15627472 .
  6. ↑ S. Lee, W.-J. Lee et al. a .: Anomalous spin dynamics in the coupled spin tetramer system. In: Physical Review B. 95, 2017, doi : 10.1103 / PhysRevB.95.054405 .
  7. ↑ Hawthorne FC, TS Ercit, LA Groat: Structures of zinc selenite and copper selenite. In: Acta Crystallographica Section C Crystal Structure Communications. 42, p. 1285, doi : 10.1107 / S0108270186092545 .
  8. ↑ Kay Kohn, Katsuhiko Inoue et al. a .: Crystal chemistry of MSeO3 and MTeO3 (M = Mg, Mn, Co, Ni, Cu, and Zn). In: Journal of Solid State Chemistry. 18, 1976, p. 27, doi : 10.1016 / 0022-4596 (76) 90075-X .