Copper(II) selenite

Copper(II) selenite
Names
IUPAC name
Copper(II) selenite
Other names
Copper selenite dihydrate
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.030.465
EC Number
  • 233-526-6
PubChem CID
UNII
CompTox Dashboard (EPA)
InChI
  • InChI=1S/Cu.H2O3Se/c;1-4(2)3/h;(H2,1,2,3)/q+2;/p-2
    Key: JNRBLFVQPTZFAG-UHFFFAOYSA-L
SMILES
  • [O-][Se](=O)[O-].[Cu+2]
Properties
Appearance Blue[1]
Solubility in water
 Insoluble[1]
Solubility Slightly soluble in benzene and acids[1]
Structure[2]
Crystal structure
 orthorhombic
Space group
 Pcab (No. 61)
Lattice constant
a = 5.954 Å, b = 7.006 Å, c = 12.232 Å
Lattice volume (V)
 510.2 Å3
Formula units (Z)
 8 units per cell
Hazards
GHS labelling:
Pictograms
 GHS06: ToxicGHS08: Health hazardGHS09: Environmental hazard
Signal word
 Danger
Hazard statements
 H301, H331, H371, H410
Precautionary statements
 P260, P264, P270, P271, P273, P301+P310, P304+P340, P311, P314, P321, P330, P391, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Copper(II) selenite is an inorganic compound with the chemical formula CuSeO3. It forms orthorhombic crystals. A blue dihydrate exists.[3][4]

Preparation

Copper(II) selenite can be prepared from copper(II) acetate and selenous acid.[3][5]

Uses

Copper(II) selenite can be used a catalyst for Kjeldahl digestion.[3]

A copper selenite chloride with the formula Cu5(SeO3)4Cl2 has been characterized by single-crystal X-ray diffraction.[6]

See also

References

  1. ^ a b c "Copper(II) selenite". Sigma-Aldrich.
  2. ^ Hawthorne, F. C.; Ercit, T. S.; Groat, L. A. (1986-10-15). "Structures of zinc selenite and copper selenite". Acta Crystallographica Section C: Crystal Structure Communications. 42 (10): 1285–1287. doi:10.1107/S0108270186092545. ISSN 0108-2701.
  3. ^ a b c "Copper Selenite as a catalyst in the Kjeldahl nitrogen determination". Department of Chemistry, University of Wisconsin, Madison. November 1935.
  4. ^ "Sigma Aldrich - Copper(II) selenite dihydrate".
  5. ^ Hurd, Loren C.; Kemmerer, George I.; Meloche, V. W. (2002-05-01). "The Ammonates of Copper Selenite1". Journal of the American Chemical Society. 52 (10): 3881–3886. doi:10.1021/ja01373a018.
  6. ^ Zhang, Dong; Berger, Helmuth; Kremer, Reinhard K.; Wulferding, Dirk; Lemmens, Peter; Johnsson, Mats (2010-10-18). "Synthesis, Crystal Structure, and Magnetic Properties of the Copper Selenite Chloride Cu5 (SeO3 )4 Cl2". Inorganic Chemistry. 49 (20): 9683–9688. doi:10.1021/ic101431g. ISSN 1520-510X 0020-1669, 1520-510X. Retrieved 2026-02-23. {{cite journal}}: Check |issn= value (help)
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