Chemical elements
    Physical Properties
    Chemical Properties
      Cadmium Fluoride
      Cadmium Chloride
      Cadmium Bromide
      Cadmium Iodide
      Cadmium Chlorate
      Cadmium Perchlorate
      Cadmium Bromate
      Cadmium Iodate
      Cadmium Periodate
      Cadmium Suboxide
      Cadmium Oxide
      Cadmium Hydroxide
      Cadmic Hydroxide
      Cadmium Peroxide
      Cadmium Sulphide
      Cadmium Sulphite
      Cadmium Sulphate
      Cadmium Thiosulphate
      Cadmium Dithionate
      Cadmium Selenide
      Cadmium Selenites
      Cadmium Selenate
      Cadmium Telluride
      Cadmium Tellurite
      Cadmium Tellurate
      Cadmium Chromite
      Cadmium Chromate
      Cadmium Dichromate
      Cadmium Molybdate
      Cadmium Tungstate
      Cadmium Nitride
      Cadmium Azide
      Cadmium Amide
      Cadmium Nitrite
      Cadmium Nitrate
      Cadmium Phosphide
      Cadmium Hypophosphite
      Cadmium Orthophosphate
      Cadmium Pyrophosphate
      Cadmium Thiophosphates
      Cadmium Arsenide
      Cadmium Arsenite
      Cadmium Arsenates
      Cadmium Metantimonate
      Cadmium Carbonate
      Cadmium Thiocarbonate
      Cadmium Cyanide
      Cadmium Silicate
      Cadmium Borates
    PDB 1a4k-1exq
    PDB 1f48-1ihu
    PDB 1ii0-1mhu
    PDB 1mms-1qvg
    PDB 1qy0-1wb6
    PDB 1wje-2avp
    PDB 2b3p-2j6e
    PDB 2jdz-2x05
    PDB 2x09-3ccj
    PDB 3ccl-3ggf
    PDB 3h1u-3p5v
    PDB 3p5w-8ice

Cadmium Nitrite, Cd(NO2)2

Pale yellow crystals of anhydrous nitrite, Cd(NO2)2, are obtained by triturating cadmium chloride and silver nitrite together, adding water, filtering, and evaporating in vacuo over sulphuric acid. Its decomposition by heat seems to be represented by the two equations

3Cd(NO2)2 = 2CdO+Cd(NO3)2+4NO;
Cd(NO2)2 = CdO+NO+NO2.

Cadmium nitrate is ionised very distinctly in aqueous solution and tends to form basic salts.

A solution of cadmium nitrite is obtained by interaction between equivalent quantities of barium nitrite and cadmium sulphate in solution. A hygroscopic crystalline mass of the monohydrate, Cd(NO2)2.H2O, has been obtained from such a solution, but, even by careful evaporation, a basic salt is often obtained, and it is difficult to obtain a salt in which the ratio NO2:Cd is as high as 2:1.

The colourless double salt, KNO2.Cd(NO2)2, and the yellow salts, 2KNO2.Cd(NO2)2 and 4KNO2.Cd(NO2)2, have been prepared crystalline by treating a solution of cadmium acetate with potassium nitrite. The salt 2NH4.NO2.Cd(NO2)2.H2O.CdO.2NH4 has been obtained in transparent rhomboidal prisms by treating a saturated solution of ammonium nitrate with granulated cadmium, and the complex nitrites, 4KNO2.2Cd(NO2)2.Ni(NO2)2, 4ThNO2.2Cd(NO2)2.Ni(NO2)2, and 2NH4NO2.Cd(NO2)2.Ni(NO2)2, have also been prepared.

Cadmium nitrite also forms the compound Cd(NO2)2.2H2O.C6H12N4 with hexamethylenetetramine.

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