Chemical elements
  Silicon
    Isotopes
    Energy
    Physical Properties
    Chemical Properties
      Silicon Tetrahydride
      Silicomethane
      Silicane
      Silico-ethane
      Silico-acetylene
      Bromosilicane
      Silicofluoroform
      Trifluorosilicane
      Silicochloroform
      Trichlorosilicane
      Silicobromoform
      Tribromosilicane
      Silico-iodoform
      Tri-iodosilicane
      Silicon Tetrafluoride
      Hydrofluosilicic Acid
      Silicon Subfluoride
      Silicon Tetrachloride
      Tetrachlorosilicane
      Silicon Tetrabromide
      Tetrabromosilicane
      Silicon Tetra-iodide
      Tetra-iodosilicane
      Mixed Halides of Silicon
      Halogen Derivatives of Silico-ethane
      Halogen Derivatives of Silicopropane
      Halogen Derivatives of Silicobutane
      Halogen Derivatives of Silicopentane and Silicohexane
      Silicon Oxychlorides
      Silica
      Silicon Dioxide
      Silicates
      Silicoformic Anhydride
      Silico-oxalic Acid
      Silicomes-oxalic Acid
      Silicon Disulphide
      Silicon Monosulphide
      Silicon Oxysulphide
      Silicon Thiochloride
      Silicon Thiobromide
      Silicon Chloroitydrosulphide
      Silicothio-urea
      Silicon Selenide
      Silicon Tetramide
      Silicon Di-imide
      Silicon Nitrimide
      Silicam
      Siliconitrogen Hydride
      Silicon Nitrides
      Crystalline Silicon Monocarbide
      Carborundum
      Silicon Dicarbide
      Silicon Carboxide
      Borides of Silicon
    PDB 1fuq-4ehr

Siliconitrogen Hydride, SiNH






Siliconitrogen Hydride, SiNH, which is the silicon analogue of hydrocyanic acid, is formed by the action of ammonia on silicochloroform vapour:

SiHCl3 + 4NH3 = SiNH + 3NH4Cl.

The gases are diluted with hydrogen and cooled to prevent a too vigorous reaction, and moisture and air are rigorously excluded to prevent hydrolysis or oxidation of the product. Ammonium chloride is removed from the mixture by means of liquid ammonia, but the hydride has not been obtained pure.

Siliconitrogen hydride is a white powder which sublimes with decomposition at 300° C. under reduced pressure. It reacts with water and alkalis, producing silicic acid or a silicate, ammonia and hydrogen:

SiNH + 3H2O = H2SiO3 + NH3 + H2;

it is consequently a strong reducing agent, and in this respect resembles silicoformic anhydride. Dry hydrogen chloride gas regenerates silico-chloroform, thus:

SiNH + 4HCl = SiHCl3 + NH4Cl.

Evidently siliconitrogen hydride does not resemble hydrogen cyanide.


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