Chemical elements
  Nickel
    History
    Occurrence
    Isotopes
    Energy
    Production
    Preparation
    Application
    Catalyst
    Physical Properties
    Compounds
      Nickel Fluoride
      Nickel Dichloride
      Double Nickel Chlorides
      Nickel Dibromide
      Nickel Di-iodide
      Nickel Chlorate
      Nickel Perchlorate
      Nickel Bromate
      Nickel Iodate
      Tri-nickel Suboxide
      Nickel Suboxide
      Nickel Monoxide
      Nickel Dihydroxide
      Nickelo-nickelic Oxide
      Nickel Dioxide
      Nickel Subsulphide
      Nickel Monosulphide
      Nickel Sesquisulphide
      Tri-nickel Tetrasulphide
      Nickel Disulphide
      Nickel Tetrasulphide
      Nickel Sulphite
      Nickel Thiosulphate
      Nickel Dithionate
      Nickel Sulphate
      Nickel Subselenide
      Nickel Selenide
      Nickel Sesquiselenide
      Nickel Selenite
      Nickel Sesquitelluride
      Nickel Tellurite
      Nickel Chromate
      Nickel Dichromate
      Double Nickel Chromates
      Nickel Molybdate
      Nickel Nitride
      Nickel Azoimide
      Nickelamide
      Nitro-nickel
      Nickel Nitrite
      Nickel Nitrate
      Di-nickel Phosphide
      Nickel Sesquiphosphide
      Nickel Diphosphide
      Nickel Triphosphide
      Nickel Hypophosphite
      Nickel Phosphite
      Nickel Metaphosphate
      Nickel Orthophosphate
      Nickel Pyrophosphate
      Nickel Thio-orthophosphate
      Nickel Thiopyrophosphite
      Nickel Thiopyrophosphate
      Tri-nickel Diarsenide
      Nickel Arsenide
      Nickel Diarsenide
      Nickel Arsenite
      Nickel Orthoarsenate
      Nickel Antimonide
      Nickel Antimonate
      Nickel Thioantimonite
      Nickel Vanadate
      Nickel Carbide
      Nickel Tetracarbonyl
      Nickel Carbonate
      Nickel Monocyanide
      Nickel Cyanide
      Nickel Thiocyanate
      Nickel Thiocarbonate Hexammoniate
      Nickel Subsilicide
      Nickel Orthosilicate
      Nickel Monoboride
      Nickel Borates
    PDB 1a5n-1g2a
    PDB 1g3v-1mn0
    PDB 1mro-1s9b
    PDB 1scr-1xmk
    PDB 1xu1-2cg5
    PDB 2cqz-2jih
    PDB 2jk8-2v4b
    PDB 2vbq-3c2q
    PDB 3c6c-3h85
    PDB 3hdp-3kvb
    PDB 3l1m-3o00
    PDB 3o01-4ubp
    PDB 8icl-9ant

Nickel Tetracarbonyl, Ni(CO)4






Nickel Tetracarbonyl, Ni(CO)4, is obtained when carbon monoxide is passed over metallic nickel in a finely divided condition, such as is obtained by the reduction of nickel oxide in hydrogen at 400° C., the best temperature for obtaining the carbonyl being about 30-50° C. The carbonyl is condensed in a cooled vessel. The reaction may be advantageously carried out under a pressure of 2-100 atmospheres of carbon monoxide, in which case the temperature may be raised even to 250° C. without fear of decomposition.

Nickel carbonyl is a colourless liquid, boiling at 43.2° C. and solidifying at -25° C. Its density is 1.3185 at 17° C. At 50° C. its vapour density corresponds to the formula Ni(CO)4 when determined in Victor Meyer's apparatus. In an atmosphere of carbon monoxide its density is normal up to 100° C., whilst in nitrogen its dissociation is practically complete at 155° C.

Nickel carbonyl reacts slowly with concentrated sulphuric acid, yielding carbon monoxide, hydrogen, and nickel sulphate.

Ni(CO)4 + H2SO4 = NiSO4 + H2 + 4CO.

Solutions of nickel carbonyl in carbon tetrachloride react with chlorine, bromine, or iodine in similar solution, yielding carbon monoxide and the anhydrous halide. Thus:

Ni(CO)4 + Cl2 = NiCl2 + 4CO.

Moist air decomposes the carbonyl as does also carbon disulphide.

When inhaled even in small quantities the vapour of nickel carbonyl is very poisonous, being decomposed in the lungs to carbon monoxide and a nickel derivative - possibly the basic carbonate.


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