The Nickel carbonyl reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Nickel carbonyl

Nickel carbonyl, or tetracarbonyl nickel is a covalent compound of nickel, which is, unusually for a metal compound, a colorless liquid at room temperature. Its formula is Ni(CO)₄. It is highly toxic and may be fatal if ingested or absorbed through the skin. Nickel carbonyl is extremely volatile. It vaporizes at room temperature. The vapors can autoignite.

Nickel metal at room temperature is able to react with carbon monoxide to form the tetracarbonyl. On moderate heating nickel tetracarbonyl decomposes to carbon monoxide and nickel metal. These two reactions form the basis for the Mond process for making pure nickel.

Nickel carbonyl is carcinogenic.

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