Nickeltetracarbonyl

• Nickel carbonyl
• Tetracarbonylnickel
• "liquid death"

Colorless liquid

Liquid

1.32 g · cm -3

-25 ° C

43 ° C.

425 hPa ( 20 ° C)

Very poor in water (2 mg · l-1 at 20 ° C)

Risk

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Nickel carbonyl is a colorless liquid. This substance belongs to the group of metal carbonyls. Of particular importance in the manufacture of nickel tetracarbonyl is Reinstnickel and as a catalyst.

History

Nickel tetracarbonyl was discovered in 1890 by German - English chemist Ludwig Mond.

Production and representation

Nickel carbonyl is formed on contact of finely divided nickel powder with carbon monoxide at 80 ° C. After its discoverer called this synthesis also Mond process, the thus obtained nickel also "Moon Nickel":

Chemical Properties

Nickel tetracarbonyl ignites at about 60 ° C in air. It reacts violently with oxidants ( risk of explosion). It decomposes above 160 ° C in elemental nickel and carbon monoxide. In nickel tetracarbonyl nickel has the connections in otherwise rare oxidation number 0

Use

Reinstnickel with a content of> 99.9 % is represented by thermal decomposition of ( distillation is easy to clean ) nickel tetracarbonyl (see Mond process ). Nickel tetracarbonyl often serves as a raw material for organometallic Ni compounds that are used inter alia as versatile catalysts. The compound also serves as a catalyst for the hydrocarboxylation.

Safety

Nickel carbonyl is highly toxic and probably carcinogenic. In air, it can spontaneously combust ( risk of explosion).