Trinickel carbide

Crystal structure
__ Ni      __ C
General
Surname	Trinickel carbide
other names	Nickel carbide
Ratio formula	Ni 3 C
Brief description	gray-black solid
External identifiers / databases
CAS number 12012-02-1 Wikidata Q4214564
properties
Molar mass	188.14 g mol −1
Physical state	firmly
density	7.957 g cm −3
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Trinickel carbide is an inorganic chemical compound of nickel from the group of carbides .

Extraction and presentation

Trinickel carbide can be obtained by reacting nickel with carbon monoxide .

${\displaystyle \mathrm {3\ Ni+2\ CO\longrightarrow Ni_{3}C+CO_{2}} }$

properties

Trinickel carbide is a gray-black powder that is temperature-resistant up to 380–400 ° C. Hydrochloric acid decomposes it at room temperature, but no deposition of carbon occurs. Dilute nitric acid dissolves it, dilute sulfuric acid leads to the deposition of carbon. Its crystal structure is a trigonal close packing of the nickel atoms with the space group R 3 c (space group no. 167) and the lattice parameters a = 458 pm and c = 1299 pm.

Individual evidence

1. ↑ ^{a b c d} Georg Brauer (Ed.) U. a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume III, Ferdinand Enke, Stuttgart 1981, ISBN 3-432-87823-0 , p. 1696.
2. ^ ^{A b} Jean d'Ans, Ellen Lax, Roger Blachnik: Pocket book for chemists and physicists . Springer DE, 1998, ISBN 3-642-58842-5 , pp. 638 ( limited preview in Google Book search).
3. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.