Chromium(II) oxide
Chrommonoxid
Black solid
Fixed
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Chromium (II ) oxide ( CrO ) is an inorganic chemical compound of chromium and oxygen (specifically, an oxide of chromium).
Production and representation
Chromium (II ) oxide can be recovered by reduction of chromium (III ) oxide with phosphinic acid:
Black chromium (II ) oxide is also produced during the thermal decomposition of chromium hexacarbonyl at 250 to 550 ° C in vacuum or in the reaction of chromium amalgam with nitric acid.
A hexagonal brown - red crystals can be recovered by reduction of chromium (III ) oxide with hydrogen.
Properties
Chromium (II ) oxide has a sodium chloride structure and disproportionated at high temperatures in chromium and chromium ( III) oxide.
There does not exist a compact form, but can on cubic substrates as CrxO (0.67
Uses chromium (II ) oxide as a component of toner materials and as part of chromium oxide and an intermediate thin-film structures in the electronics industry.
Use