Chromite (compound)

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This article is about oxyanions of chromium(III). For the mineral chromite, see chromite. For oxyanions of chromium(VI), see Chromate.
Crystal structure of spinel

In

IUPAC naming conventions, chromate(III) is preferred to chromite.[citation needed
]

  1. For compounds containing an oxyanion of chromium in oxidation state of +3
  2. For other compounds of chromium(III) as a means of distinguishing a chemical species such as hexacyanochromite(III). [Cr(CN)6]3− from an analogous compound in which chromium is a different oxidation state.

The mineral chromite is an

magnesiochromite (MgCr2O4);.[1] Zincochromite is another example. The crystal structure of the acid, HCrO2 has been determined by neutron diffraction.[2]

Chromites may be formed by reaction of chromium(III) oxide with a metal oxide:[3]

Cr2O3 + MgO → MgCr2O4

References

  1. ^ http://www.mindat.org/min-8675.html Mindat
  2. doi:10.1107/S0365110X63003182
    .
  3. doi:10.1002/9780470132456.ch26
    .
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