Oxyarsenides or arsenide oxides are chemical compounds formally containing the group AsO, with one arsenic and one oxygen atom.
So a compound with OmAsn requires cations to balance a negative charge of 2m+3n.
Some of these compounds are superconductors, but may require doping with fluoride or oxygen deficiency.
[1] Yet others undergo colossal magnetoresistance with a lowered electrical resistance in a magnetic field.
Related compounds include the oxynitrides, oxyphosphides, oxyantimonides and oxybismuthides.