Rare copper salts

Synthesis requires chemicals that pose a danger, the synthesis is long and multi step, or the reactants are difficult to find.

Copper(II)

 * Copper(II) Monosulfide
 * Copper(II) Nitrate
 * Copper(II) Peroxide
 * Copper(II) Oxychloride

Copper(I)
__INDEX__
 * Copper(I) Acetate
 * Copper(I) Acetylide
 * Copper(I) Bromide
 * Copper(I) Chloride