Cu2(OH)2CO3 + 8(NH3•H2O) → [Cu(NH3)4]CO3 + [Cu(NH3)4](OH)2 + 8H2O
Copper dihydroxocarbonate react with ammonium hydroxide to produce tetraamminecopper(II) carbonate, tetraamminecopper(II) hydroxide and water. Ammonium hydroxide - concentrated solution.