Nickel(Iii) Carbonate

Nickel(III) carbonate is a chemical compound with the formula Ni2(CO3)3. It is also known as trinickel carbonate or nickel sesquicarbonate.

Nickel(III) carbonate is an unstable and rare compound that has not been well-studied due to its instability. It is believed to exist only in solution or under specific conditions of high pressure or high temperature.

Nickel(III) carbonate can be prepared by reacting nickel(II) carbonate with a strong oxidizing agent, such as hydrogen peroxide or sodium hypochlorite, in the presence of a base. The reaction results in oxidation of the nickel(II) ion to the nickel(III) ion.

NiCO3 + H2O2 + 2NaOH → Ni2(CO3)3 + 2Na2O + 2H2O

Nickel(III) carbonate is a greenish-blue powder that is insoluble in water but soluble in acids. Its structure is not well-understood, but it is believed to consist of nickel atoms surrounded by carbonate ions in a distorted octahedral geometry.

Overall, Nickel(III) carbonate is a rare and unstable compound that has limited practical applications due to its unstable nature.