Nickel(II) phosphate

Nickel phosphate is an inorganic compound with the formula Ni₃₂. It is a mint green paramagnetic solid that is insoluble in water.

Hydrated nickel(II) phosphate

The hydrate Ni₃₂·8 is a light green solid, which can be prepared by hydrothermal synthesis and also occurs as the mineral arupite. It features octahedral Ni centers, which are bound to water and phosphate.