Ni(CO2)3 crystallizes in the cubic I4_132 space group. Ni(1) is bonded in an octahedral geometry to six equivalent O(1) atoms. All Ni(1)-O(1) bond lengths are 2.08 Å. C(1) is bonded in a distorted bent 120 degrees geometry to two equivalent O(1) atoms. Both C(1)-O(1) bond lengths are 1.25 Å. O(1) is bonded in a bent 120 degrees geometry to one Ni(1) and one C(1) atom. Linkers: 12 [O]C(=O)C([O])=O. Metal clusters: 8 [Ni]. RCSR code: utp. The MOF has largest included sphere 8.57 A, density 0.71 g/cm3, surface area 3417.60 m2/g, accessible volume 1.09 cm3/g