BaNiO2 crystallizes in the orthorhombic Cmcm space group. Ba(1) is bonded in a distorted body-centered cubic geometry to eight equivalent O(1) atoms. Ni(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. O(1) is bonded to four equivalent Ba(1) and two equivalent Ni(1) atoms to form a mixture of distorted corner, edge, and face-sharing OBa4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-73°.
BaNiO2 crystallizes in the orthorhombic Cmcm space group. Ba(1) is bonded in a distorted body-centered cubic geometry to eight equivalent O(1) atoms. There are a spread of Ba(1)-O(1) bond distances ranging from 2.73-2.97 Å. Ni(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. All Ni(1)-O(1) bond lengths are 1.91 Å. O(1) is bonded to four equivalent Ba(1) and two equivalent Ni(1) atoms to form a mixture of distorted corner, edge, and face-sharing OBa4Ni2 octahedra. The corner-sharing octahedral tilt angles range from 0-73°.