CoAlO3 is Ilmenite structured and crystallizes in the trigonal R-3 space group. Co(1) is bonded to six equivalent O(1) atoms to form CoO6 octahedra that share corners with nine equivalent Al(1)O6 octahedra, edges with three equivalent Co(1)O6 octahedra, and  a faceface with one Al(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-60°. Al(1) is bonded to six equivalent O(1) atoms to form AlO6 octahedra that share corners with nine equivalent Co(1)O6 octahedra, edges with three equivalent Al(1)O6 octahedra, and  a faceface with one Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-60°. O(1) is bonded to two equivalent Co(1) and two equivalent Al(1) atoms to form a mixture of distorted edge and corner-sharing OAl2Co2 trigonal pyramids.
CoAlO3 is Ilmenite structured and crystallizes in the trigonal R-3 space group. Co(1) is bonded to six equivalent O(1) atoms to form CoO6 octahedra that share corners with nine equivalent Al(1)O6 octahedra, edges with three equivalent Co(1)O6 octahedra, and  a faceface with one Al(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-60°. There are three shorter (1.93 Å) and three longer (1.94 Å) Co(1)-O(1) bond lengths. Al(1) is bonded to six equivalent O(1) atoms to form AlO6 octahedra that share corners with nine equivalent Co(1)O6 octahedra, edges with three equivalent Al(1)O6 octahedra, and  a faceface with one Co(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-60°. There are three shorter (1.87 Å) and three longer (1.98 Å) Al(1)-O(1) bond lengths. O(1) is bonded to two equivalent Co(1) and two equivalent Al(1) atoms to form a mixture of distorted edge and corner-sharing OAl2Co2 trigonal pyramids.