Cr2O3 is Corundum structured and crystallizes in the trigonal R-3c space group. Cr(1) is bonded to six equivalent O(1) atoms to form a mixture of face, corner, and edge-sharing CrO6 octahedra. The corner-sharing octahedral tilt angles range from 47-60°. O(1) is bonded to four equivalent Cr(1) atoms to form a mixture of distorted corner and edge-sharing OCr4 trigonal pyramids.
Cr2O3 is Corundum structured and crystallizes in the trigonal R-3c space group. Cr(1) is bonded to six equivalent O(1) atoms to form a mixture of face, corner, and edge-sharing CrO6 octahedra. The corner-sharing octahedral tilt angles range from 47-60°. There are three shorter (1.97 Å) and three longer (2.02 Å) Cr(1)-O(1) bond lengths. O(1) is bonded to four equivalent Cr(1) atoms to form a mixture of distorted corner and edge-sharing OCr4 trigonal pyramids.