CrO2 is Hydrophilite-like structured and crystallizes in the monoclinic C2/m space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(2), two equivalent O(1), and three equivalent O(3) atoms to form a mixture of edge and corner-sharing CrO6 octahedra. The corner-sharing octahedral tilt angles are 50°. In the second Cr site, Cr(2) is bonded to one O(1), two equivalent O(2), and three equivalent O(4) atoms to form a mixture of edge and corner-sharing CrO6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Cr(2) and two equivalent Cr(1) atoms. In the second O site, O(2) is bonded in a trigonal planar geometry to one Cr(1) and two equivalent Cr(2) atoms. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Cr(1) atoms. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Cr(2) atoms.
CrO2 is Hydrophilite-like structured and crystallizes in the monoclinic C2/m space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(2), two equivalent O(1), and three equivalent O(3) atoms to form a mixture of edge and corner-sharing CrO6 octahedra. The corner-sharing octahedral tilt angles are 50°. The Cr(1)-O(2) bond length is 1.89 Å. Both Cr(1)-O(1) bond lengths are 1.96 Å. There is one shorter (1.91 Å) and two longer (1.97 Å) Cr(1)-O(3) bond lengths. In the second Cr site, Cr(2) is bonded to one O(1), two equivalent O(2), and three equivalent O(4) atoms to form a mixture of edge and corner-sharing CrO6 octahedra. The corner-sharing octahedral tilt angles are 50°. The Cr(2)-O(1) bond length is 1.89 Å. Both Cr(2)-O(2) bond lengths are 1.96 Å. There is one shorter (1.90 Å) and two longer (1.97 Å) Cr(2)-O(4) bond lengths. There are four inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Cr(2) and two equivalent Cr(1) atoms. In the second O site, O(2) is bonded in a trigonal planar geometry to one Cr(1) and two equivalent Cr(2) atoms. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Cr(1) atoms. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Cr(2) atoms.