SbO2 crystallizes in the triclinic P1 space group. There are twelve inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(2), one O(3), one O(4), one O(6), one O(7), and one O(8) atom to form SbO6 octahedra that share  a cornercorner with one Sb(12)O4 trigonal pyramid,  an edgeedge with one Sb(3)O6 octahedra, and edges with two equivalent Sb(6)O6 octahedra. In the second Sb site, Sb(2) is bonded in a distorted T-shaped geometry to one O(15), one O(16), and one O(20) atom. In the third Sb site, Sb(3) is bonded to one O(11), one O(12), one O(5), one O(6), one O(8), and one O(9) atom to form edge-sharing SbO6 octahedra. In the fourth Sb site, Sb(4) is bonded in a 3-coordinate geometry to one O(1), one O(3), and one O(4) atom. In the fifth Sb site, Sb(5) is bonded in a distorted T-shaped geometry to one O(10), one O(11), and one O(9) atom. In the sixth Sb site, Sb(6) is bonded to one O(1), one O(12), one O(2), one O(3), one O(7), and one O(8) atom to form SbO6 octahedra that share  a cornercorner with one Sb(12)O4 trigonal pyramid,  an edgeedge with one Sb(3)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. In the seventh Sb site, Sb(7) is bonded to one O(13), one O(14), one O(16), one O(18), one O(19), and one O(20) atom to form edge-sharing SbO6 octahedra. In the eighth Sb site, Sb(8) is bonded to one O(10), one O(11), one O(14), one O(15), one O(20), and one O(5) atom to form edge-sharing SbO6 octahedra. In the ninth Sb site, Sb(9) is bonded to one O(17), one O(18), one O(19), one O(21), one O(22), and one O(23) atom to form SbO6 octahedra that share corners with two equivalent Sb(12)O4 trigonal pyramids and  an edgeedge with one Sb(7)O6 octahedra. In the tenth Sb site, Sb(10) is bonded in a 4-coordinate geometry to one O(13), one O(17), one O(19), and one O(24) atom. In the eleventh Sb site, Sb(11) is bonded in a 5-coordinate geometry to one O(13), one O(17), one O(18), one O(22), and one O(23) atom. In the twelfth Sb site, Sb(12) is bonded to one O(21), one O(22), one O(24), and one O(7) atom to form distorted corner-sharing SbO4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 26-68°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to one Sb(4) and one Sb(6) atom. In the second O site, O(2) is bonded in a water-like geometry to one Sb(1) and one Sb(6) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Sb(1), one Sb(4), and one Sb(6) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one Sb(1) and one Sb(4) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one Sb(3) and one Sb(8) atom. In the sixth O site, O(6) is bonded in a water-like geometry to one Sb(1) and one Sb(3) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Sb(1), one Sb(12), and one Sb(6) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Sb(1), one Sb(3), and one Sb(6) atom. In the ninth O site, O(9) is bonded in a water-like geometry to one Sb(3) and one Sb(5) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one Sb(5) and one Sb(8) atom. In the eleventh O site, O(11) is bonded in a distorted T-shaped geometry to one Sb(3), one Sb(5), and one Sb(8) atom. In the twelfth O site, O(12) is bonded in a water-like geometry to one Sb(3) and one Sb(6) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Sb(10), one Sb(11), and one Sb(7) atom. In the fourteenth O site, O(14) is bonded in a water-like geometry to one Sb(7) and one Sb(8) atom. In the fifteenth O site, O(15) is bonded in a water-like geometry to one Sb(2) and one Sb(8) atom. In the sixteenth O site, O(16) is bonded in a water-like geometry to one Sb(2) and one Sb(7) atom. In the seventeenth O site, O(17) is bonded in a distorted water-like geometry to one Sb(10), one Sb(11), and one Sb(9) atom. In the eighteenth O site, O(18) is bonded in a distorted water-like geometry to one Sb(11), one Sb(7), and one Sb(9) atom. In the nineteenth O site, O(19) is bonded in a distorted trigonal non-coplanar geometry to one Sb(10), one Sb(7), and one Sb(9) atom. In the twentieth O site, O(20) is bonded in a distorted T-shaped geometry to one Sb(2), one Sb(7), and one Sb(8) atom. In the twenty-first O site, O(21) is bonded in a bent 150 degrees geometry to one Sb(12) and one Sb(9) atom. In the twenty-second O site, O(22) is bonded in a distorted trigonal planar geometry to one Sb(11), one Sb(12), and one Sb(9) atom. In the twenty-third O site, O(23) is bonded in a water-like geometry to one Sb(11) and one Sb(9) atom. In the twenty-fourth O site, O(24) is bonded in a bent 150 degrees geometry to one Sb(10) and one Sb(12) atom.
SbO2 crystallizes in the triclinic P1 space group. There are twelve inequivalent Sb sites. In the first Sb site, Sb(1) is bonded to one O(2), one O(3), one O(4), one O(6), one O(7), and one O(8) atom to form SbO6 octahedra that share  a cornercorner with one Sb(12)O4 trigonal pyramid,  an edgeedge with one Sb(3)O6 octahedra, and edges with two equivalent Sb(6)O6 octahedra. The Sb(1)-O(2) bond length is 2.01 Å. The Sb(1)-O(3) bond length is 2.17 Å. The Sb(1)-O(4) bond length is 1.96 Å. The Sb(1)-O(6) bond length is 2.00 Å. The Sb(1)-O(7) bond length is 2.11 Å. The Sb(1)-O(8) bond length is 2.15 Å. In the second Sb site, Sb(2) is bonded in a distorted T-shaped geometry to one O(15), one O(16), and one O(20) atom. The Sb(2)-O(15) bond length is 2.01 Å. The Sb(2)-O(16) bond length is 2.02 Å. The Sb(2)-O(20) bond length is 2.06 Å. In the third Sb site, Sb(3) is bonded to one O(11), one O(12), one O(5), one O(6), one O(8), and one O(9) atom to form edge-sharing SbO6 octahedra. The Sb(3)-O(11) bond length is 2.12 Å. The Sb(3)-O(12) bond length is 2.04 Å. The Sb(3)-O(5) bond length is 2.01 Å. The Sb(3)-O(6) bond length is 2.00 Å. The Sb(3)-O(8) bond length is 2.07 Å. The Sb(3)-O(9) bond length is 1.99 Å. In the fourth Sb site, Sb(4) is bonded in a 3-coordinate geometry to one O(1), one O(3), and one O(4) atom. The Sb(4)-O(1) bond length is 2.00 Å. The Sb(4)-O(3) bond length is 2.08 Å. The Sb(4)-O(4) bond length is 2.00 Å. In the fifth Sb site, Sb(5) is bonded in a distorted T-shaped geometry to one O(10), one O(11), and one O(9) atom. The Sb(5)-O(10) bond length is 2.00 Å. The Sb(5)-O(11) bond length is 2.07 Å. The Sb(5)-O(9) bond length is 2.04 Å. In the sixth Sb site, Sb(6) is bonded to one O(1), one O(12), one O(2), one O(3), one O(7), and one O(8) atom to form SbO6 octahedra that share  a cornercorner with one Sb(12)O4 trigonal pyramid,  an edgeedge with one Sb(3)O6 octahedra, and edges with two equivalent Sb(1)O6 octahedra. The Sb(6)-O(1) bond length is 1.96 Å. The Sb(6)-O(12) bond length is 1.95 Å. The Sb(6)-O(2) bond length is 2.02 Å. The Sb(6)-O(3) bond length is 2.16 Å. The Sb(6)-O(7) bond length is 2.11 Å. The Sb(6)-O(8) bond length is 2.17 Å. In the seventh Sb site, Sb(7) is bonded to one O(13), one O(14), one O(16), one O(18), one O(19), and one O(20) atom to form edge-sharing SbO6 octahedra. The Sb(7)-O(13) bond length is 1.97 Å. The Sb(7)-O(14) bond length is 2.01 Å. The Sb(7)-O(16) bond length is 2.01 Å. The Sb(7)-O(18) bond length is 1.99 Å. The Sb(7)-O(19) bond length is 2.12 Å. The Sb(7)-O(20) bond length is 2.15 Å. In the eighth Sb site, Sb(8) is bonded to one O(10), one O(11), one O(14), one O(15), one O(20), and one O(5) atom to form edge-sharing SbO6 octahedra. The Sb(8)-O(10) bond length is 2.00 Å. The Sb(8)-O(11) bond length is 2.15 Å. The Sb(8)-O(14) bond length is 1.97 Å. The Sb(8)-O(15) bond length is 1.99 Å. The Sb(8)-O(20) bond length is 2.17 Å. The Sb(8)-O(5) bond length is 2.00 Å. In the ninth Sb site, Sb(9) is bonded to one O(17), one O(18), one O(19), one O(21), one O(22), and one O(23) atom to form SbO6 octahedra that share corners with two equivalent Sb(12)O4 trigonal pyramids and  an edgeedge with one Sb(7)O6 octahedra. The Sb(9)-O(17) bond length is 2.03 Å. The Sb(9)-O(18) bond length is 2.04 Å. The Sb(9)-O(19) bond length is 2.22 Å. The Sb(9)-O(21) bond length is 1.96 Å. The Sb(9)-O(22) bond length is 2.04 Å. The Sb(9)-O(23) bond length is 1.97 Å. In the tenth Sb site, Sb(10) is bonded in a 4-coordinate geometry to one O(13), one O(17), one O(19), and one O(24) atom. The Sb(10)-O(13) bond length is 2.63 Å. The Sb(10)-O(17) bond length is 2.00 Å. The Sb(10)-O(19) bond length is 2.08 Å. The Sb(10)-O(24) bond length is 2.01 Å. In the eleventh Sb site, Sb(11) is bonded in a 5-coordinate geometry to one O(13), one O(17), one O(18), one O(22), and one O(23) atom. The Sb(11)-O(13) bond length is 2.10 Å. The Sb(11)-O(17) bond length is 2.69 Å. The Sb(11)-O(18) bond length is 2.65 Å. The Sb(11)-O(22) bond length is 2.06 Å. The Sb(11)-O(23) bond length is 2.02 Å. In the twelfth Sb site, Sb(12) is bonded to one O(21), one O(22), one O(24), and one O(7) atom to form distorted corner-sharing SbO4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 26-68°. The Sb(12)-O(21) bond length is 1.99 Å. The Sb(12)-O(22) bond length is 2.59 Å. The Sb(12)-O(24) bond length is 1.95 Å. The Sb(12)-O(7) bond length is 2.25 Å. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded in a water-like geometry to one Sb(4) and one Sb(6) atom. In the second O site, O(2) is bonded in a water-like geometry to one Sb(1) and one Sb(6) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one Sb(1), one Sb(4), and one Sb(6) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one Sb(1) and one Sb(4) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one Sb(3) and one Sb(8) atom. In the sixth O site, O(6) is bonded in a water-like geometry to one Sb(1) and one Sb(3) atom. In the seventh O site, O(7) is bonded in a distorted trigonal non-coplanar geometry to one Sb(1), one Sb(12), and one Sb(6) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one Sb(1), one Sb(3), and one Sb(6) atom. In the ninth O site, O(9) is bonded in a water-like geometry to one Sb(3) and one Sb(5) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one Sb(5) and one Sb(8) atom. In the eleventh O site, O(11) is bonded in a distorted T-shaped geometry to one Sb(3), one Sb(5), and one Sb(8) atom. In the twelfth O site, O(12) is bonded in a water-like geometry to one Sb(3) and one Sb(6) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Sb(10), one Sb(11), and one Sb(7) atom. In the fourteenth O site, O(14) is bonded in a water-like geometry to one Sb(7) and one Sb(8) atom. In the fifteenth O site, O(15) is bonded in a water-like geometry to one Sb(2) and one Sb(8) atom. In the sixteenth O site, O(16) is bonded in a water-like geometry to one Sb(2) and one Sb(7) atom. In the seventeenth O site, O(17) is bonded in a distorted water-like geometry to one Sb(10), one Sb(11), and one Sb(9) atom. In the eighteenth O site, O(18) is bonded in a distorted water-like geometry to one Sb(11), one Sb(7), and one Sb(9) atom. In the nineteenth O site, O(19) is bonded in a distorted trigonal non-coplanar geometry to one Sb(10), one Sb(7), and one Sb(9) atom. In the twentieth O site, O(20) is bonded in a distorted T-shaped geometry to one Sb(2), one Sb(7), and one Sb(8) atom. In the twenty-first O site, O(21) is bonded in a bent 150 degrees geometry to one Sb(12) and one Sb(9) atom. In the twenty-second O site, O(22) is bonded in a distorted trigonal planar geometry to one Sb(11), one Sb(12), and one Sb(9) atom. In the twenty-third O site, O(23) is bonded in a water-like geometry to one Sb(11) and one Sb(9) atom. In the twenty-fourth O site, O(24) is bonded in a bent 150 degrees geometry to one Sb(10) and one Sb(12) atom.