Sr(RuO3)2 crystallizes in the orthorhombic Imm2 space group. Sr(1) is bonded to two equivalent O(2), two equivalent O(3), and eight equivalent O(1) atoms to form distorted SrO12 cuboctahedra that share corners with twelve equivalent Sr(1)O12 cuboctahedra and faces with eight equivalent Ru(1)O6 octahedra. Ru(1) is bonded to one O(2), one O(3), and four equivalent O(1) atoms to form RuO6 octahedra that share corners with six equivalent Ru(1)O6 octahedra and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 12-21°. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Sr(1) and two equivalent Ru(1) atoms. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Sr(1) and two equivalent Ru(1) atoms. In the third O site, O(3) is bonded in a distorted T-shaped geometry to two equivalent Sr(1) and two equivalent Ru(1) atoms.
Sr(RuO3)2 crystallizes in the orthorhombic Imm2 space group. Sr(1) is bonded to two equivalent O(2), two equivalent O(3), and eight equivalent O(1) atoms to form distorted SrO12 cuboctahedra that share corners with twelve equivalent Sr(1)O12 cuboctahedra and faces with eight equivalent Ru(1)O6 octahedra. Both Sr(1)-O(2) bond lengths are 2.76 Å. There is one shorter (2.49 Å) and one longer (2.99 Å) Sr(1)-O(3) bond length. There are four shorter (2.58 Å) and four longer (2.89 Å) Sr(1)-O(1) bond lengths. Ru(1) is bonded to one O(2), one O(3), and four equivalent O(1) atoms to form RuO6 octahedra that share corners with six equivalent Ru(1)O6 octahedra and faces with four equivalent Sr(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 12-21°. The Ru(1)-O(2) bond length is 1.96 Å. The Ru(1)-O(3) bond length is 1.95 Å. There are two shorter (1.94 Å) and two longer (1.95 Å) Ru(1)-O(1) bond lengths. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Sr(1) and two equivalent Ru(1) atoms. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Sr(1) and two equivalent Ru(1) atoms. In the third O site, O(3) is bonded in a distorted T-shaped geometry to two equivalent Sr(1) and two equivalent Ru(1) atoms.