BaSiO3 crystallizes in the orthorhombic P2_12_12_1 space group. Ba(1) is bonded in a 8-coordinate geometry to two equivalent O(3), three equivalent O(1), and three equivalent O(2) atoms. Si(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form corner-sharing SiO4 tetrahedra. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to three equivalent Ba(1) and one Si(1) atom. In the second O site, O(2) is bonded in a 1-coordinate geometry to three equivalent Ba(1) and one Si(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to two equivalent Ba(1) and two equivalent Si(1) atoms.
BaSiO3 crystallizes in the orthorhombic P2_12_12_1 space group. Ba(1) is bonded in a 8-coordinate geometry to two equivalent O(3), three equivalent O(1), and three equivalent O(2) atoms. There is one shorter (2.95 Å) and one longer (3.35 Å) Ba(1)-O(3) bond length. There are a spread of Ba(1)-O(1) bond distances ranging from 2.71-3.05 Å. There are a spread of Ba(1)-O(2) bond distances ranging from 2.66-2.99 Å. Si(1) is bonded to one O(1), one O(2), and two equivalent O(3) atoms to form corner-sharing SiO4 tetrahedra. The Si(1)-O(1) bond length is 1.62 Å. The Si(1)-O(2) bond length is 1.62 Å. Both Si(1)-O(3) bond lengths are 1.68 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to three equivalent Ba(1) and one Si(1) atom. In the second O site, O(2) is bonded in a 1-coordinate geometry to three equivalent Ba(1) and one Si(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to two equivalent Ba(1) and two equivalent Si(1) atoms.