SrTaO2N crystallizes in the orthorhombic Pmc2_1 space group. Sr(1) is bonded to four equivalent N(1), four equivalent O(1), and four equivalent O(2) atoms to form distorted SrN4O8 cuboctahedra that share corners with twelve equivalent Sr(1)N4O8 cuboctahedra, faces with six equivalent Sr(1)N4O8 cuboctahedra, and faces with eight equivalent Ta(1)N2O4 octahedra. Ta(1) is bonded to two equivalent N(1), two equivalent O(1), and two equivalent O(2) atoms to form TaN2O4 octahedra that share corners with six equivalent Ta(1)N2O4 octahedra and faces with eight equivalent Sr(1)N4O8 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-15°. N(1) is bonded in a distorted linear geometry to four equivalent Sr(1) and two equivalent Ta(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to four equivalent Sr(1) and two equivalent Ta(1) atoms. In the second O site, O(2) is bonded in a 6-coordinate geometry to four equivalent Sr(1) and two equivalent Ta(1) atoms.
SrTaO2N crystallizes in the orthorhombic Pmc2_1 space group. Sr(1) is bonded to four equivalent N(1), four equivalent O(1), and four equivalent O(2) atoms to form distorted SrN4O8 cuboctahedra that share corners with twelve equivalent Sr(1)N4O8 cuboctahedra, faces with six equivalent Sr(1)N4O8 cuboctahedra, and faces with eight equivalent Ta(1)N2O4 octahedra. There are two shorter (2.91 Å) and two longer (2.93 Å) Sr(1)-N(1) bond lengths. There are a spread of Sr(1)-O(1) bond distances ranging from 2.72-3.12 Å. There are two shorter (2.64 Å) and two longer (3.04 Å) Sr(1)-O(2) bond lengths. Ta(1) is bonded to two equivalent N(1), two equivalent O(1), and two equivalent O(2) atoms to form TaN2O4 octahedra that share corners with six equivalent Ta(1)N2O4 octahedra and faces with eight equivalent Sr(1)N4O8 cuboctahedra. The corner-sharing octahedral tilt angles range from 1-15°. There is one shorter (1.91 Å) and one longer (2.07 Å) Ta(1)-N(1) bond length. Both Ta(1)-O(1) bond lengths are 2.02 Å. There is one shorter (2.02 Å) and one longer (2.28 Å) Ta(1)-O(2) bond length. N(1) is bonded in a distorted linear geometry to four equivalent Sr(1) and two equivalent Ta(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to four equivalent Sr(1) and two equivalent Ta(1) atoms. In the second O site, O(2) is bonded in a 6-coordinate geometry to four equivalent Sr(1) and two equivalent Ta(1) atoms.