Ba3Sr3(BiN)2 is (Cubic) Perovskite-derived structured and crystallizes in the hexagonal P6_3/mmc space group. Ba(1) is bonded in a distorted L-shaped geometry to two equivalent Bi(1), two equivalent Bi(2), and two equivalent N(1) atoms. Sr(1) is bonded in a linear geometry to two equivalent Bi(1), two equivalent Bi(2), and two equivalent N(1) atoms. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to six equivalent Ba(1) and six equivalent Sr(1) atoms to form BiBa6Sr6 cuboctahedra that share corners with six equivalent Bi(1)Ba6Sr6 cuboctahedra, corners with six equivalent N(1)Ba3Sr3 octahedra, faces with two equivalent Bi(1)Ba6Sr6 cuboctahedra, faces with six equivalent Bi(2)Ba6Sr6 cuboctahedra, and faces with six equivalent N(1)Ba3Sr3 octahedra. The corner-sharing octahedral tilt angles are 14°. In the second Bi site, Bi(2) is bonded to six equivalent Ba(1) and six equivalent Sr(1) atoms to form BiBa6Sr6 cuboctahedra that share corners with twelve equivalent Bi(2)Ba6Sr6 cuboctahedra, faces with six equivalent Bi(1)Ba6Sr6 cuboctahedra, and faces with eight equivalent N(1)Ba3Sr3 octahedra. N(1) is bonded to three equivalent Ba(1) and three equivalent Sr(1) atoms to form NBa3Sr3 octahedra that share corners with three equivalent Bi(1)Ba6Sr6 cuboctahedra, corners with three equivalent N(1)Ba3Sr3 octahedra, faces with three equivalent Bi(1)Ba6Sr6 cuboctahedra, faces with four equivalent Bi(2)Ba6Sr6 cuboctahedra, and  a faceface with one N(1)Ba3Sr3 octahedra. The corner-sharing octahedra are not tilted.
Ba3Sr3(BiN)2 is (Cubic) Perovskite-derived structured and crystallizes in the hexagonal P6_3/mmc space group. Ba(1) is bonded in a distorted L-shaped geometry to two equivalent Bi(1), two equivalent Bi(2), and two equivalent N(1) atoms. Both Ba(1)-Bi(1) bond lengths are 3.95 Å. Both Ba(1)-Bi(2) bond lengths are 3.82 Å. Both Ba(1)-N(1) bond lengths are 2.74 Å. Sr(1) is bonded in a linear geometry to two equivalent Bi(1), two equivalent Bi(2), and two equivalent N(1) atoms. Both Sr(1)-Bi(1) bond lengths are 3.82 Å. Both Sr(1)-Bi(2) bond lengths are 3.89 Å. Both Sr(1)-N(1) bond lengths are 2.63 Å. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded to six equivalent Ba(1) and six equivalent Sr(1) atoms to form BiBa6Sr6 cuboctahedra that share corners with six equivalent Bi(1)Ba6Sr6 cuboctahedra, corners with six equivalent N(1)Ba3Sr3 octahedra, faces with two equivalent Bi(1)Ba6Sr6 cuboctahedra, faces with six equivalent Bi(2)Ba6Sr6 cuboctahedra, and faces with six equivalent N(1)Ba3Sr3 octahedra. The corner-sharing octahedral tilt angles are 14°. In the second Bi site, Bi(2) is bonded to six equivalent Ba(1) and six equivalent Sr(1) atoms to form BiBa6Sr6 cuboctahedra that share corners with twelve equivalent Bi(2)Ba6Sr6 cuboctahedra, faces with six equivalent Bi(1)Ba6Sr6 cuboctahedra, and faces with eight equivalent N(1)Ba3Sr3 octahedra. N(1) is bonded to three equivalent Ba(1) and three equivalent Sr(1) atoms to form NBa3Sr3 octahedra that share corners with three equivalent Bi(1)Ba6Sr6 cuboctahedra, corners with three equivalent N(1)Ba3Sr3 octahedra, faces with three equivalent Bi(1)Ba6Sr6 cuboctahedra, faces with four equivalent Bi(2)Ba6Sr6 cuboctahedra, and  a faceface with one N(1)Ba3Sr3 octahedra. The corner-sharing octahedra are not tilted.