Ba10Ge7O3 crystallizes in the hexagonal P-6m2 space group. There are four inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a distorted hexagonal planar geometry to two equivalent Ge(2) and four equivalent Ge(1) atoms. In the second Ba site, Ba(2) is bonded in a distorted bent 120 degrees geometry to four equivalent Ge(1) and two equivalent O(1) atoms. In the third Ba site, Ba(3) is bonded in a distorted bent 150 degrees geometry to one Ge(2), two equivalent Ge(1), and two equivalent O(1) atoms. In the fourth Ba site, Ba(4) is bonded to twelve equivalent Ge(1) atoms to form face-sharing BaGe12 cuboctahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Ba(3), two equivalent Ba(1), two equivalent Ba(2), two equivalent Ba(4), and two equivalent Ge(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to three equivalent Ba(3) and six equivalent Ba(1) atoms. O(1) is bonded to two equivalent Ba(2) and two equivalent Ba(3) atoms to form distorted corner-sharing OBa4 tetrahedra.
Ba10Ge7O3 crystallizes in the hexagonal P-6m2 space group. There are four inequivalent Ba sites. In the first Ba site, Ba(1) is bonded in a distorted hexagonal planar geometry to two equivalent Ge(2) and four equivalent Ge(1) atoms. Both Ba(1)-Ge(2) bond lengths are 3.65 Å. All Ba(1)-Ge(1) bond lengths are 3.54 Å. In the second Ba site, Ba(2) is bonded in a distorted bent 120 degrees geometry to four equivalent Ge(1) and two equivalent O(1) atoms. All Ba(2)-Ge(1) bond lengths are 3.55 Å. Both Ba(2)-O(1) bond lengths are 2.66 Å. In the third Ba site, Ba(3) is bonded in a distorted bent 150 degrees geometry to one Ge(2), two equivalent Ge(1), and two equivalent O(1) atoms. The Ba(3)-Ge(2) bond length is 3.42 Å. Both Ba(3)-Ge(1) bond lengths are 3.50 Å. Both Ba(3)-O(1) bond lengths are 2.66 Å. In the fourth Ba site, Ba(4) is bonded to twelve equivalent Ge(1) atoms to form face-sharing BaGe12 cuboctahedra. All Ba(4)-Ge(1) bond lengths are 3.58 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to one Ba(3), two equivalent Ba(1), two equivalent Ba(2), two equivalent Ba(4), and two equivalent Ge(1) atoms. There is one shorter (2.53 Å) and one longer (2.56 Å) Ge(1)-Ge(1) bond length. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to three equivalent Ba(3) and six equivalent Ba(1) atoms. O(1) is bonded to two equivalent Ba(2) and two equivalent Ba(3) atoms to form distorted corner-sharing OBa4 tetrahedra.