BaEu(WO3)2 is (Cubic) Perovskite-derived structured and crystallizes in the tetragonal P4_2/mmc space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form BaO12 cuboctahedra that share corners with four equivalent Ba(2)O12 cuboctahedra, corners with four equivalent Eu(1)O12 cuboctahedra, corners with four equivalent Eu(2)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Eu(1)O12 cuboctahedra, faces with two equivalent Eu(2)O12 cuboctahedra, and faces with eight equivalent W(1)O6 octahedra. In the second Ba site, Ba(2) is bonded to four equivalent O(3) and eight equivalent O(2) atoms to form BaO12 cuboctahedra that share corners with four equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Eu(1)O12 cuboctahedra, corners with four equivalent Eu(2)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Eu(2)O12 cuboctahedra, and faces with eight equivalent W(1)O6 octahedra. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to four equivalent O(3) and eight equivalent O(1) atoms to form EuO12 cuboctahedra that share corners with four equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Ba(2)O12 cuboctahedra, corners with four equivalent Eu(2)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Eu(1)O12 cuboctahedra, faces with two equivalent Eu(2)O12 cuboctahedra, and faces with eight equivalent W(1)O6 octahedra. In the second Eu site, Eu(2) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form EuO12 cuboctahedra that share corners with four equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Ba(2)O12 cuboctahedra, corners with four equivalent Eu(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Eu(1)O12 cuboctahedra, and faces with eight equivalent W(1)O6 octahedra. W(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form WO6 octahedra that share corners with six equivalent W(1)O6 octahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Eu(1)O12 cuboctahedra, and faces with two equivalent Eu(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-5°. There are three inequivalent O sites. In the first O site, O(3) is bonded to one Ba(1), one Ba(2), one Eu(1), one Eu(2), and two equivalent W(1) atoms to form distorted OBa2Eu2W2 octahedra that share corners with six equivalent O(3)Ba2Eu2W2 octahedra, corners with eight equivalent O(2)Ba3EuW2 octahedra, corners with eight equivalent O(1)BaEu3W2 octahedra, edges with four equivalent O(3)Ba2Eu2W2 octahedra, faces with four equivalent O(2)Ba3EuW2 octahedra, and faces with four equivalent O(1)BaEu3W2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the second O site, O(1) is bonded to one Ba(1), one Eu(2), two equivalent Eu(1), and two equivalent W(1) atoms to form distorted OBaEu3W2 octahedra that share corners with six equivalent O(2)Ba3EuW2 octahedra, corners with eight equivalent O(3)Ba2Eu2W2 octahedra, corners with eight equivalent O(1)BaEu3W2 octahedra, edges with four equivalent O(1)BaEu3W2 octahedra, faces with two equivalent O(2)Ba3EuW2 octahedra, faces with two equivalent O(1)BaEu3W2 octahedra, and faces with four equivalent O(3)Ba2Eu2W2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the third O site, O(2) is bonded to one Ba(1), two equivalent Ba(2), one Eu(2), and two equivalent W(1) atoms to form distorted OBa3EuW2 octahedra that share corners with six equivalent O(1)BaEu3W2 octahedra, corners with eight equivalent O(3)Ba2Eu2W2 octahedra, corners with eight equivalent O(2)Ba3EuW2 octahedra, edges with four equivalent O(2)Ba3EuW2 octahedra, faces with two equivalent O(2)Ba3EuW2 octahedra, faces with two equivalent O(1)BaEu3W2 octahedra, and faces with four equivalent O(3)Ba2Eu2W2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°.
BaEu(WO3)2 is (Cubic) Perovskite-derived structured and crystallizes in the tetragonal P4_2/mmc space group. There are two inequivalent Ba sites. In the first Ba site, Ba(1) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form BaO12 cuboctahedra that share corners with four equivalent Ba(2)O12 cuboctahedra, corners with four equivalent Eu(1)O12 cuboctahedra, corners with four equivalent Eu(2)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Eu(1)O12 cuboctahedra, faces with two equivalent Eu(2)O12 cuboctahedra, and faces with eight equivalent W(1)O6 octahedra. All Ba(1)-O(1) bond lengths are 3.01 Å. All Ba(1)-O(2) bond lengths are 2.95 Å. All Ba(1)-O(3) bond lengths are 2.97 Å. In the second Ba site, Ba(2) is bonded to four equivalent O(3) and eight equivalent O(2) atoms to form BaO12 cuboctahedra that share corners with four equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Eu(1)O12 cuboctahedra, corners with four equivalent Eu(2)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Eu(2)O12 cuboctahedra, and faces with eight equivalent W(1)O6 octahedra. All Ba(2)-O(3) bond lengths are 2.98 Å. There are four shorter (2.89 Å) and four longer (2.92 Å) Ba(2)-O(2) bond lengths. There are two inequivalent Eu sites. In the first Eu site, Eu(1) is bonded to four equivalent O(3) and eight equivalent O(1) atoms to form EuO12 cuboctahedra that share corners with four equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Ba(2)O12 cuboctahedra, corners with four equivalent Eu(2)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Eu(1)O12 cuboctahedra, faces with two equivalent Eu(2)O12 cuboctahedra, and faces with eight equivalent W(1)O6 octahedra. All Eu(1)-O(3) bond lengths are 2.90 Å. There are four shorter (2.83 Å) and four longer (2.86 Å) Eu(1)-O(1) bond lengths. In the second Eu site, Eu(2) is bonded to four equivalent O(1), four equivalent O(2), and four equivalent O(3) atoms to form EuO12 cuboctahedra that share corners with four equivalent Ba(1)O12 cuboctahedra, corners with four equivalent Ba(2)O12 cuboctahedra, corners with four equivalent Eu(1)O12 cuboctahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Eu(1)O12 cuboctahedra, and faces with eight equivalent W(1)O6 octahedra. All Eu(2)-O(1) bond lengths are 2.99 Å. All Eu(2)-O(2) bond lengths are 2.92 Å. All Eu(2)-O(3) bond lengths are 2.91 Å. W(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form WO6 octahedra that share corners with six equivalent W(1)O6 octahedra, faces with two equivalent Ba(1)O12 cuboctahedra, faces with two equivalent Ba(2)O12 cuboctahedra, faces with two equivalent Eu(1)O12 cuboctahedra, and faces with two equivalent Eu(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 2-5°. Both W(1)-O(1) bond lengths are 2.07 Å. Both W(1)-O(2) bond lengths are 2.10 Å. Both W(1)-O(3) bond lengths are 2.05 Å. There are three inequivalent O sites. In the first O site, O(3) is bonded to one Ba(1), one Ba(2), one Eu(1), one Eu(2), and two equivalent W(1) atoms to form distorted OBa2Eu2W2 octahedra that share corners with six equivalent O(3)Ba2Eu2W2 octahedra, corners with eight equivalent O(2)Ba3EuW2 octahedra, corners with eight equivalent O(1)BaEu3W2 octahedra, edges with four equivalent O(3)Ba2Eu2W2 octahedra, faces with four equivalent O(2)Ba3EuW2 octahedra, and faces with four equivalent O(1)BaEu3W2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the second O site, O(1) is bonded to one Ba(1), one Eu(2), two equivalent Eu(1), and two equivalent W(1) atoms to form distorted OBaEu3W2 octahedra that share corners with six equivalent O(2)Ba3EuW2 octahedra, corners with eight equivalent O(3)Ba2Eu2W2 octahedra, corners with eight equivalent O(1)BaEu3W2 octahedra, edges with four equivalent O(1)BaEu3W2 octahedra, faces with two equivalent O(2)Ba3EuW2 octahedra, faces with two equivalent O(1)BaEu3W2 octahedra, and faces with four equivalent O(3)Ba2Eu2W2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°. In the third O site, O(2) is bonded to one Ba(1), two equivalent Ba(2), one Eu(2), and two equivalent W(1) atoms to form distorted OBa3EuW2 octahedra that share corners with six equivalent O(1)BaEu3W2 octahedra, corners with eight equivalent O(3)Ba2Eu2W2 octahedra, corners with eight equivalent O(2)Ba3EuW2 octahedra, edges with four equivalent O(2)Ba3EuW2 octahedra, faces with two equivalent O(2)Ba3EuW2 octahedra, faces with two equivalent O(1)BaEu3W2 octahedra, and faces with four equivalent O(3)Ba2Eu2W2 octahedra. The corner-sharing octahedral tilt angles range from 0-62°.