Yb4O13Cl2 crystallizes in the monoclinic P2_1 space group. There are four inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 8-coordinate geometry to one O(10), one O(12), one O(2), one O(3), one O(5), one O(6), one O(8), and one O(9) atom. In the second Yb site, Yb(2) is bonded in a 7-coordinate geometry to one O(11), one O(13), one O(2), one O(4), one O(5), one O(6), one O(8), and one O(9) atom. In the third Yb site, Yb(3) is bonded in a 8-coordinate geometry to one O(10), one O(11), one O(13), one O(2), one O(3), one O(4), one O(7), and one O(8) atom. In the fourth Yb site, Yb(4) is bonded in a 5-coordinate geometry to one O(1), one O(12), one O(3), one O(4), one O(5), one O(7), and one O(9) atom. There are thirteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted L-shaped geometry to one Yb(4) and one O(10) atom. In the second O site, O(2) is bonded in a distorted see-saw-like geometry to one Yb(1), one Yb(2), one Yb(3), and one O(7) atom. In the third O site, O(3) is bonded to one Yb(1), one Yb(3), one Yb(4), and one Cl(1) atom to form distorted corner-sharing OYb3Cl trigonal pyramids. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Yb(2), one Yb(3), one Yb(4), and one O(8) atom. In the fifth O site, O(5) is bonded to one Yb(1), one Yb(2), one Yb(4), and one O(9) atom to form distorted corner-sharing OYb3O trigonal pyramids. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Yb(1), one Yb(2), and one O(9) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Yb(3), one Yb(4), and one O(2) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Yb(1), one Yb(2), one Yb(3), and one O(4) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Yb(1), one Yb(2), one Yb(4), one O(5), and one O(6) atom. In the tenth O site, O(10) is bonded in a distorted T-shaped geometry to one Yb(1), one Yb(3), and one O(1) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Yb(2), one Yb(3), and one O(13) atom. In the twelfth O site, O(12) is bonded in a T-shaped geometry to one Yb(1), one Yb(4), and one Cl(2) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Yb(2), one Yb(3), and one O(11) atom. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a single-bond geometry to one O(3) atom. In the second Cl site, Cl(2) is bonded in a single-bond geometry to one O(12) atom.
Yb4O13Cl2 crystallizes in the monoclinic P2_1 space group. There are four inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 8-coordinate geometry to one O(10), one O(12), one O(2), one O(3), one O(5), one O(6), one O(8), and one O(9) atom. The Yb(1)-O(10) bond length is 2.71 Å. The Yb(1)-O(12) bond length is 2.37 Å. The Yb(1)-O(2) bond length is 2.47 Å. The Yb(1)-O(3) bond length is 2.38 Å. The Yb(1)-O(5) bond length is 2.40 Å. The Yb(1)-O(6) bond length is 2.34 Å. The Yb(1)-O(8) bond length is 2.31 Å. The Yb(1)-O(9) bond length is 2.45 Å. In the second Yb site, Yb(2) is bonded in a 7-coordinate geometry to one O(11), one O(13), one O(2), one O(4), one O(5), one O(6), one O(8), and one O(9) atom. The Yb(2)-O(11) bond length is 2.33 Å. The Yb(2)-O(13) bond length is 2.34 Å. The Yb(2)-O(2) bond length is 2.39 Å. The Yb(2)-O(4) bond length is 2.33 Å. The Yb(2)-O(5) bond length is 2.39 Å. The Yb(2)-O(6) bond length is 2.36 Å. The Yb(2)-O(8) bond length is 2.32 Å. The Yb(2)-O(9) bond length is 2.83 Å. In the third Yb site, Yb(3) is bonded in a 8-coordinate geometry to one O(10), one O(11), one O(13), one O(2), one O(3), one O(4), one O(7), and one O(8) atom. The Yb(3)-O(10) bond length is 2.48 Å. The Yb(3)-O(11) bond length is 2.36 Å. The Yb(3)-O(13) bond length is 2.34 Å. The Yb(3)-O(2) bond length is 2.38 Å. The Yb(3)-O(3) bond length is 2.35 Å. The Yb(3)-O(4) bond length is 2.36 Å. The Yb(3)-O(7) bond length is 2.33 Å. The Yb(3)-O(8) bond length is 2.29 Å. In the fourth Yb site, Yb(4) is bonded in a 5-coordinate geometry to one O(1), one O(12), one O(3), one O(4), one O(5), one O(7), and one O(9) atom. The Yb(4)-O(1) bond length is 2.80 Å. The Yb(4)-O(12) bond length is 2.32 Å. The Yb(4)-O(3) bond length is 2.39 Å. The Yb(4)-O(4) bond length is 2.24 Å. The Yb(4)-O(5) bond length is 2.30 Å. The Yb(4)-O(7) bond length is 2.34 Å. The Yb(4)-O(9) bond length is 2.47 Å. There are thirteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted L-shaped geometry to one Yb(4) and one O(10) atom. The O(1)-O(10) bond length is 1.27 Å. In the second O site, O(2) is bonded in a distorted see-saw-like geometry to one Yb(1), one Yb(2), one Yb(3), and one O(7) atom. The O(2)-O(7) bond length is 1.40 Å. In the third O site, O(3) is bonded to one Yb(1), one Yb(3), one Yb(4), and one Cl(1) atom to form distorted corner-sharing OYb3Cl trigonal pyramids. The O(3)-Cl(1) bond length is 1.70 Å. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Yb(2), one Yb(3), one Yb(4), and one O(8) atom. The O(4)-O(8) bond length is 1.44 Å. In the fifth O site, O(5) is bonded to one Yb(1), one Yb(2), one Yb(4), and one O(9) atom to form distorted corner-sharing OYb3O trigonal pyramids. The O(5)-O(9) bond length is 1.51 Å. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Yb(1), one Yb(2), and one O(9) atom. The O(6)-O(9) bond length is 1.41 Å. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Yb(3), one Yb(4), and one O(2) atom. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Yb(1), one Yb(2), one Yb(3), and one O(4) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Yb(1), one Yb(2), one Yb(4), one O(5), and one O(6) atom. In the tenth O site, O(10) is bonded in a distorted T-shaped geometry to one Yb(1), one Yb(3), and one O(1) atom. In the eleventh O site, O(11) is bonded in a 3-coordinate geometry to one Yb(2), one Yb(3), and one O(13) atom. The O(11)-O(13) bond length is 1.36 Å. In the twelfth O site, O(12) is bonded in a T-shaped geometry to one Yb(1), one Yb(4), and one Cl(2) atom. The O(12)-Cl(2) bond length is 1.67 Å. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Yb(2), one Yb(3), and one O(11) atom. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a single-bond geometry to one O(3) atom. In the second Cl site, Cl(2) is bonded in a single-bond geometry to one O(12) atom.