(YSn3(SeO4)2)2Cl2 crystallizes in the orthorhombic Pmmn space group. The structure consists of two hydrochloric acid atoms inside a YSn3(SeO4)2 framework. In the YSn3(SeO4)2 framework, Y(1) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a distorted rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(3) atoms. In the second Sn site, Sn(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. Se(1) is bonded in a trigonal non-coplanar geometry to one O(2) and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Y(1), one Sn(2), and two equivalent Sn(1) atoms to form a mixture of corner and edge-sharing OYSn3 tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Y(1), one Sn(2), and one Se(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Y(1), one Sn(1), and one Se(1) atom.
(YSn3(SeO4)2)2Cl2 crystallizes in the orthorhombic Pmmn space group. The structure consists of two hydrochloric acid atoms inside a YSn3(SeO4)2 framework. In the YSn3(SeO4)2 framework, Y(1) is bonded in a body-centered cubic geometry to two equivalent O(1), two equivalent O(2), and four equivalent O(3) atoms. Both Y(1)-O(1) bond lengths are 2.27 Å. Both Y(1)-O(2) bond lengths are 2.40 Å. All Y(1)-O(3) bond lengths are 2.75 Å. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a distorted rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(3) atoms. Both Sn(1)-O(1) bond lengths are 2.28 Å. Both Sn(1)-O(3) bond lengths are 2.46 Å. In the second Sn site, Sn(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Sn(2)-O(1) bond lengths are 2.21 Å. Both Sn(2)-O(2) bond lengths are 2.59 Å. Se(1) is bonded in a trigonal non-coplanar geometry to one O(2) and two equivalent O(3) atoms. The Se(1)-O(2) bond length is 1.76 Å. Both Se(1)-O(3) bond lengths are 1.74 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded to one Y(1), one Sn(2), and two equivalent Sn(1) atoms to form a mixture of corner and edge-sharing OYSn3 tetrahedra. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Y(1), one Sn(2), and one Se(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Y(1), one Sn(1), and one Se(1) atom.