Cu3(SeO3)2Cl2 crystallizes in the triclinic P-1 space group. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 5-coordinate geometry to one O(5), one O(6), two equivalent O(1), and one Cl(2) atom. In the second Cu site, Cu(2) is bonded in a 6-coordinate geometry to one O(4), one O(5), one O(6), two equivalent O(3), and one Cl(1) atom. In the third Cu site, Cu(3) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(2), one Cl(1), and one Cl(2) atom. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(4), and one O(5) atom. In the second Se site, Se(2) is bonded in a distorted trigonal non-coplanar geometry to one O(2), one O(3), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Cu(1) and one Se(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Cu(3) and one Se(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Cu(2) and one Se(2) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Cu(2), one Cu(3), and one Se(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(2), and one Se(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(2), and one Se(2) atom. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 1-coordinate geometry to one Cu(2) and one Cu(3) atom. In the second Cl site, Cl(2) is bonded in a distorted water-like geometry to one Cu(1) and one Cu(3) atom.
Cu3(SeO3)2Cl2 crystallizes in the triclinic P-1 space group. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a 5-coordinate geometry to one O(5), one O(6), two equivalent O(1), and one Cl(2) atom. The Cu(1)-O(5) bond length is 1.95 Å. The Cu(1)-O(6) bond length is 2.00 Å. There is one shorter (1.92 Å) and one longer (2.59 Å) Cu(1)-O(1) bond length. The Cu(1)-Cl(2) bond length is 2.21 Å. In the second Cu site, Cu(2) is bonded in a 6-coordinate geometry to one O(4), one O(5), one O(6), two equivalent O(3), and one Cl(1) atom. The Cu(2)-O(4) bond length is 2.02 Å. The Cu(2)-O(5) bond length is 2.09 Å. The Cu(2)-O(6) bond length is 1.94 Å. There is one shorter (1.94 Å) and one longer (2.50 Å) Cu(2)-O(3) bond length. The Cu(2)-Cl(1) bond length is 2.87 Å. In the third Cu site, Cu(3) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(2), one Cl(1), and one Cl(2) atom. The Cu(3)-O(4) bond length is 1.97 Å. Both Cu(3)-O(2) bond lengths are 1.99 Å. The Cu(3)-Cl(1) bond length is 2.26 Å. The Cu(3)-Cl(2) bond length is 2.88 Å. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded in a trigonal non-coplanar geometry to one O(1), one O(4), and one O(5) atom. The Se(1)-O(1) bond length is 1.74 Å. The Se(1)-O(4) bond length is 1.77 Å. The Se(1)-O(5) bond length is 1.76 Å. In the second Se site, Se(2) is bonded in a distorted trigonal non-coplanar geometry to one O(2), one O(3), and one O(6) atom. The Se(2)-O(2) bond length is 1.79 Å. The Se(2)-O(3) bond length is 1.73 Å. The Se(2)-O(6) bond length is 1.78 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Cu(1) and one Se(1) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to two equivalent Cu(3) and one Se(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Cu(2) and one Se(2) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Cu(2), one Cu(3), and one Se(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(2), and one Se(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(2), and one Se(2) atom. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 1-coordinate geometry to one Cu(2) and one Cu(3) atom. In the second Cl site, Cl(2) is bonded in a distorted water-like geometry to one Cu(1) and one Cu(3) atom.