MgCu4(HO)6Cl2 crystallizes in the triclinic P-1 space group. The structure consists of two hydrochloric acid atoms inside a MgCu4(HO)6 framework. In the MgCu4(HO)6 framework, Mg(1) is bonded in a 4-coordinate geometry to four equivalent O(1,2) atoms. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a linear geometry to two equivalent O(3) atoms. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to two equivalent O(1,2) and two equivalent O(3) atoms. In the third Cu site, Cu(3) is bonded in a square co-planar geometry to four equivalent O(1,2) atoms. In the fourth Cu site, Cu(4) is bonded in a square co-planar geometry to two equivalent O(1,2) and two equivalent O(3) atoms. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1,2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(3) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(1,2) atom. There are two inequivalent O sites. In the first O site, O(1,2) is bonded in a distorted single-bond geometry to one Mg(1), one Cu(2), one Cu(3), and one H(3) atom. In the second O site, O(3) is bonded to one Cu(1), one Cu(2), one Cu(4), and one H(2) atom to form distorted corner-sharing OCu3H tetrahedra.
MgCu4(HO)6Cl2 crystallizes in the triclinic P-1 space group. The structure consists of two hydrochloric acid atoms inside a MgCu4(HO)6 framework. In the MgCu4(HO)6 framework, Mg(1) is bonded in a 4-coordinate geometry to four equivalent O(1,2) atoms. There are two shorter (2.09 Å) and two longer (2.10 Å) Mg(1)-O(1,2) bond lengths. There are four inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a linear geometry to two equivalent O(3) atoms. Both Cu(1)-O(3) bond lengths are 1.86 Å. In the second Cu site, Cu(2) is bonded in a square co-planar geometry to two equivalent O(1,2) and two equivalent O(3) atoms. Both Cu(2)-O(1,2) bond lengths are 1.99 Å. Both Cu(2)-O(3) bond lengths are 2.06 Å. In the third Cu site, Cu(3) is bonded in a square co-planar geometry to four equivalent O(1,2) atoms. All Cu(3)-O(1,2) bond lengths are 2.07 Å. In the fourth Cu site, Cu(4) is bonded in a square co-planar geometry to two equivalent O(1,2) and two equivalent O(3) atoms. Both Cu(4)-O(1,2) bond lengths are 1.99 Å. Both Cu(4)-O(3) bond lengths are 2.06 Å. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1,2) atom. The H(1)-O(1,2) bond length is 0.99 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(3) atom. The H(2)-O(3) bond length is 1.00 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(1,2) atom. The H(3)-O(1,2) bond length is 0.99 Å. There are two inequivalent O sites. In the first O site, O(1,2) is bonded in a distorted single-bond geometry to one Mg(1), one Cu(2), one Cu(3), and one H(3) atom. In the second O site, O(3) is bonded to one Cu(1), one Cu(2), one Cu(4), and one H(2) atom to form distorted corner-sharing OCu3H tetrahedra.