SrCu(OH)3Cl crystallizes in the orthorhombic Pmn2_1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one O(2), two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one O(4), one O(5), two equivalent O(3), one Cl(1), and two equivalent Cl(2) atoms. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(4) atoms. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(3), and one O(5) atom. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(2) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(3) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(4) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(5) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Sr(1), one Cu(1), one Cu(2), and one H(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Sr(1), two equivalent Cu(2), and one H(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Sr(2), one Cu(2), and one H(3) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), one Cu(1), and one H(4) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), one Cu(2), and one H(5) atom. There are two inequivalent Cl sites. In the first Cl site, Cl(2) is bonded in a 2-coordinate geometry to two equivalent Sr(2) atoms. In the second Cl site, Cl(1) is bonded in a 2-coordinate geometry to two equivalent Sr(2) atoms.
SrCu(OH)3Cl crystallizes in the orthorhombic Pmn2_1 space group. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one O(2), two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms. The Sr(1)-O(2) bond length is 2.67 Å. Both Sr(1)-O(1) bond lengths are 2.58 Å. Both Sr(1)-O(4) bond lengths are 2.53 Å. Both Sr(1)-O(5) bond lengths are 2.62 Å. In the second Sr site, Sr(2) is bonded in a 7-coordinate geometry to one O(4), one O(5), two equivalent O(3), one Cl(1), and two equivalent Cl(2) atoms. The Sr(2)-O(4) bond length is 2.52 Å. The Sr(2)-O(5) bond length is 2.66 Å. There is one shorter (2.53 Å) and one longer (2.59 Å) Sr(2)-O(3) bond length. The Sr(2)-Cl(1) bond length is 2.95 Å. There is one shorter (3.01 Å) and one longer (3.08 Å) Sr(2)-Cl(2) bond length. There are two inequivalent Cu sites. In the first Cu site, Cu(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(4) atoms. Both Cu(1)-O(1) bond lengths are 1.99 Å. Both Cu(1)-O(4) bond lengths are 1.97 Å. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(3), and one O(5) atom. The Cu(2)-O(1) bond length is 2.01 Å. The Cu(2)-O(2) bond length is 1.97 Å. The Cu(2)-O(3) bond length is 1.97 Å. The Cu(2)-O(5) bond length is 1.98 Å. There are five inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(1) atom. The H(1)-O(1) bond length is 0.98 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(2) atom. The H(2)-O(2) bond length is 0.98 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(3) atom. The H(3)-O(3) bond length is 0.98 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(4) atom. The H(4)-O(4) bond length is 0.98 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(5) atom. The H(5)-O(5) bond length is 0.98 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Sr(1), one Cu(1), one Cu(2), and one H(1) atom. In the second O site, O(2) is bonded in a distorted single-bond geometry to one Sr(1), two equivalent Cu(2), and one H(2) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to two equivalent Sr(2), one Cu(2), and one H(3) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), one Cu(1), and one H(4) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Sr(1), one Sr(2), one Cu(2), and one H(5) atom. There are two inequivalent Cl sites. In the first Cl site, Cl(2) is bonded in a 2-coordinate geometry to two equivalent Sr(2) atoms. In the second Cl site, Cl(1) is bonded in a 2-coordinate geometry to two equivalent Sr(2) atoms.