Pr(OH)3 crystallizes in the monoclinic Pm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms. In the second Pr site, Pr(2) is bonded in a 9-coordinate geometry to one O(4), one O(5), one O(6), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. There are six 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. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Pr(1), two equivalent Pr(2), and one H(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Pr(1), two equivalent Pr(2), and one H(2) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Pr(1), two equivalent Pr(2), and one H(3) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one Pr(2), two equivalent Pr(1), and one H(4) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one Pr(2), two equivalent Pr(1), and one H(5) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one Pr(2), two equivalent Pr(1), and one H(6) atom.
Pr(OH)3 crystallizes in the monoclinic Pm space group. There are two inequivalent Pr sites. In the first Pr site, Pr(1) is bonded in a 9-coordinate geometry to one O(1), one O(2), one O(3), two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms. The Pr(1)-O(1) bond length is 2.62 Å. The Pr(1)-O(2) bond length is 2.60 Å. The Pr(1)-O(3) bond length is 2.59 Å. Both Pr(1)-O(4) bond lengths are 2.54 Å. Both Pr(1)-O(5) bond lengths are 2.54 Å. Both Pr(1)-O(6) bond lengths are 2.55 Å. In the second Pr site, Pr(2) is bonded in a 9-coordinate geometry to one O(4), one O(5), one O(6), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. The Pr(2)-O(4) bond length is 2.66 Å. The Pr(2)-O(5) bond length is 2.57 Å. The Pr(2)-O(6) bond length is 2.58 Å. Both Pr(2)-O(1) bond lengths are 2.54 Å. Both Pr(2)-O(2) bond lengths are 2.53 Å. Both Pr(2)-O(3) bond lengths are 2.54 Å. There are six 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 0.97 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 0.97 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 0.97 Å. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(6) atom. The H(6)-O(6) bond length is 0.97 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Pr(1), two equivalent Pr(2), and one H(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Pr(1), two equivalent Pr(2), and one H(2) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Pr(1), two equivalent Pr(2), and one H(3) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one Pr(2), two equivalent Pr(1), and one H(4) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one Pr(2), two equivalent Pr(1), and one H(5) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one Pr(2), two equivalent Pr(1), and one H(6) atom.