Sr5(VO4)3OH crystallizes in the hexagonal P6_3 space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to three equivalent O(1), three equivalent O(2), and three equivalent O(4) atoms. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to three equivalent O(1), three equivalent O(2), and three equivalent O(3) atoms. In the third Sr site, Sr(3) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(5), two equivalent O(3), and two equivalent O(4) atoms. V(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. H(1) is bonded in a single-bond geometry to one O(5) atom. There are five inequivalent O sites. In the first O site, O(4) is bonded in a 1-coordinate geometry to one Sr(1), two equivalent Sr(3), and one V(1) atom. In the second O site, O(5) is bonded in a single-bond geometry to three equivalent Sr(3) and one H(1) atom. In the third O site, O(1) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), and one V(1) atom. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), and one V(1) atom. In the fifth O site, O(3) is bonded in a 1-coordinate geometry to one Sr(2), two equivalent Sr(3), and one V(1) atom.
Sr5(VO4)3OH crystallizes in the hexagonal P6_3 space group. There are three inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to three equivalent O(1), three equivalent O(2), and three equivalent O(4) atoms. All Sr(1)-O(1) bond lengths are 2.63 Å. All Sr(1)-O(2) bond lengths are 2.59 Å. All Sr(1)-O(4) bond lengths are 3.05 Å. In the second Sr site, Sr(2) is bonded in a 9-coordinate geometry to three equivalent O(1), three equivalent O(2), and three equivalent O(3) atoms. All Sr(2)-O(1) bond lengths are 2.64 Å. All Sr(2)-O(2) bond lengths are 2.59 Å. All Sr(2)-O(3) bond lengths are 3.03 Å. In the third Sr site, Sr(3) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(5), two equivalent O(3), and two equivalent O(4) atoms. The Sr(3)-O(1) bond length is 2.53 Å. The Sr(3)-O(2) bond length is 2.88 Å. The Sr(3)-O(5) bond length is 2.58 Å. There is one shorter (2.53 Å) and one longer (2.67 Å) Sr(3)-O(3) bond length. There is one shorter (2.53 Å) and one longer (2.66 Å) Sr(3)-O(4) bond length. V(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. The V(1)-O(1) bond length is 1.75 Å. The V(1)-O(2) bond length is 1.75 Å. The V(1)-O(3) bond length is 1.73 Å. The V(1)-O(4) bond length is 1.74 Å. H(1) is bonded in a single-bond geometry to one O(5) atom. The H(1)-O(5) bond length is 0.98 Å. There are five inequivalent O sites. In the first O site, O(4) is bonded in a 1-coordinate geometry to one Sr(1), two equivalent Sr(3), and one V(1) atom. In the second O site, O(5) is bonded in a single-bond geometry to three equivalent Sr(3) and one H(1) atom. In the third O site, O(1) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), and one V(1) atom. In the fourth O site, O(2) is bonded in a 4-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), and one V(1) atom. In the fifth O site, O(3) is bonded in a 1-coordinate geometry to one Sr(2), two equivalent Sr(3), and one V(1) atom.