Y4O(OH)9NO3 crystallizes in the monoclinic P2_1 space group. The structure consists of two nitric acid molecules inside a Y4H9O10 framework. In the Y4H9O10 framework, there are four inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(1), one O(10), one O(2), two equivalent O(4), and two equivalent O(9) atoms to form distorted edge-sharing YO7 pentagonal bipyramids. In the second Y site, Y(2) is bonded in a 9-coordinate geometry to one O(7), one O(8), one O(9), two equivalent O(10), two equivalent O(5), and two equivalent O(6) atoms. In the third Y site, Y(3) is bonded to one O(1), one O(2), one O(6), two equivalent O(3), and two equivalent O(7) atoms to form distorted edge-sharing YO7 pentagonal bipyramids. In the fourth Y site, Y(4) is bonded in a 7-coordinate geometry to one O(3), one O(4), one O(5), two equivalent O(2), and two equivalent O(8) atoms. There are nine 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(3) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(4) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(5) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(6) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(7) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(8) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(9) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one O(10) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Y(1), one Y(3), and one H(1) atom. In the second O site, O(2) is bonded to one Y(1), one Y(3), and two equivalent Y(4) atoms to form corner-sharing OY4 tetrahedra. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Y(4), two equivalent Y(3), and one H(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Y(4), two equivalent Y(1), and one H(3) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Y(4), two equivalent Y(2), and one H(4) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Y(3), two equivalent Y(2), and one H(5) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Y(2), two equivalent Y(3), and one H(6) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one Y(2), two equivalent Y(4), and one H(7) atom. In the ninth O site, O(9) is bonded in a single-bond geometry to one Y(2), two equivalent Y(1), and one H(8) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one Y(1), two equivalent Y(2), and one H(9) atom.
Y4O(OH)9NO3 crystallizes in the monoclinic P2_1 space group. The structure consists of two nitric acid molecules inside a Y4H9O10 framework. In the Y4H9O10 framework, there are four inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(1), one O(10), one O(2), two equivalent O(4), and two equivalent O(9) atoms to form distorted edge-sharing YO7 pentagonal bipyramids. The Y(1)-O(1) bond length is 2.27 Å. The Y(1)-O(10) bond length is 2.37 Å. The Y(1)-O(2) bond length is 2.27 Å. There is one shorter (2.37 Å) and one longer (2.41 Å) Y(1)-O(4) bond length. There is one shorter (2.35 Å) and one longer (2.36 Å) Y(1)-O(9) bond length. In the second Y site, Y(2) is bonded in a 9-coordinate geometry to one O(7), one O(8), one O(9), two equivalent O(10), two equivalent O(5), and two equivalent O(6) atoms. The Y(2)-O(7) bond length is 2.51 Å. The Y(2)-O(8) bond length is 2.49 Å. The Y(2)-O(9) bond length is 2.54 Å. There is one shorter (2.41 Å) and one longer (2.42 Å) Y(2)-O(10) bond length. There is one shorter (2.48 Å) and one longer (2.53 Å) Y(2)-O(5) bond length. There is one shorter (2.45 Å) and one longer (2.47 Å) Y(2)-O(6) bond length. In the third Y site, Y(3) is bonded to one O(1), one O(2), one O(6), two equivalent O(3), and two equivalent O(7) atoms to form distorted edge-sharing YO7 pentagonal bipyramids. The Y(3)-O(1) bond length is 2.26 Å. The Y(3)-O(2) bond length is 2.29 Å. The Y(3)-O(6) bond length is 2.33 Å. Both Y(3)-O(3) bond lengths are 2.39 Å. There is one shorter (2.36 Å) and one longer (2.38 Å) Y(3)-O(7) bond length. In the fourth Y site, Y(4) is bonded in a 7-coordinate geometry to one O(3), one O(4), one O(5), two equivalent O(2), and two equivalent O(8) atoms. The Y(4)-O(3) bond length is 2.37 Å. The Y(4)-O(4) bond length is 2.43 Å. The Y(4)-O(5) bond length is 2.33 Å. There is one shorter (2.26 Å) and one longer (2.27 Å) Y(4)-O(2) bond length. There is one shorter (2.39 Å) and one longer (2.48 Å) Y(4)-O(8) bond length. There are nine 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 0.97 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 0.99 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(4) atom. The H(3)-O(4) bond length is 0.98 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(5) atom. The H(4)-O(5) bond length is 0.97 Å. In the fifth H site, H(5) is bonded in a single-bond geometry to one O(6) atom. The H(5)-O(6) bond length is 0.97 Å. In the sixth H site, H(6) is bonded in a single-bond geometry to one O(7) atom. The H(6)-O(7) bond length is 0.98 Å. In the seventh H site, H(7) is bonded in a single-bond geometry to one O(8) atom. The H(7)-O(8) bond length is 0.98 Å. In the eighth H site, H(8) is bonded in a single-bond geometry to one O(9) atom. The H(8)-O(9) bond length is 0.97 Å. In the ninth H site, H(9) is bonded in a single-bond geometry to one O(10) atom. The H(9)-O(10) bond length is 0.97 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Y(1), one Y(3), and one H(1) atom. In the second O site, O(2) is bonded to one Y(1), one Y(3), and two equivalent Y(4) atoms to form corner-sharing OY4 tetrahedra. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Y(4), two equivalent Y(3), and one H(2) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Y(4), two equivalent Y(1), and one H(3) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Y(4), two equivalent Y(2), and one H(4) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Y(3), two equivalent Y(2), and one H(5) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Y(2), two equivalent Y(3), and one H(6) atom. In the eighth O site, O(8) is bonded in a single-bond geometry to one Y(2), two equivalent Y(4), and one H(7) atom. In the ninth O site, O(9) is bonded in a single-bond geometry to one Y(2), two equivalent Y(1), and one H(8) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one Y(1), two equivalent Y(2), and one H(9) atom.