LiAlSiH2O5 crystallizes in the orthorhombic Pna2_1 space group. Li(1) is bonded in a trigonal planar geometry to one O(2), one O(3), and one O(4) atom. Al(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(4), and one O(5) atom. Si(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(4), and one O(5) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(3) atom. In the second H site, H(2) is bonded in a distorted single-bond geometry to one O(2) and one O(3) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted L-shaped geometry to one Al(1) and one Si(1) atom. In the second O site, O(2) is bonded in a distorted trigonal pyramidal geometry to one Li(1), one Al(1), one Si(1), and one H(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1), one H(1), and one H(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Al(1), and one Si(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Al(1) and one Si(1) atom.
LiAlSiH2O5 crystallizes in the orthorhombic Pna2_1 space group. Li(1) is bonded in a trigonal planar geometry to one O(2), one O(3), and one O(4) atom. The Li(1)-O(2) bond length is 1.95 Å. The Li(1)-O(3) bond length is 1.88 Å. The Li(1)-O(4) bond length is 1.92 Å. Al(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(4), and one O(5) atom. The Al(1)-O(1) bond length is 1.86 Å. The Al(1)-O(2) bond length is 1.87 Å. The Al(1)-O(4) bond length is 1.96 Å. The Al(1)-O(5) bond length is 1.70 Å. Si(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(4), and one O(5) atom. The Si(1)-O(1) bond length is 1.66 Å. The Si(1)-O(2) bond length is 1.75 Å. The Si(1)-O(4) bond length is 1.69 Å. The Si(1)-O(5) bond length is 1.60 Å. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(3) atom. The H(1)-O(3) bond length is 0.97 Å. In the second H site, H(2) is bonded in a distorted single-bond geometry to one O(2) and one O(3) atom. The H(2)-O(2) bond length is 1.65 Å. The H(2)-O(3) bond length is 1.01 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted L-shaped geometry to one Al(1) and one Si(1) atom. In the second O site, O(2) is bonded in a distorted trigonal pyramidal geometry to one Li(1), one Al(1), one Si(1), and one H(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Li(1), one H(1), and one H(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one Li(1), one Al(1), and one Si(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Al(1) and one Si(1) atom.