SnHPO4 crystallizes in the monoclinic P2_1/c space group. Sn(1) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(4) atoms. P(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 linear geometry to one O(2) and one O(3) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Sn(1) and one P(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one P(1) and one H(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Sn(1), one P(1), and one H(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Sn(1) and one P(1) atom.
SnHPO4 crystallizes in the monoclinic P2_1/c space group. Sn(1) is bonded in a 5-coordinate geometry to one O(3), two equivalent O(1), and two equivalent O(4) atoms. The Sn(1)-O(3) bond length is 2.67 Å. There is one shorter (2.34 Å) and one longer (2.39 Å) Sn(1)-O(1) bond length. There is one shorter (2.20 Å) and one longer (2.64 Å) Sn(1)-O(4) bond length. P(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. The P(1)-O(1) bond length is 1.57 Å. The P(1)-O(2) bond length is 1.59 Å. The P(1)-O(3) bond length is 1.53 Å. The P(1)-O(4) bond length is 1.55 Å. H(1) is bonded in a linear geometry to one O(2) and one O(3) atom. The H(1)-O(2) bond length is 1.03 Å. The H(1)-O(3) bond length is 1.55 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Sn(1) and one P(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one P(1) and one H(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Sn(1), one P(1), and one H(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent Sn(1) and one P(1) atom.