Li2In(PO4)2 crystallizes in the monoclinic P2_1/c space group. Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), and two equivalent O(3) atoms. In(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form InO6 octahedra that share corners with six equivalent P(1)O4 tetrahedra. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with three equivalent In(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 28-57°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(1), one In(1), and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Li(1), one In(1), and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Li(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Li(1), one In(1), and one P(1) atom.
Li2In(PO4)2 crystallizes in the monoclinic P2_1/c space group. Li(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), and two equivalent O(3) atoms. The Li(1)-O(1) bond length is 2.03 Å. The Li(1)-O(2) bond length is 2.03 Å. The Li(1)-O(4) bond length is 2.05 Å. There is one shorter (1.94 Å) and one longer (2.32 Å) Li(1)-O(3) bond length. In(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form InO6 octahedra that share corners with six equivalent P(1)O4 tetrahedra. Both In(1)-O(1) bond lengths are 2.18 Å. Both In(1)-O(2) bond lengths are 2.20 Å. Both In(1)-O(4) bond lengths are 2.18 Å. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with three equivalent In(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 28-57°. The P(1)-O(1) bond length is 1.54 Å. The P(1)-O(2) bond length is 1.55 Å. The P(1)-O(3) bond length is 1.55 Å. The P(1)-O(4) 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 one Li(1), one In(1), and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Li(1), one In(1), and one P(1) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to two equivalent Li(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Li(1), one In(1), and one P(1) atom.