LiAu(S2O7)2 crystallizes in the triclinic P-1 space group. Li(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form LiO6 octahedra that share corners with two equivalent S(2)O4 tetrahedra and corners with four equivalent S(1)O4 tetrahedra. Au(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(1), one O(3), one O(4), and one O(6) atom to form SO4 tetrahedra that share corners with two equivalent Li(1)O6 octahedra and  a cornercorner with one S(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 6-42°. In the second S site, S(2) is bonded to one O(2), one O(5), one O(6), and one O(7) atom to form SO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra and  a cornercorner with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Au(1) and one S(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Au(1) and one S(2) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Li(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a linear geometry to one Li(1) and one S(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Li(1) and one S(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one S(1) and one S(2) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one S(2) atom.
LiAu(S2O7)2 crystallizes in the triclinic P-1 space group. Li(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form LiO6 octahedra that share corners with two equivalent S(2)O4 tetrahedra and corners with four equivalent S(1)O4 tetrahedra. Both Li(1)-O(3) bond lengths are 2.26 Å. Both Li(1)-O(4) bond lengths are 2.20 Å. Both Li(1)-O(5) bond lengths are 2.11 Å. Au(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Au(1)-O(1) bond lengths are 2.03 Å. Both Au(1)-O(2) bond lengths are 2.03 Å. There are two inequivalent S sites. In the first S site, S(1) is bonded to one O(1), one O(3), one O(4), and one O(6) atom to form SO4 tetrahedra that share corners with two equivalent Li(1)O6 octahedra and  a cornercorner with one S(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 6-42°. The S(1)-O(1) bond length is 1.54 Å. The S(1)-O(3) bond length is 1.44 Å. The S(1)-O(4) bond length is 1.43 Å. The S(1)-O(6) bond length is 1.64 Å. In the second S site, S(2) is bonded to one O(2), one O(5), one O(6), and one O(7) atom to form SO4 tetrahedra that share  a cornercorner with one Li(1)O6 octahedra and  a cornercorner with one S(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 39°. The S(2)-O(2) bond length is 1.54 Å. The S(2)-O(5) bond length is 1.43 Å. The S(2)-O(6) bond length is 1.68 Å. The S(2)-O(7) bond length is 1.43 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Au(1) and one S(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Au(1) and one S(2) atom. In the third O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Li(1) and one S(1) atom. In the fourth O site, O(4) is bonded in a linear geometry to one Li(1) and one S(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Li(1) and one S(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one S(1) and one S(2) atom. In the seventh O site, O(7) is bonded in a single-bond geometry to one S(2) atom.