SrPb2O7I6 crystallizes in the tetragonal I4_1/amd space group. Sr(1) is bonded in an octahedral geometry to two equivalent O(1) and four equivalent O(2) atoms. Pb(1) is bonded in a linear geometry to two equivalent I(1) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to one Sr(1) and one I(1) atom. In the second O site, O(2) is bonded in a T-shaped geometry to one Sr(1) and two equivalent I(2) atoms. In the third O site, O(3) is bonded in a linear geometry to two equivalent I(1) atoms. There are two inequivalent I sites. In the first I site, I(1) is bonded in a 4-coordinate geometry to two equivalent Pb(1), one O(1), and one O(3) atom. In the second I site, I(2) is bonded in a water-like geometry to two equivalent O(2) atoms.
SrPb2O7I6 crystallizes in the tetragonal I4_1/amd space group. Sr(1) is bonded in an octahedral geometry to two equivalent O(1) and four equivalent O(2) atoms. Both Sr(1)-O(1) bond lengths are 2.42 Å. All Sr(1)-O(2) bond lengths are 2.47 Å. Pb(1) is bonded in a linear geometry to two equivalent I(1) atoms. Both Pb(1)-I(1) bond lengths are 2.94 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to one Sr(1) and one I(1) atom. The O(1)-I(1) bond length is 1.89 Å. In the second O site, O(2) is bonded in a T-shaped geometry to one Sr(1) and two equivalent I(2) atoms. Both O(2)-I(2) bond lengths are 2.31 Å. In the third O site, O(3) is bonded in a linear geometry to two equivalent I(1) atoms. Both O(3)-I(1) bond lengths are 2.39 Å. There are two inequivalent I sites. In the first I site, I(1) is bonded in a 4-coordinate geometry to two equivalent Pb(1), one O(1), and one O(3) atom. In the second I site, I(2) is bonded in a water-like geometry to two equivalent O(2) atoms.