SrPb2O5Cl6 crystallizes in the monoclinic C2/c space group. Sr(1) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), four equivalent O(2), and two equivalent Cl(3) atoms. Pb(1) is bonded in a 8-coordinate geometry to one O(1), two equivalent Cl(1), two equivalent Cl(3), and three equivalent Cl(2) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Sr(1), one Pb(1), one Cl(1), and one Cl(3) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent Sr(1) atoms. In the third O site, O(3) is bonded in a single-bond geometry to one Sr(1) atom. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 3-coordinate geometry to two equivalent Pb(1) and one O(1) atom. In the second Cl site, Cl(2) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Pb(1) atoms. In the third Cl site, Cl(3) is bonded in a 4-coordinate geometry to one Sr(1), two equivalent Pb(1), and one O(1) atom.
SrPb2O5Cl6 crystallizes in the monoclinic C2/c space group. Sr(1) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), four equivalent O(2), and two equivalent Cl(3) atoms. The Sr(1)-O(3) bond length is 2.77 Å. Both Sr(1)-O(1) bond lengths are 2.81 Å. There are two shorter (2.53 Å) and two longer (2.57 Å) Sr(1)-O(2) bond lengths. Both Sr(1)-Cl(3) bond lengths are 3.40 Å. Pb(1) is bonded in a 8-coordinate geometry to one O(1), two equivalent Cl(1), two equivalent Cl(3), and three equivalent Cl(2) atoms. The Pb(1)-O(1) bond length is 2.60 Å. There is one shorter (2.92 Å) and one longer (2.99 Å) Pb(1)-Cl(1) bond length. There is one shorter (3.07 Å) and one longer (3.23 Å) Pb(1)-Cl(3) bond length. There are a spread of Pb(1)-Cl(2) bond distances ranging from 2.87-3.11 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one Sr(1), one Pb(1), one Cl(1), and one Cl(3) atom. The O(1)-Cl(1) bond length is 2.43 Å. The O(1)-Cl(3) bond length is 2.39 Å. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent Sr(1) atoms. In the third O site, O(3) is bonded in a single-bond geometry to one Sr(1) atom. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 3-coordinate geometry to two equivalent Pb(1) and one O(1) atom. In the second Cl site, Cl(2) is bonded in a distorted trigonal non-coplanar geometry to three equivalent Pb(1) atoms. In the third Cl site, Cl(3) is bonded in a 4-coordinate geometry to one Sr(1), two equivalent Pb(1), and one O(1) atom.