BaPbP2O7 crystallizes in the orthorhombic Pnma space group. Ba(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(1), two equivalent O(4), and four equivalent O(5) atoms. Pb(1) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(1), and two equivalent O(5) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form corner-sharing PO4 tetrahedra. In the second P site, P(2) is bonded to one O(3), one O(4), and two equivalent O(5) atoms to form corner-sharing PO4 tetrahedra. There are five inequivalent O sites. In the first O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Ba(1), one Pb(1), and one P(2) atom. In the second O site, O(5) is bonded in a distorted single-bond geometry to two equivalent Ba(1), one Pb(1), and one P(2) atom. In the third O site, O(1) is bonded in a distorted single-bond geometry to one Ba(1), one Pb(1), and one P(1) atom. In the fourth O site, O(2) is bonded in a distorted single-bond geometry to one Ba(1) and one P(1) atom. In the fifth O site, O(3) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom.
BaPbP2O7 crystallizes in the orthorhombic Pnma space group. Ba(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(1), two equivalent O(4), and four equivalent O(5) atoms. The Ba(1)-O(2) bond length is 2.68 Å. Both Ba(1)-O(1) bond lengths are 2.73 Å. Both Ba(1)-O(4) bond lengths are 3.13 Å. There are two shorter (2.76 Å) and two longer (2.80 Å) Ba(1)-O(5) bond lengths. Pb(1) is bonded in a 5-coordinate geometry to one O(4), two equivalent O(1), and two equivalent O(5) atoms. The Pb(1)-O(4) bond length is 2.43 Å. Both Pb(1)-O(1) bond lengths are 2.68 Å. Both Pb(1)-O(5) bond lengths are 2.72 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form corner-sharing PO4 tetrahedra. The P(1)-O(2) bond length is 1.51 Å. The P(1)-O(3) bond length is 1.61 Å. Both P(1)-O(1) bond lengths are 1.52 Å. In the second P site, P(2) is bonded to one O(3), one O(4), and two equivalent O(5) atoms to form corner-sharing PO4 tetrahedra. The P(2)-O(3) bond length is 1.61 Å. The P(2)-O(4) bond length is 1.51 Å. Both P(2)-O(5) bond lengths are 1.52 Å. There are five inequivalent O sites. In the first O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Ba(1), one Pb(1), and one P(2) atom. In the second O site, O(5) is bonded in a distorted single-bond geometry to two equivalent Ba(1), one Pb(1), and one P(2) atom. In the third O site, O(1) is bonded in a distorted single-bond geometry to one Ba(1), one Pb(1), and one P(1) atom. In the fourth O site, O(2) is bonded in a distorted single-bond geometry to one Ba(1) and one P(1) atom. In the fifth O site, O(3) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom.