PdPbSiP4O14 crystallizes in the monoclinic P2_1/m space group. Pd(1) is bonded in a square co-planar geometry to two equivalent O(3) and two equivalent O(4) atoms. Pb(1) is bonded in a 2-coordinate geometry to two equivalent O(7) atoms. Si(1) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms to form SiO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with four equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, 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  a cornercorner with one Si(1)O6 octahedra and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 43°. In the second P site, P(2) is bonded to one O(1), one O(5), one O(6), and one O(7) atom to form PO4 tetrahedra that share corners with two equivalent Si(1)O6 octahedra and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 36-42°. There are seven inequivalent O sites. In the first O site, O(6) is bonded in a bent 150 degrees geometry to one Si(1) and one P(2) atom. In the second O site, O(7) is bonded in a distorted single-bond geometry to one Pb(1) and one P(2) atom. In the third O site, O(1) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the fourth O site, O(2) is bonded in a bent 150 degrees geometry to one Si(1) and one P(1) atom. In the fifth O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Pd(1) and one P(1) atom. In the sixth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Pd(1) and one P(1) atom. In the seventh O site, O(5) is bonded in a bent 150 degrees geometry to one Si(1) and one P(2) atom.
PdPbSiP4O14 crystallizes in the monoclinic P2_1/m space group. Pd(1) is bonded in a square co-planar geometry to two equivalent O(3) and two equivalent O(4) atoms. Both Pd(1)-O(3) bond lengths are 2.04 Å. Both Pd(1)-O(4) bond lengths are 2.02 Å. Pb(1) is bonded in a 2-coordinate geometry to two equivalent O(7) atoms. Both Pb(1)-O(7) bond lengths are 2.53 Å. Si(1) is bonded to two equivalent O(2), two equivalent O(5), and two equivalent O(6) atoms to form SiO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra and corners with four equivalent P(2)O4 tetrahedra. Both Si(1)-O(2) bond lengths are 1.81 Å. Both Si(1)-O(5) bond lengths are 1.78 Å. Both Si(1)-O(6) bond lengths are 1.76 Å. There are two inequivalent P sites. In the first P site, 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  a cornercorner with one Si(1)O6 octahedra and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 43°. The P(1)-O(1) bond length is 1.60 Å. The P(1)-O(2) bond length is 1.53 Å. The P(1)-O(3) bond length is 1.54 Å. The P(1)-O(4) bond length is 1.54 Å. In the second P site, P(2) is bonded to one O(1), one O(5), one O(6), and one O(7) atom to form PO4 tetrahedra that share corners with two equivalent Si(1)O6 octahedra and  a cornercorner with one P(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 36-42°. The P(2)-O(1) bond length is 1.62 Å. The P(2)-O(5) bond length is 1.54 Å. The P(2)-O(6) bond length is 1.52 Å. The P(2)-O(7) bond length is 1.52 Å. There are seven inequivalent O sites. In the first O site, O(6) is bonded in a bent 150 degrees geometry to one Si(1) and one P(2) atom. In the second O site, O(7) is bonded in a distorted single-bond geometry to one Pb(1) and one P(2) atom. In the third O site, O(1) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the fourth O site, O(2) is bonded in a bent 150 degrees geometry to one Si(1) and one P(1) atom. In the fifth O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Pd(1) and one P(1) atom. In the sixth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Pd(1) and one P(1) atom. In the seventh O site, O(5) is bonded in a bent 150 degrees geometry to one Si(1) and one P(2) atom.