Pd2P2O7 crystallizes in the monoclinic C2/c space group. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(4) atoms. In the second Pd site, Pd(2) is bonded in a square co-planar geometry to two equivalent O(3) and two equivalent O(4) atoms. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form corner-sharing PO4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent P(1) atoms. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Pd(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Pd(2) and one P(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Pd(1), one Pd(2), and one P(1) atom.
Pd2P2O7 crystallizes in the monoclinic C2/c space group. There are two inequivalent Pd sites. In the first Pd site, Pd(1) is bonded in a square co-planar geometry to two equivalent O(2) and two equivalent O(4) atoms. Both Pd(1)-O(2) bond lengths are 2.00 Å. Both Pd(1)-O(4) bond lengths are 2.06 Å. In the second Pd site, Pd(2) is bonded in a square co-planar geometry to two equivalent O(3) and two equivalent O(4) atoms. Both Pd(2)-O(3) bond lengths are 2.01 Å. Both Pd(2)-O(4) bond lengths are 2.05 Å. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form corner-sharing PO4 tetrahedra. The P(1)-O(1) bond length is 1.60 Å. The P(1)-O(2) bond length is 1.50 Å. The P(1)-O(3) bond length is 1.51 Å. The P(1)-O(4) bond length is 1.57 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to two equivalent P(1) atoms. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Pd(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Pd(2) and one P(1) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Pd(1), one Pd(2), and one P(1) atom.