Li2PdP2O7 crystallizes in the orthorhombic Imma space group. Li(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form distorted LiO4 trigonal pyramids that share corners with four equivalent P(1)O4 tetrahedra and corners with two equivalent Li(1)O4 trigonal pyramids. Pd(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. P(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form PO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra and corners with four equivalent Li(1)O4 trigonal pyramids. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(1), one Pd(1), and one P(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent P(1) atoms. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to two equivalent Li(1) and one P(1) atom.
Li2PdP2O7 crystallizes in the orthorhombic Imma space group. Li(1) is bonded to two equivalent O(1) and two equivalent O(3) atoms to form distorted LiO4 trigonal pyramids that share corners with four equivalent P(1)O4 tetrahedra and corners with two equivalent Li(1)O4 trigonal pyramids. Both Li(1)-O(1) bond lengths are 2.03 Å. Both Li(1)-O(3) bond lengths are 2.03 Å. Pd(1) is bonded in a square co-planar geometry to four equivalent O(1) atoms. All Pd(1)-O(1) bond lengths are 2.04 Å. P(1) is bonded to one O(2), one O(3), and two equivalent O(1) atoms to form PO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra and corners with four equivalent Li(1)O4 trigonal pyramids. The P(1)-O(2) bond length is 1.62 Å. The P(1)-O(3) bond length is 1.51 Å. Both P(1)-O(1) bond lengths are 1.56 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Li(1), one Pd(1), and one P(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to two equivalent P(1) atoms. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to two equivalent Li(1) and one P(1) atom.