HgP2(PdO4)2 crystallizes in the orthorhombic Fddd space group. Pd(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Hg(1) is bonded in a distorted square co-planar geometry to four equivalent O(2) atoms. P(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Pd(1) and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Pd(1), one Hg(1), and one P(1) atom.
HgP2(PdO4)2 crystallizes in the orthorhombic Fddd space group. Pd(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Pd(1)-O(1) bond lengths are 2.06 Å. Both Pd(1)-O(2) bond lengths are 2.05 Å. Hg(1) is bonded in a distorted square co-planar geometry to four equivalent O(2) atoms. All Hg(1)-O(2) bond lengths are 2.38 Å. P(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. Both P(1)-O(1) bond lengths are 1.55 Å. Both P(1)-O(2) bond lengths are 1.57 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Pd(1) and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Pd(1), one Hg(1), and one P(1) atom.