Fe2PbAs2H2O10 crystallizes in the monoclinic C2/m space group. Fe(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form FeO6 octahedra that share corners with two equivalent Pb(1)O6 octahedra, corners with four equivalent As(1)O4 tetrahedra, and edges with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles are 66°. Pb(1) is bonded to two equivalent O(4) and four equivalent O(3) atoms to form PbO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra and corners with six equivalent As(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 66°. As(1) is bonded to one O(1), one O(4), and two equivalent O(3) atoms to form AsO4 tetrahedra that share corners with three equivalent Pb(1)O6 octahedra and corners with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-72°. H(1) is bonded in a single-bond geometry to one O(2) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Fe(1) and one As(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Fe(1) and one H(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Fe(1), one Pb(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Pb(1) and one As(1) atom.
Fe2PbAs2H2O10 crystallizes in the monoclinic C2/m space group. Fe(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form FeO6 octahedra that share corners with two equivalent Pb(1)O6 octahedra, corners with four equivalent As(1)O4 tetrahedra, and edges with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles are 66°. Both Fe(1)-O(1) bond lengths are 2.12 Å. Both Fe(1)-O(2) bond lengths are 1.98 Å. Both Fe(1)-O(3) bond lengths are 2.06 Å. Pb(1) is bonded to two equivalent O(4) and four equivalent O(3) atoms to form PbO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra and corners with six equivalent As(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 66°. Both Pb(1)-O(4) bond lengths are 2.61 Å. All Pb(1)-O(3) bond lengths are 2.62 Å. As(1) is bonded to one O(1), one O(4), and two equivalent O(3) atoms to form AsO4 tetrahedra that share corners with three equivalent Pb(1)O6 octahedra and corners with four equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-72°. The As(1)-O(1) bond length is 1.78 Å. The As(1)-O(4) bond length is 1.69 Å. Both As(1)-O(3) bond lengths are 1.73 Å. H(1) is bonded in a single-bond geometry to one O(2) atom. The H(1)-O(2) bond length is 0.99 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Fe(1) and one As(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Fe(1) and one H(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Fe(1), one Pb(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Pb(1) and one As(1) atom.