Cu3PbAs2H2O10 is Esseneite-derived structured and crystallizes in the monoclinic C2/c space group. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form distorted CuO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra, edges with two equivalent Cu(2)O6 octahedra, and edges with two equivalent Cu(3)O6 octahedra. In the second Cu site, Cu(2) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms to form CuO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra, edges with two equivalent Cu(1)O6 octahedra, and edges with two equivalent Cu(3)O6 octahedra. In the third Cu site, Cu(3) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form distorted CuO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra, edges with two equivalent Cu(1)O6 octahedra, and edges with two equivalent Cu(2)O6 octahedra. Pb(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. As(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form AsO4 tetrahedra that share corners with two equivalent Cu(1)O6 octahedra, corners with two equivalent Cu(2)O6 octahedra, and corners with two equivalent Cu(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-59°. H(1) is bonded in a distorted bent 150 degrees geometry to one O(1) and one O(2) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Cu(1), one Cu(2), one Cu(3), and one H(1) atom to form distorted corner-sharing OCu3H tetrahedra. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Pb(1), one As(1), and one H(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Cu(1), one Cu(3), one Pb(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Cu(1), one Cu(2), one Pb(1), and one As(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Cu(2), one Cu(3), one Pb(1), and one As(1) atom.
Cu3PbAs2H2O10 is Esseneite-derived structured and crystallizes in the monoclinic C2/c space group. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form distorted CuO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra, edges with two equivalent Cu(2)O6 octahedra, and edges with two equivalent Cu(3)O6 octahedra. Both Cu(1)-O(1) bond lengths are 1.95 Å. Both Cu(1)-O(3) bond lengths are 2.53 Å. Both Cu(1)-O(4) bond lengths are 2.01 Å. In the second Cu site, Cu(2) is bonded to two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms to form CuO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra, edges with two equivalent Cu(1)O6 octahedra, and edges with two equivalent Cu(3)O6 octahedra. Both Cu(2)-O(1) bond lengths are 1.92 Å. Both Cu(2)-O(4) bond lengths are 2.06 Å. Both Cu(2)-O(5) bond lengths are 2.35 Å. In the third Cu site, Cu(3) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms to form distorted CuO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra, edges with two equivalent Cu(1)O6 octahedra, and edges with two equivalent Cu(2)O6 octahedra. Both Cu(3)-O(1) bond lengths are 1.96 Å. Both Cu(3)-O(3) bond lengths are 2.53 Å. Both Cu(3)-O(5) bond lengths are 2.02 Å. Pb(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms. Both Pb(1)-O(2) bond lengths are 2.67 Å. Both Pb(1)-O(3) bond lengths are 2.67 Å. Both Pb(1)-O(4) bond lengths are 2.76 Å. Both Pb(1)-O(5) bond lengths are 2.82 Å. As(1) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form AsO4 tetrahedra that share corners with two equivalent Cu(1)O6 octahedra, corners with two equivalent Cu(2)O6 octahedra, and corners with two equivalent Cu(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-59°. The As(1)-O(2) bond length is 1.71 Å. The As(1)-O(3) bond length is 1.68 Å. The As(1)-O(4) bond length is 1.79 Å. The As(1)-O(5) bond length is 1.77 Å. H(1) is bonded in a distorted bent 150 degrees geometry to one O(1) and one O(2) atom. The H(1)-O(1) bond length is 1.04 Å. The H(1)-O(2) bond length is 1.52 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded to one Cu(1), one Cu(2), one Cu(3), and one H(1) atom to form distorted corner-sharing OCu3H tetrahedra. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Pb(1), one As(1), and one H(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Cu(1), one Cu(3), one Pb(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Cu(1), one Cu(2), one Pb(1), and one As(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Cu(2), one Cu(3), one Pb(1), and one As(1) atom.