Fe2CuAs2(HO5)2 crystallizes in the triclinic P-1 space group. Fe(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(4), and one O(5) atom. Cu(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. As(1) is bonded in a distorted trigonal bipyramidal geometry to one O(1), one O(2), one O(3), one O(4), and one O(5) atom. H(1) is bonded in a distorted linear geometry to one O(3) and one O(4) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Fe(1), one Cu(1), and one As(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Fe(1), one Cu(1), and one As(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Fe(1), one As(1), and one H(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Fe(1), one As(1), and one H(1) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Fe(1) and one As(1) atom.
Fe2CuAs2(HO5)2 crystallizes in the triclinic P-1 space group. Fe(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(3), one O(4), and one O(5) atom. The Fe(1)-O(1) bond length is 2.08 Å. The Fe(1)-O(2) bond length is 2.05 Å. The Fe(1)-O(3) bond length is 2.08 Å. The Fe(1)-O(4) bond length is 2.00 Å. The Fe(1)-O(5) bond length is 1.91 Å. Cu(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Cu(1)-O(1) bond lengths are 2.07 Å. Both Cu(1)-O(2) bond lengths are 1.90 Å. As(1) is bonded in a distorted trigonal bipyramidal geometry to one O(1), one O(2), one O(3), one O(4), and one O(5) atom. The As(1)-O(1) bond length is 1.76 Å. The As(1)-O(2) bond length is 1.84 Å. The As(1)-O(3) bond length is 1.97 Å. The As(1)-O(4) bond length is 1.82 Å. The As(1)-O(5) bond length is 1.75 Å. H(1) is bonded in a distorted linear geometry to one O(3) and one O(4) atom. The H(1)-O(3) bond length is 1.02 Å. The H(1)-O(4) bond length is 1.57 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Fe(1), one Cu(1), and one As(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Fe(1), one Cu(1), and one As(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to one Fe(1), one As(1), and one H(1) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Fe(1), one As(1), and one H(1) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Fe(1) and one As(1) atom.