Cr2FeO8Tl crystallizes in the orthorhombic Pnma space group. The structure consists of four 7440-28-0 atoms inside a Cr2FeO8 framework. In the Cr2FeO8 framework, there are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(5), and two equivalent O(6) atoms to form CrO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 30-41°. In the second Cr site, Cr(2) is bonded to one O(2), one O(3), and two equivalent O(4) atoms to form CrO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 17-36°. Fe(1) is bonded to one O(3), one O(5), two equivalent O(4), and two equivalent O(6) atoms to form FeO6 octahedra that share corners with three equivalent Cr(1)O4 tetrahedra and corners with three equivalent Cr(2)O4 tetrahedra. There are six inequivalent O sites. In the first O site, O(5) is bonded in a bent 150 degrees geometry to one Cr(1) and one Fe(1) atom. In the second O site, O(6) is bonded in a bent 150 degrees geometry to one Cr(1) and one Fe(1) atom. In the third O site, O(1) is bonded in a single-bond geometry to one Cr(1) atom. In the fourth O site, O(2) is bonded in a single-bond geometry to one Cr(2) atom. In the fifth O site, O(3) is bonded in a distorted linear geometry to one Cr(2) and one Fe(1) atom. In the sixth O site, O(4) is bonded in a bent 150 degrees geometry to one Cr(2) and one Fe(1) atom.
Cr2FeO8Tl crystallizes in the orthorhombic Pnma space group. The structure consists of four 7440-28-0 atoms inside a Cr2FeO8 framework. In the Cr2FeO8 framework, there are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(1), one O(5), and two equivalent O(6) atoms to form CrO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 30-41°. The Cr(1)-O(1) bond length is 1.61 Å. The Cr(1)-O(5) bond length is 1.69 Å. Both Cr(1)-O(6) bond lengths are 1.68 Å. In the second Cr site, Cr(2) is bonded to one O(2), one O(3), and two equivalent O(4) atoms to form CrO4 tetrahedra that share corners with three equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 17-36°. The Cr(2)-O(2) bond length is 1.63 Å. The Cr(2)-O(3) bond length is 1.66 Å. Both Cr(2)-O(4) bond lengths are 1.69 Å. Fe(1) is bonded to one O(3), one O(5), two equivalent O(4), and two equivalent O(6) atoms to form FeO6 octahedra that share corners with three equivalent Cr(1)O4 tetrahedra and corners with three equivalent Cr(2)O4 tetrahedra. The Fe(1)-O(3) bond length is 2.02 Å. The Fe(1)-O(5) bond length is 2.03 Å. Both Fe(1)-O(4) bond lengths are 2.01 Å. Both Fe(1)-O(6) bond lengths are 2.01 Å. There are six inequivalent O sites. In the first O site, O(5) is bonded in a bent 150 degrees geometry to one Cr(1) and one Fe(1) atom. In the second O site, O(6) is bonded in a bent 150 degrees geometry to one Cr(1) and one Fe(1) atom. In the third O site, O(1) is bonded in a single-bond geometry to one Cr(1) atom. In the fourth O site, O(2) is bonded in a single-bond geometry to one Cr(2) atom. In the fifth O site, O(3) is bonded in a distorted linear geometry to one Cr(2) and one Fe(1) atom. In the sixth O site, O(4) is bonded in a bent 150 degrees geometry to one Cr(2) and one Fe(1) atom.