GdY(FeO3)2 crystallizes in the orthorhombic Pmc2_1 space group. Gd(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(4), and four equivalent O(2) atoms. Y(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. Fe(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 35-38°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Gd(1), two equivalent Y(1), and two equivalent Fe(1) atoms. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Gd(1), one Y(1), and two equivalent Fe(1) atoms. In the third O site, O(3) is bonded to two equivalent Y(1) and two equivalent Fe(1) atoms to form distorted OY2Fe2 trigonal pyramids that share corners with two equivalent O(4)Gd2Fe2 trigonal pyramids and corners with two equivalent O(3)Y2Fe2 trigonal pyramids. In the fourth O site, O(4) is bonded to two equivalent Gd(1) and two equivalent Fe(1) atoms to form distorted OGd2Fe2 trigonal pyramids that share corners with two equivalent O(4)Gd2Fe2 trigonal pyramids and corners with two equivalent O(3)Y2Fe2 trigonal pyramids.
GdY(FeO3)2 crystallizes in the orthorhombic Pmc2_1 space group. Gd(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(4), and four equivalent O(2) atoms. Both Gd(1)-O(1) bond lengths are 2.76 Å. There is one shorter (2.28 Å) and one longer (2.35 Å) Gd(1)-O(4) bond length. There are two shorter (2.31 Å) and two longer (2.56 Å) Gd(1)-O(2) bond lengths. Y(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. Both Y(1)-O(2) bond lengths are 2.73 Å. There is one shorter (2.25 Å) and one longer (2.32 Å) Y(1)-O(3) bond length. There are two shorter (2.30 Å) and two longer (2.53 Å) Y(1)-O(1) bond lengths. Fe(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(2) atoms to form corner-sharing FeO6 octahedra. The corner-sharing octahedral tilt angles range from 35-38°. The Fe(1)-O(3) bond length is 2.04 Å. The Fe(1)-O(4) bond length is 2.05 Å. There is one shorter (2.04 Å) and one longer (2.06 Å) Fe(1)-O(1) bond length. There is one shorter (2.03 Å) and one longer (2.06 Å) Fe(1)-O(2) bond length. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Gd(1), two equivalent Y(1), and two equivalent Fe(1) atoms. In the second O site, O(2) is bonded in a 5-coordinate geometry to two equivalent Gd(1), one Y(1), and two equivalent Fe(1) atoms. In the third O site, O(3) is bonded to two equivalent Y(1) and two equivalent Fe(1) atoms to form distorted OY2Fe2 trigonal pyramids that share corners with two equivalent O(4)Gd2Fe2 trigonal pyramids and corners with two equivalent O(3)Y2Fe2 trigonal pyramids. In the fourth O site, O(4) is bonded to two equivalent Gd(1) and two equivalent Fe(1) atoms to form distorted OGd2Fe2 trigonal pyramids that share corners with two equivalent O(4)Gd2Fe2 trigonal pyramids and corners with two equivalent O(3)Y2Fe2 trigonal pyramids.