KGdTi4O12 crystallizes in the orthorhombic Amm2 space group. K(1) is bonded to two equivalent O(2), two equivalent O(3), four equivalent O(1), and four equivalent O(4) atoms to form distorted KO12 cuboctahedra that share corners with four equivalent K(1)O12 cuboctahedra and faces with eight equivalent Ti(1)O6 octahedra. Gd(1) is bonded in a 10-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(5), and four equivalent O(1) atoms. Ti(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form TiO6 octahedra that share corners with six equivalent Ti(1)O6 octahedra and faces with two equivalent K(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-22°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one K(1), one Gd(1), and two equivalent Ti(1) atoms. In the second O site, O(2) is bonded in a 2-coordinate geometry to one K(1), one Gd(1), and two equivalent Ti(1) atoms. In the third O site, O(3) is bonded in a distorted square co-planar geometry to one K(1), one Gd(1), and two equivalent Ti(1) atoms. In the fourth O site, O(4) is bonded in a distorted square co-planar geometry to two equivalent K(1) and two equivalent Ti(1) atoms. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Gd(1) and two equivalent Ti(1) atoms.
KGdTi4O12 crystallizes in the orthorhombic Amm2 space group. K(1) is bonded to two equivalent O(2), two equivalent O(3), four equivalent O(1), and four equivalent O(4) atoms to form distorted KO12 cuboctahedra that share corners with four equivalent K(1)O12 cuboctahedra and faces with eight equivalent Ti(1)O6 octahedra. Both K(1)-O(2) bond lengths are 3.11 Å. Both K(1)-O(3) bond lengths are 2.82 Å. All K(1)-O(1) bond lengths are 2.86 Å. There are two shorter (2.72 Å) and two longer (2.77 Å) K(1)-O(4) bond lengths. Gd(1) is bonded in a 10-coordinate geometry to two equivalent O(2), two equivalent O(3), two equivalent O(5), and four equivalent O(1) atoms. Both Gd(1)-O(2) bond lengths are 2.54 Å. Both Gd(1)-O(3) bond lengths are 2.53 Å. Both Gd(1)-O(5) bond lengths are 2.43 Å. All Gd(1)-O(1) bond lengths are 2.65 Å. Ti(1) is bonded to one O(2), one O(3), one O(4), one O(5), and two equivalent O(1) atoms to form TiO6 octahedra that share corners with six equivalent Ti(1)O6 octahedra and faces with two equivalent K(1)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 3-22°. The Ti(1)-O(2) bond length is 1.93 Å. The Ti(1)-O(3) bond length is 2.00 Å. The Ti(1)-O(4) bond length is 1.90 Å. The Ti(1)-O(5) bond length is 2.02 Å. There is one shorter (1.92 Å) and one longer (1.97 Å) Ti(1)-O(1) bond length. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one K(1), one Gd(1), and two equivalent Ti(1) atoms. In the second O site, O(2) is bonded in a 2-coordinate geometry to one K(1), one Gd(1), and two equivalent Ti(1) atoms. In the third O site, O(3) is bonded in a distorted square co-planar geometry to one K(1), one Gd(1), and two equivalent Ti(1) atoms. In the fourth O site, O(4) is bonded in a distorted square co-planar geometry to two equivalent K(1) and two equivalent Ti(1) atoms. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Gd(1) and two equivalent Ti(1) atoms.