KMnF3 is (Cubic) Perovskite structured and crystallizes in the tetragonal I4/mcm space group. K(1) is bonded to four equivalent F(2) and eight equivalent F(1) atoms to form KF12 cuboctahedra that share corners with twelve equivalent K(1)F12 cuboctahedra, faces with six equivalent K(1)F12 cuboctahedra, and faces with eight equivalent Mn(1)F6 octahedra. Mn(1) is bonded to two equivalent F(2) and four equivalent F(1) atoms to form MnF6 octahedra that share corners with six equivalent Mn(1)F6 octahedra and faces with eight equivalent K(1)F12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-5°. There are two inequivalent F sites. In the first F site, F(1) is bonded in a distorted linear geometry to four equivalent K(1) and two equivalent Mn(1) atoms. In the second F site, F(2) is bonded in a distorted linear geometry to four equivalent K(1) and two equivalent Mn(1) atoms.
KMnF3 is (Cubic) Perovskite structured and crystallizes in the tetragonal I4/mcm space group. K(1) is bonded to four equivalent F(2) and eight equivalent F(1) atoms to form KF12 cuboctahedra that share corners with twelve equivalent K(1)F12 cuboctahedra, faces with six equivalent K(1)F12 cuboctahedra, and faces with eight equivalent Mn(1)F6 octahedra. All K(1)-F(2) bond lengths are 2.95 Å. There are four shorter (2.90 Å) and four longer (3.02 Å) K(1)-F(1) bond lengths. Mn(1) is bonded to two equivalent F(2) and four equivalent F(1) atoms to form MnF6 octahedra that share corners with six equivalent Mn(1)F6 octahedra and faces with eight equivalent K(1)F12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-5°. Both Mn(1)-F(2) bond lengths are 2.09 Å. All Mn(1)-F(1) bond lengths are 2.09 Å. There are two inequivalent F sites. In the first F site, F(1) is bonded in a distorted linear geometry to four equivalent K(1) and two equivalent Mn(1) atoms. In the second F site, F(2) is bonded in a distorted linear geometry to four equivalent K(1) and two equivalent Mn(1) atoms.