KNiCrF6 crystallizes in the orthorhombic Imma space group. K(1) is bonded to one F(1), one F(2), and four equivalent F(3) atoms to form KF6 octahedra that share corners with six equivalent Cr(1)F6 octahedra and corners with six equivalent Ni(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 67-69°. Cr(1) is bonded to two equivalent F(1) and four equivalent F(3) atoms to form CrF6 octahedra that share corners with two equivalent Cr(1)F6 octahedra, corners with four equivalent Ni(1)F6 octahedra, and corners with six equivalent K(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 43-69°. Ni(1) is bonded to two equivalent F(2) and four equivalent F(3) atoms to form NiF6 octahedra that share corners with two equivalent Ni(1)F6 octahedra, corners with four equivalent Cr(1)F6 octahedra, and corners with six equivalent K(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 44-69°. There are three inequivalent F sites. In the first F site, F(1) is bonded in a distorted bent 150 degrees geometry to one K(1) and two equivalent Cr(1) atoms. In the second F site, F(2) is bonded in a 3-coordinate geometry to one K(1) and two equivalent Ni(1) atoms. In the third F site, F(3) is bonded in a 2-coordinate geometry to one K(1), one Cr(1), and one Ni(1) atom.
KNiCrF6 crystallizes in the orthorhombic Imma space group. K(1) is bonded to one F(1), one F(2), and four equivalent F(3) atoms to form KF6 octahedra that share corners with six equivalent Cr(1)F6 octahedra and corners with six equivalent Ni(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 67-69°. The K(1)-F(1) bond length is 3.22 Å. The K(1)-F(2) bond length is 3.09 Å. All K(1)-F(3) bond lengths are 3.13 Å. Cr(1) is bonded to two equivalent F(1) and four equivalent F(3) atoms to form CrF6 octahedra that share corners with two equivalent Cr(1)F6 octahedra, corners with four equivalent Ni(1)F6 octahedra, and corners with six equivalent K(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 43-69°. Both Cr(1)-F(1) bond lengths are 1.97 Å. All Cr(1)-F(3) bond lengths are 1.93 Å. Ni(1) is bonded to two equivalent F(2) and four equivalent F(3) atoms to form NiF6 octahedra that share corners with two equivalent Ni(1)F6 octahedra, corners with four equivalent Cr(1)F6 octahedra, and corners with six equivalent K(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 44-69°. Both Ni(1)-F(2) bond lengths are 1.99 Å. All Ni(1)-F(3) bond lengths are 2.03 Å. There are three inequivalent F sites. In the first F site, F(1) is bonded in a distorted bent 150 degrees geometry to one K(1) and two equivalent Cr(1) atoms. In the second F site, F(2) is bonded in a 3-coordinate geometry to one K(1) and two equivalent Ni(1) atoms. In the third F site, F(3) is bonded in a 2-coordinate geometry to one K(1), one Cr(1), and one Ni(1) atom.