SrNiF6 crystallizes in the trigonal R-3m space group. Sr(1) is bonded to twelve equivalent F(1) atoms to form SrF12 cuboctahedra that share corners with six equivalent Ni(1)F6 octahedra, edges with six equivalent Sr(1)F12 cuboctahedra, and faces with two equivalent Ni(1)F6 octahedra. The corner-sharing octahedral tilt angles are 37°. Ni(1) is bonded to six equivalent F(1) atoms to form NiF6 octahedra that share corners with six equivalent Sr(1)F12 cuboctahedra and faces with two equivalent Sr(1)F12 cuboctahedra. F(1) is bonded in a distorted single-bond geometry to two equivalent Sr(1) and one Ni(1) atom.
SrNiF6 crystallizes in the trigonal R-3m space group. Sr(1) is bonded to twelve equivalent F(1) atoms to form SrF12 cuboctahedra that share corners with six equivalent Ni(1)F6 octahedra, edges with six equivalent Sr(1)F12 cuboctahedra, and faces with two equivalent Ni(1)F6 octahedra. The corner-sharing octahedral tilt angles are 37°. There are six shorter (2.64 Å) and six longer (2.68 Å) Sr(1)-F(1) bond lengths. Ni(1) is bonded to six equivalent F(1) atoms to form NiF6 octahedra that share corners with six equivalent Sr(1)F12 cuboctahedra and faces with two equivalent Sr(1)F12 cuboctahedra. All Ni(1)-F(1) bond lengths are 1.78 Å. F(1) is bonded in a distorted single-bond geometry to two equivalent Sr(1) and one Ni(1) atom.