YCoF5 crystallizes in the orthorhombic Immm space group. Y(1) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms to form YF6 octahedra that share corners with two equivalent Y(1)F6 octahedra and corners with six equivalent Co(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 0-59°. Co(1) is bonded to two equivalent F(2) and four F(1,1) atoms to form distorted CoF6 octahedra that share corners with six equivalent Y(1)F6 octahedra and edges with two equivalent Co(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 0-59°. There are four inequivalent F sites. In the first F site, F(1) is bonded in a trigonal planar geometry to one Y(1) and two equivalent Co(1) atoms. In the second F site, F(2) is bonded in a linear geometry to one Y(1) and one Co(1) atom. In the third F site, F(3) is bonded in a linear geometry to two equivalent Y(1) atoms. In the fourth F site, F(1) is bonded in a trigonal planar geometry to one Y(1) and two equivalent Co(1) atoms.
YCoF5 crystallizes in the orthorhombic Immm space group. Y(1) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms to form YF6 octahedra that share corners with two equivalent Y(1)F6 octahedra and corners with six equivalent Co(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 0-59°. Both Y(1)-F(1) bond lengths are 2.19 Å. Both Y(1)-F(2) bond lengths are 2.20 Å. Both Y(1)-F(3) bond lengths are 2.11 Å. Co(1) is bonded to two equivalent F(2) and four F(1,1) atoms to form distorted CoF6 octahedra that share corners with six equivalent Y(1)F6 octahedra and edges with two equivalent Co(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 0-59°. Both Co(1)-F(2) bond lengths are 1.89 Å. All Co(1)-F(1,1) bond lengths are 2.46 Å. There are four inequivalent F sites. In the first F site, F(1) is bonded in a trigonal planar geometry to one Y(1) and two equivalent Co(1) atoms. In the second F site, F(2) is bonded in a linear geometry to one Y(1) and one Co(1) atom. In the third F site, F(3) is bonded in a linear geometry to two equivalent Y(1) atoms. In the fourth F site, F(1) is bonded in a trigonal planar geometry to one Y(1) and two equivalent Co(1) atoms. The F(1)-Y(1) bond length is 2.19 Å.