SrMgF4 crystallizes in the orthorhombic Cmcm space group. Sr(1) is bonded in a 8-coordinate geometry to two equivalent F(3) and six equivalent F(2) atoms. Mg(1) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms to form corner-sharing MgF6 octahedra. The corner-sharing octahedral tilt angles range from 0-11°. There are three inequivalent F sites. In the first F site, F(1) is bonded in a linear geometry to two equivalent Mg(1) atoms. In the second F site, F(2) is bonded to three equivalent Sr(1) and one Mg(1) atom to form a mixture of corner and edge-sharing FSr3Mg tetrahedra. In the third F site, F(3) is bonded in a distorted linear geometry to two equivalent Sr(1) and two equivalent Mg(1) atoms.
SrMgF4 crystallizes in the orthorhombic Cmcm space group. Sr(1) is bonded in a 8-coordinate geometry to two equivalent F(3) and six equivalent F(2) atoms. Both Sr(1)-F(3) bond lengths are 2.98 Å. There are four shorter (2.49 Å) and two longer (2.58 Å) Sr(1)-F(2) bond lengths. Mg(1) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms to form corner-sharing MgF6 octahedra. The corner-sharing octahedral tilt angles range from 0-11°. Both Mg(1)-F(1) bond lengths are 1.93 Å. Both Mg(1)-F(2) bond lengths are 2.02 Å. Both Mg(1)-F(3) bond lengths are 2.05 Å. There are three inequivalent F sites. In the first F site, F(1) is bonded in a linear geometry to two equivalent Mg(1) atoms. In the second F site, F(2) is bonded to three equivalent Sr(1) and one Mg(1) atom to form a mixture of corner and edge-sharing FSr3Mg tetrahedra. In the third F site, F(3) is bonded in a distorted linear geometry to two equivalent Sr(1) and two equivalent Mg(1) atoms.