SrCaCrF7 crystallizes in the orthorhombic Pnma space group. Sr(1) is bonded in a 8-coordinate geometry to one F(2), one F(4), two equivalent F(1), two equivalent F(3), and two equivalent F(5) atoms. Ca(1) is bonded to one F(2), two equivalent F(3), two equivalent F(4), and two equivalent F(5) atoms to form CaF7 pentagonal bipyramids that share corners with three equivalent Cr(1)F6 octahedra, corners with two equivalent Ca(1)F7 pentagonal bipyramids, and  an edgeedge with one Cr(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 33-50°. Cr(1) is bonded to one F(1), one F(2), two equivalent F(3), and two equivalent F(5) atoms to form CrF6 octahedra that share corners with three equivalent Ca(1)F7 pentagonal bipyramids and  an edgeedge with one Ca(1)F7 pentagonal bipyramid. There are five inequivalent F sites. In the first F site, F(5) is bonded in a 3-coordinate geometry to one Sr(1), one Ca(1), and one Cr(1) atom. In the second F site, F(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Sr(1) and one Cr(1) atom. In the third F site, F(2) is bonded in a distorted trigonal planar geometry to one Sr(1), one Ca(1), and one Cr(1) atom. In the fourth F site, F(3) is bonded in a distorted trigonal planar geometry to one Sr(1), one Ca(1), and one Cr(1) atom. In the fifth F site, F(4) is bonded in a distorted trigonal planar geometry to one Sr(1) and two equivalent Ca(1) atoms.
SrCaCrF7 crystallizes in the orthorhombic Pnma space group. Sr(1) is bonded in a 8-coordinate geometry to one F(2), one F(4), two equivalent F(1), two equivalent F(3), and two equivalent F(5) atoms. The Sr(1)-F(2) bond length is 2.51 Å. The Sr(1)-F(4) bond length is 2.54 Å. There is one shorter (2.43 Å) and one longer (3.05 Å) Sr(1)-F(1) bond length. Both Sr(1)-F(3) bond lengths are 2.46 Å. Both Sr(1)-F(5) bond lengths are 2.58 Å. Ca(1) is bonded to one F(2), two equivalent F(3), two equivalent F(4), and two equivalent F(5) atoms to form CaF7 pentagonal bipyramids that share corners with three equivalent Cr(1)F6 octahedra, corners with two equivalent Ca(1)F7 pentagonal bipyramids, and  an edgeedge with one Cr(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 33-50°. The Ca(1)-F(2) bond length is 2.32 Å. Both Ca(1)-F(3) bond lengths are 2.40 Å. There is one shorter (2.29 Å) and one longer (2.30 Å) Ca(1)-F(4) bond length. Both Ca(1)-F(5) bond lengths are 2.41 Å. Cr(1) is bonded to one F(1), one F(2), two equivalent F(3), and two equivalent F(5) atoms to form CrF6 octahedra that share corners with three equivalent Ca(1)F7 pentagonal bipyramids and  an edgeedge with one Ca(1)F7 pentagonal bipyramid. The Cr(1)-F(1) bond length is 1.91 Å. The Cr(1)-F(2) bond length is 1.95 Å. Both Cr(1)-F(3) bond lengths are 1.95 Å. Both Cr(1)-F(5) bond lengths are 1.96 Å. There are five inequivalent F sites. In the first F site, F(5) is bonded in a 3-coordinate geometry to one Sr(1), one Ca(1), and one Cr(1) atom. In the second F site, F(1) is bonded in a distorted bent 150 degrees geometry to two equivalent Sr(1) and one Cr(1) atom. In the third F site, F(2) is bonded in a distorted trigonal planar geometry to one Sr(1), one Ca(1), and one Cr(1) atom. In the fourth F site, F(3) is bonded in a distorted trigonal planar geometry to one Sr(1), one Ca(1), and one Cr(1) atom. In the fifth F site, F(4) is bonded in a distorted trigonal planar geometry to one Sr(1) and two equivalent Ca(1) atoms.