SrCaI4 is Rutile-derived structured and crystallizes in the orthorhombic Imma space group. Sr(1) is bonded to two equivalent I(2) and four equivalent I(1) atoms to form SrI6 octahedra that share corners with eight equivalent Ca(1)I6 octahedra and edges with two equivalent Sr(1)I6 octahedra. The corner-sharing octahedral tilt angles range from 43-56°. Ca(1) is bonded to two equivalent I(1) and four equivalent I(2) atoms to form CaI6 octahedra that share corners with eight equivalent Sr(1)I6 octahedra and edges with two equivalent Ca(1)I6 octahedra. The corner-sharing octahedral tilt angles range from 43-56°. There are two inequivalent I sites. In the first I site, I(1) is bonded in a distorted trigonal planar geometry to two equivalent Sr(1) and one Ca(1) atom. In the second I site, I(2) is bonded in a distorted trigonal planar geometry to one Sr(1) and two equivalent Ca(1) atoms.
SrCaI4 is Rutile-derived structured and crystallizes in the orthorhombic Imma space group. Sr(1) is bonded to two equivalent I(2) and four equivalent I(1) atoms to form SrI6 octahedra that share corners with eight equivalent Ca(1)I6 octahedra and edges with two equivalent Sr(1)I6 octahedra. The corner-sharing octahedral tilt angles range from 43-56°. Both Sr(1)-I(2) bond lengths are 3.34 Å. All Sr(1)-I(1) bond lengths are 3.28 Å. Ca(1) is bonded to two equivalent I(1) and four equivalent I(2) atoms to form CaI6 octahedra that share corners with eight equivalent Sr(1)I6 octahedra and edges with two equivalent Ca(1)I6 octahedra. The corner-sharing octahedral tilt angles range from 43-56°. Both Ca(1)-I(1) bond lengths are 3.18 Å. There are two shorter (3.17 Å) and two longer (3.18 Å) Ca(1)-I(2) bond lengths. There are two inequivalent I sites. In the first I site, I(1) is bonded in a distorted trigonal planar geometry to two equivalent Sr(1) and one Ca(1) atom. In the second I site, I(2) is bonded in a distorted trigonal planar geometry to one Sr(1) and two equivalent Ca(1) atoms.