Materials Data on SrLa4Cr5O15 by Materials Project
SrLa4Cr5O15 is (Cubic) Perovskite-derived structured and crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Sr2+ is bonded to twelve O2- atoms to form SrO12 cuboctahedra that share corners with two equivalent SrO12 cuboctahedra, corners with ten LaO12 cuboctahedra, faces with six LaO12 cuboctahedra, and faces with eight CrO6 octahedra. There are two shorter (2.77 Å) and ten longer (2.83 Å) Sr–O bond lengths. There are two inequivalent La3+ sites. In the first La3+ site, La3+ is bonded to twelve O2- atoms to form LaO12 cuboctahedra that share corners with two equivalent SrO12 cuboctahedra, corners with ten LaO12 cuboctahedra, faces with two equivalent SrO12 cuboctahedra, faces with four LaO12 cuboctahedra, and faces with eight CrO6 octahedra. There are a spread of La–O bond distances ranging from 2.70–2.79 Å. In the second La3+ site, La3+ is bonded to twelve O2- atoms to form LaO12 cuboctahedra that share corners with three equivalent SrO12 cuboctahedra, corners with nine LaO12 cuboctahedra, a faceface with one SrO12 cuboctahedra, faces with five LaO12 cuboctahedra, and faces with eight CrO6 octahedra. There are a spread of La–O bond distances ranging from 2.71–2.79 Å. There are three inequivalent Cr+3.20+ sites. In the first Cr+3.20+ site, Cr+3.20+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six CrO6 octahedra, faces with two equivalent SrO12 cuboctahedra, and faces with six LaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–4°. There is one shorter (1.95 Å) and five longer (1.96 Å) Cr–O bond length. In the second Cr+3.20+ site, Cr+3.20+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six CrO6 octahedra, faces with two equivalent SrO12 cuboctahedra, and faces with six LaO12 cuboctahedra. The corner-sharing octahedral tilt angles are 4°. All Cr–O bond lengths are 1.96 Å. In the third Cr+3.20+ site, Cr+3.20+ is bonded to six O2- atoms to form CrO6 octahedra that share corners with six CrO6 octahedra, a faceface with one SrO12 cuboctahedra, and faces with seven LaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–4°. There is two shorter (1.95 Å) and four longer (1.96 Å) Cr–O bond length. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted linear geometry to one Sr2+, three La3+, and two Cr+3.20+ atoms. In the second O2- site, O2- is bonded in a distorted linear geometry to one Sr2+, three La3+, and two Cr+3.20+ atoms. In the third O2- site, O2- is bonded in a distorted linear geometry to four La3+ and two equivalent Cr+3.20+ atoms. In the fourth O2- site, O2- is bonded in a distorted linear geometry to four La3+ and two Cr+3.20+ atoms. In the fifth O2- site, O2- is bonded in a distorted linear geometry to one Sr2+, three La3+, and two Cr+3.20+ atoms. In the sixth O2- site, O2- is bonded in a distorted linear geometry to two equivalent Sr2+, two equivalent La3+, and two equivalent Cr+3.20+ atoms.