Materials Data on Sr2GaCuSO3 by Materials Project
Sr2CuGaO3S crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. there are two inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a 8-coordinate geometry to four equivalent S2- and four equivalent O2- atoms. All Sr–S bond lengths are 3.13 Å. All Sr–O bond lengths are 2.55 Å. In the second Sr2+ site, Sr2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Sr–O bond distances ranging from 2.47–2.79 Å. Cu1+ is bonded to four equivalent S2- atoms to form a mixture of edge and corner-sharing CuS4 tetrahedra. All Cu–S bond lengths are 2.41 Å. Ga3+ is bonded to five O2- atoms to form corner-sharing GaO5 square pyramids. There is one shorter (1.90 Å) and four longer (1.99 Å) Ga–O bond length. S2- is bonded in a 8-coordinate geometry to four equivalent Sr2+ and four equivalent Cu1+ atoms. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to five equivalent Sr2+ and one Ga3+ atom to form a mixture of distorted edge and corner-sharing OSr5Ga octahedra. The corner-sharing octahedral tilt angles are 12°. In the second O2- site, O2- is bonded in a 6-coordinate geometry to four Sr2+ and two equivalent Ga3+ atoms.