Materials Data on Sr3LaNb3O12 by Materials Project
Sr3LaNb3O12 crystallizes in the trigonal R3 space group. The structure is three-dimensional. there are three inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are three shorter (2.57 Å) and three longer (2.60 Å) Sr–O bond lengths. In the second Sr2+ site, Sr2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are three shorter (2.54 Å) and three longer (2.63 Å) Sr–O bond lengths. In the third Sr2+ site, Sr2+ is bonded in a 12-coordinate geometry to twelve O2- atoms. There are a spread of Sr–O bond distances ranging from 2.58–3.18 Å. La3+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of La–O bond distances ranging from 2.48–2.91 Å. There are three inequivalent Nb5+ sites. In the first Nb5+ site, Nb5+ is bonded to six O2- atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles are 22°. There are three shorter (1.90 Å) and three longer (2.18 Å) Nb–O bond lengths. In the second Nb5+ site, Nb5+ is bonded to six O2- atoms to form distorted corner-sharing NbO6 octahedra. The corner-sharing octahedral tilt angles are 20°. There are three shorter (1.89 Å) and three longer (2.22 Å) Nb–O bond lengths. In the third Nb5+ site, Nb5+ is bonded to six O2- atoms to form corner-sharing NbO6 octahedra. The corner-sharing octahedra tilt angles range from 20–22°. There are three shorter (1.98 Å) and three longer (2.06 Å) Nb–O bond lengths. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two Sr2+, one La3+, and one Nb5+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to three Sr2+ and one Nb5+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Sr2+, one La3+, and two Nb5+ atoms. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to one Sr2+, one La3+, and two Nb5+ atoms.