Materials Data on Sr5(Sb11O19)2 by Materials Project
Sr5Sb22O38 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded to eight O2- atoms to form distorted edge-sharing SrO8 hexagonal bipyramids. There are a spread of Sr–O bond distances ranging from 2.54–2.87 Å. In the second Sr2+ site, Sr2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Sr–O bond distances ranging from 2.50–3.15 Å. In the third Sr2+ site, Sr2+ is bonded to eight O2- atoms to form distorted edge-sharing SrO8 hexagonal bipyramids. There are a spread of Sr–O bond distances ranging from 2.53–2.80 Å. There are eleven inequivalent Sb3+ sites. In the first Sb3+ site, Sb3+ is bonded in a distorted square co-planar geometry to four O2- atoms. There are a spread of Sb–O bond distances ranging from 1.97–2.23 Å. In the second Sb3+ site, Sb3+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Sb–O bond distances ranging from 2.04–2.29 Å. In the third Sb3+ site, Sb3+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Sb–O bond distances ranging from 2.00–2.20 Å. In the fourth Sb3+ site, Sb3+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Sb–O bond distances ranging from 1.97–2.69 Å. In the fifth Sb3+ site, Sb3+ is bonded in a distorted rectangular see-saw-like geometry to four O2- atoms. There are a spread of Sb–O bond distances ranging from 1.98–2.33 Å. In the sixth Sb3+ site, Sb3+ is bonded in a distorted T-shaped geometry to three O2- atoms. There are a spread of Sb–O bond distances ranging from 1.96–2.02 Å. In the seventh Sb3+ site, Sb3+ is bonded in a distorted T-shaped geometry to three O2- atoms. There are a spread of Sb–O bond distances ranging from 1.95–2.07 Å. In the eighth Sb3+ site, Sb3+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Sb–O bond distances ranging from 2.00–2.47 Å. In the ninth Sb3+ site, Sb3+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Sb–O bond distances ranging from 1.95–2.41 Å. In the tenth Sb3+ site, Sb3+ is bonded in a 5-coordinate geometry to four O2- atoms. There are a spread of Sb–O bond distances ranging from 2.01–2.26 Å. In the eleventh Sb3+ site, Sb3+ is bonded in a distorted T-shaped geometry to three O2- atoms. There are a spread of Sb–O bond distances ranging from 1.97–2.01 Å. There are nineteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two Sr2+ and two Sb3+ atoms. In the second O2- site, O2- is bonded in a 4-coordinate geometry to two Sr2+ and two Sb3+ atoms. In the third O2- site, O2- is bonded in a 3-coordinate geometry to three Sb3+ atoms. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to two Sr2+ and two Sb3+ atoms. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to two Sr2+ and one Sb3+ atom. In the sixth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Sr2+ and two Sb3+ atoms. In the seventh O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Sr2+ and two Sb3+ atoms. In the eighth O2- site, O2- is bonded in a distorted trigonal planar geometry to three Sb3+ atoms. In the ninth O2- site, O2- is bonded to three Sr2+ and one Sb3+ atom to form corner-sharing OSr3Sb tetrahedra. In the tenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Sr2+ and two Sb3+ atoms. In the eleventh O2- site, O2- is bonded in a 3-coordinate geometry to three Sb3+ atoms. In the twelfth O2- site, O2- is bonded in a 2-coordinate geometry to three Sb3+ atoms. In the thirteenth O2- site, O2- is bonded in a 4-coordinate geometry to two Sr2+ and two Sb3+ atoms. In the fourteenth O2- site, O2- is bonded in a trigonal planar geometry to one Sr2+ and two Sb3+ atoms. In the fifteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to three Sb3+ atoms. In the sixteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Sr2+ and two Sb3+ atoms. In the seventeenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Sb3+ atoms. In the eighteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Sr2+ and two Sb3+ atoms. In the nineteenth O2- site, O2- is bonded in a distorted linear geometry to one Sr2+ and two Sb3+ atoms.