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Materials Data on Gd3NbS3O4 by Materials Project

Gd3NbS3O4 crystallizes in the orthorhombic Pna2_1 space group. The structure is three-dimensional. there are three inequivalent Gd3+ sites. In the first Gd3+ site, Gd3+ is bonded in a 7-coordinate geometry to four S2- and four O2- atoms. There are a spread of Gd–S bond distances ranging from 2.77–3.14 Å. There are a spread of Gd–O bond distances ranging from 2.27–2.47 Å. In the second Gd3+ site, Gd3+ is bonded in a 3-coordinate geometry to five S2- and three O2- atoms. There are a spread of Gd–S bond distances ranging from 2.87–2.95 Å. There are a spread of Gd–O bond distances ranging from 2.34–2.45 Å. In the third Gd3+ site, Gd3+ is bonded in a 3-coordinate geometry to five S2- and three O2- atoms. There are a spread of Gd–S bond distances ranging from 2.86–3.04 Å. There are a spread of Gd–O bond distances ranging from 2.32–2.46 Å. Nb5+ is bonded in a 4-coordinate geometry to two S2- and four O2- atoms. There are one shorter (2.60 Å) and one longer (2.71 Å) Nb–S bond lengths. There are a spread of Nb–O bond distances ranging from 1.93–2.13 Å. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in a 5-coordinate geometry to six Gd3+ atoms. In the second S2- site, S2- is bonded in a 5-coordinate geometry to four Gd3+ and one Nb5+ atom. In the third S2- site, S2- is bonded in a 5-coordinate geometry to four Gd3+ and one Nb5+ atom. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to two Gd3+ and one Nb5+ atom. In the second O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to two Gd3+ and one Nb5+ atom. In the third O2- site, O2- is bonded in a tetrahedral geometry to three Gd3+ and one Nb5+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to three Gd3+ and one Nb5+ atom.

36 MATERIALS SCIENCE↗

Materials Data on Gd2Nb2S7O30 by Materials Project

Gd2Nb2S7O30 crystallizes in the tetragonal P-42_1m space group. The structure is three-dimensional. Gd is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of Gd–O bond distances ranging from 2.33–2.49 Å. Nb is bonded to six O atoms to form NbO6 octahedra that share corners with five SO4 tetrahedra. There are a spread of Nb–O bond distances ranging from 1.78–2.18 Å. There are three inequivalent S sites. In the first S site, S is bonded to four O atoms to form SO4 tetrahedra that share corners with two equivalent NbO6 octahedra. The corner-sharing octahedral tilt angles are 17°. There is two shorter (1.48 Å) and two longer (1.49 Å) S–O bond length. In the second S site, S is bonded to four O atoms to form SO4 tetrahedra that share corners with two equivalent NbO6 octahedra. The corner-sharing octahedral tilt angles are 31°. There are a spread of S–O bond distances ranging from 1.45–1.51 Å. In the third S site, S is bonded to four O atoms to form SO4 tetrahedra that share a cornercorner with one NbO6 octahedra. The corner-sharing octahedral tilt angles are 31°. There are a spread of S–O bond distances ranging from 1.46–1.54 Å. There are ten inequivalent O sites. In the first O site, O is bonded in a distorted linear geometry to one Gd and one S atom. In the second O site, O is bonded in a single-bond geometry to one S atom. In the third O site, O is bonded in a distorted linear geometry to one Gd and one S atom. In the fourth O site, O is bonded in a bent 150 degrees geometry to one Gd and one S atom. In the fifth O site, O is bonded in a bent 150 degrees geometry to one Nb and one S atom. In the sixth O site, O is bonded in a bent 150 degrees geometry to one Nb and one S atom. In the seventh O site, O is bonded in a distorted bent 150 degrees geometry to one Gd and one S atom. In the eighth O site, O is bonded in a distorted linear geometry to one Gd and one Nb atom. In the ninth O site, O is bonded in a distorted bent 150 degrees geometry to one Gd and one S atom. In the tenth O site, O is bonded in a distorted linear geometry to one Nb and one S atom.

36 MATERIALS SCIENCE↗