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DOE OSTI2020

Materials Data on Pr2Mo15O28 by Materials Project

Pr2Mo15O28 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are two inequivalent Pr3+ sites. In the first Pr3+ site, Pr3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pr–O bond distances ranging from 2.35–2.98 Å. In the second Pr3+ site, Pr3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Pr–O bond distances ranging from 2.28–2.60 Å. There are fifteen inequivalent Mo+3.33+ sites. In the first Mo+3.33+ site, Mo+3.33+ is bonded to five O2- atoms to form MoO5 square pyramids that share corners with five MoO5 square pyramids, a cornercorner with one MoO5 trigonal bipyramid, and edges with two MoO6 octahedra. There are a spread of Mo–O bond distances ranging from 2.08–2.16 Å. In the second Mo+3.33+ site, Mo+3.33+ is bonded to five O2- atoms to form MoO5 square pyramids that share a cornercorner with one MoO6 octahedra, corners with six MoO5 square pyramids, and an edgeedge with one MoO6 octahedra. The corner-sharing octahedral tilt angles are 52°. There are a spread of Mo–O bond distances ranging from 1.98–2.09 Å. In the third Mo+3.33+ site, Mo+3.33+ is bonded to five O2- atoms to form MoO5 square pyramids that share corners with six MoO5 square pyramids and an edgeedge with one MoO6 octahedra. There are a spread of Mo–O bond distances ranging from 1.98–2.16 Å. In the fourth Mo+3.33+ site, Mo+3.33+ is bonded to five O2- atoms to form MoO5 square pyramids that share corners with two MoO6 octahedra, corners with six MoO5 square pyramids, and an edgeedge with one MoO6 octahedra. The corner-sharing octahedra tilt angles range from 23–53°. There are a spread of Mo–O bond distances ranging from 2.11–2.22 Å. In the fifth Mo+3.33+ site, Mo+3.33+ is bonded to five O2- atoms to form MoO5 square pyramids that share a cornercorner with one MoO6 octahedra, corners with six MoO5 square pyramids, and an edgeedge with one MoO6 octahedra. The corner-sharing octahedral tilt angles are 52°. There are a spread of Mo–O bond distances ranging from 2.09–2.20 Å. In the sixth Mo+3.33+ site, Mo+3.33+ is bonded to five O2- atoms to form MoO5 square pyramids that share corners with two MoO6 octahedra, corners with five MoO5 square pyramids, and a cornercorner with one MoO5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 21–57°. There are a spread of Mo–O bond distances ranging from 1.98–2.09 Å. In the seventh Mo+3.33+ site, Mo+3.33+ is bonded to six O2- atoms to form a mixture of corner and edge-sharing MoO6 octahedra. There are a spread of Mo–O bond distances ranging from 2.12–2.21 Å. In the eighth Mo+3.33+ site, Mo+3.33+ is bonded to five O2- atoms to form MoO5 square pyramids that share a cornercorner with one MoO6 octahedra, corners with five MoO5 square pyramids, a cornercorner with one MoO5 trigonal bipyramid, and an edgeedge with one MoO6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are a spread of Mo–O bond distances ranging from 1.99–2.17 Å. In the ninth Mo+3.33+ site, Mo+3.33+ is bonded to five O2- atoms to form MoO5 square pyramids that share a cornercorner with one MoO6 octahedra, corners with five MoO5 square pyramids, a cornercorner with one MoO5 trigonal bipyramid, and an edgeedge with one MoO6 octahedra. The corner-sharing octahedral tilt angles are 59°. There are a spread of Mo–O bond distances ranging from 2.00–2.13 Å. In the tenth Mo+3.33+ site, Mo+3.33+ is bonded to five O2- atoms to form MoO5 square pyramids that share a cornercorner with one MoO6 octahedra, corners with five MoO5 square pyramids, a cornercorner with one MoO5 trigonal bipyramid, and an edgeedge with one MoO6 octahedra. The corner-sharing octahedral tilt angles are 51°. There are a spread of Mo–O bond distances ranging from 1.93–2.14 Å. In the eleventh Mo+3.33+ site, Mo+3.33+ is bonded to six O2- atoms to form MoO6 octahedra that share a cornercorner with one MoO6 octahedra, corners with three MoO5 square pyramids, a cornercorner with one MoO5 trigonal bipyramid, and edges with four MoO5 square pyramids. The corner-sharing octahedral tilt angles are 15°. There are a spread of Mo–O bond distances ranging from 2.13–2.22 Å. In the twelfth Mo+3.33+ site, Mo+3.33+ is bonded to five O2- atoms to form distorted MoO5 trigonal bipyramids that share a cornercorner with one MoO6 octahedra and corners with six MoO5 square pyramids. The corner-sharing octahedral tilt angles are 58°. There are a spread of Mo–O bond distances ranging from 1.79–2.08 Å. In the thirteenth Mo+3.33+ site, Mo+3.33+ is bonded to five O2- atoms to form MoO5 square pyramids that share a cornercorner with one MoO6 octahedra, corners with six MoO5 square pyramids, and edges with two MoO6 octahedra. The corner-sharing octahedral tilt angles are 54°. There are one shorter (2.08 Å) and four longer (2.15 Å) Mo–O bond lengths. In the fourteenth Mo+3.33+ site, Mo+3.33+ is bonded to five O2- atoms to form MoO5 square pyramids that share a cornercorner with one MoO6 octahedra, corners with five MoO5 square pyramids, a cornercorner with one MoO5 trigonal bipyramid, and an edgeedge with one MoO6 octahedra. The corner-sharing octahedral tilt angles are 19°. There are a spread of Mo–O bond distances ranging from 1.95–2.24 Å. In the fifteenth Mo+3.33+ site, Mo+3.33+ is bonded to six O2- atoms to form MoO6 octahedra that share a cornercorner with one MoO6 octahedra, corners with four MoO5 square pyramids, and edges with four MoO5 square pyramids. The corner-sharing octahedral tilt angles are 15°. There are a spread of Mo–O bond distances ranging from 2.11–2.24 Å. There are twenty-eight inequivalent O2- sites. In the first O2- site, O2- is bonded to one Pr3+ and three Mo+3.33+ atoms to form a mixture of distorted corner and edge-sharing OPrMo3 trigonal pyramids. In the second O2- site, O2- is bonded in a water-like geometry to two Mo+3.33+ atoms. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to three Mo+3.33+ atoms. In the fourth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Pr3+ and two Mo+3.33+ atoms. In the fifth O2- site, O2- is bonded to one Pr3+ and three Mo+3.33+ atoms to form a mixture of distorted corner and edge-sharing OPrMo3 trigonal pyramids. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to three Mo+3.33+ atoms. In the seventh O2- site, O2- is bonded in a 4-coordinate geometry to one Pr3+ and three Mo+3.33+ atoms. In the eighth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Mo+3.33+ atoms. In the ninth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Pr3+ and two Mo+3.33+ atoms. In the tenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Pr3+ and two Mo+3.33+ atoms. In the eleventh O2- site, O2- is bonded to one Pr3+ and three Mo+3.33+ atoms to form a mixture of distorted corner and edge-sharing OPrMo3 trigonal pyramids. In the twelfth O2- site, O2- is bonded in a distorted trigonal planar geometry to three Mo+3.33+ atoms. In the thirteenth O2- site, O2- is bonded in a distorted T-shaped geometry to three Mo+3.33+ atoms. In the fourteenth O2- site, O2- is bonded in a distorted T-shaped geometry to three Mo+3.33+ atoms. In the fifteenth O2- site, O2- is bonded to one Pr3+ and three Mo+3.33+ atoms to form a mixture of corner and edge-sharing OPrMo3 trigonal pyramids. In the sixteenth O2- site, O2- is bonded in a trigonal planar geometry to three Mo+3.33+ atoms. In the seventeenth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three Mo+3.33+ atoms. In the eighteenth O2- site, O2- is bonded in a 3-coordinate geometry to three Mo+3.33+ atoms. In the nineteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to three Mo+3.33+ atoms. In the twentieth O2- site, O2- is bonded in a trigonal planar geometry to three Mo+3.33+ atoms. In the twenty-first O2- site, O2- is bonded in a distorted trigonal planar geometry to three Mo+3.33+ atoms. In the twenty-second O2- site, O2- is bonded to one Pr3+ and three Mo+3.33+ atoms to form distorted corner-sharing OPrMo3 trigonal pyramids. In the twenty-third O2- site, O2- is bonded in a see-saw-like geometry to four Mo+3.33+ atoms. In the twenty-fourth O2- site, O2- is bonded in a trigonal planar geometry to one Pr3+ and two Mo+3.33+ atoms. In the twenty-fifth O2- site, O2- is bonded in a 3-coordinate geometry to one Pr3+ and three Mo+3.33+ atoms. In the twenty-sixth O2- site, O2- is bonded in a bent 120 degrees geometry to two Mo+3.33+ atoms. In the twenty-seventh O2- site, O2- is bonded in a distorted T-shaped geometry to three Mo+3.33+ atoms. In the twenty-eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Mo+3.33+ atoms.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Pr(MoO2)6 by Materials Project

Pr(MoO2)6 crystallizes in the tetragonal I4/m space group. The structure is three-dimensional. Pr3+ is bonded in a distorted square co-planar geometry to four equivalent O2- atoms. All Pr–O bond lengths are 2.45 Å. There are two inequivalent Mo+3.50+ sites. In the first Mo+3.50+ site, Mo+3.50+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing MoO6 octahedra. The corner-sharing octahedra tilt angles range from 49–57°. There are a spread of Mo–O bond distances ranging from 2.06–2.23 Å. In the second Mo+3.50+ site, Mo+3.50+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing MoO6 octahedra. The corner-sharing octahedra tilt angles range from 49–52°. There are a spread of Mo–O bond distances ranging from 1.95–2.23 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a rectangular see-saw-like geometry to one Pr3+ and three Mo+3.50+ atoms. In the second O2- site, O2- is bonded in a trigonal planar geometry to three Mo+3.50+ atoms. In the third O2- site, O2- is bonded in a distorted T-shaped geometry to three Mo+3.50+ atoms. In the fourth O2- site, O2- is bonded in a trigonal planar geometry to three Mo+3.50+ atoms.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Pr16(Mo3O8)7 by Materials Project

Pr16(Mo3O8)7 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are eight inequivalent Pr sites. In the first Pr site, Pr is bonded in a 9-coordinate geometry to seven O atoms. There are a spread of Pr–O bond distances ranging from 2.36–2.73 Å. In the second Pr site, Pr is bonded in a 9-coordinate geometry to nine O atoms. There are a spread of Pr–O bond distances ranging from 2.38–3.03 Å. In the third Pr site, Pr is bonded in a 5-coordinate geometry to six O atoms. There are a spread of Pr–O bond distances ranging from 2.42–3.04 Å. In the fourth Pr site, Pr is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of Pr–O bond distances ranging from 2.39–2.86 Å. In the fifth Pr site, Pr is bonded in a 4-coordinate geometry to six O atoms. There are a spread of Pr–O bond distances ranging from 2.30–2.76 Å. In the sixth Pr site, Pr is bonded in a 8-coordinate geometry to eight O atoms. There are a spread of Pr–O bond distances ranging from 2.29–3.08 Å. In the seventh Pr site, Pr is bonded in a 9-coordinate geometry to nine O atoms. There are a spread of Pr–O bond distances ranging from 2.34–3.23 Å. In the eighth Pr site, Pr is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of Pr–O bond distances ranging from 2.35–2.70 Å. There are eleven inequivalent Mo sites. In the first Mo site, Mo is bonded to five O atoms to form MoO5 square pyramids that share a cornercorner with one MoO6 octahedra and corners with three MoO5 square pyramids. The corner-sharing octahedral tilt angles are 42°. There are a spread of Mo–O bond distances ranging from 2.00–2.15 Å. In the second Mo site, Mo is bonded to five O atoms to form MoO5 square pyramids that share a cornercorner with one MoO6 octahedra and corners with three MoO5 square pyramids. The corner-sharing octahedral tilt angles are 38°. There are a spread of Mo–O bond distances ranging from 2.00–2.13 Å. In the third Mo site, Mo is bonded to five O atoms to form a mixture of corner and edge-sharing MoO5 square pyramids. There are a spread of Mo–O bond distances ranging from 2.07–2.19 Å. In the fourth Mo site, Mo is bonded to five O atoms to form a mixture of corner and edge-sharing MoO5 square pyramids. There are a spread of Mo–O bond distances ranging from 1.99–2.14 Å. In the fifth Mo site, Mo is bonded in a rectangular see-saw-like geometry to four O atoms. There are a spread of Mo–O bond distances ranging from 2.06–2.15 Å. In the sixth Mo site, Mo is bonded to five O atoms to form corner-sharing MoO5 square pyramids. There are a spread of Mo–O bond distances ranging from 1.98–2.15 Å. In the seventh Mo site, Mo is bonded to five O atoms to form MoO5 square pyramids that share a cornercorner with one MoO6 octahedra and corners with three MoO5 square pyramids. The corner-sharing octahedral tilt angles are 41°. There are a spread of Mo–O bond distances ranging from 2.11–2.16 Å. In the eighth Mo site, Mo is bonded to five O atoms to form a mixture of corner and edge-sharing MoO5 square pyramids. There are a spread of Mo–O bond distances ranging from 2.06–2.15 Å. In the ninth Mo site, Mo is bonded to five O atoms to form a mixture of corner and edge-sharing MoO5 square pyramids. There are a spread of Mo–O bond distances ranging from 2.02–2.16 Å. In the tenth Mo site, Mo is bonded in a rectangular see-saw-like geometry to four O atoms. There are a spread of Mo–O bond distances ranging from 2.08–2.20 Å. In the eleventh Mo site, Mo is bonded to six O atoms to form corner-sharing MoO6 octahedra. There are a spread of Mo–O bond distances ranging from 2.06–2.11 Å. There are twenty-eight inequivalent O sites. In the first O site, O is bonded to two Pr and two Mo atoms to form OPr2Mo2 trigonal pyramids that share corners with five OPr3Mo tetrahedra, corners with two equivalent OPr2Mo3 trigonal bipyramids, a cornercorner with one OPr2Mo2 trigonal pyramid, an edgeedge with one OPr3Mo tetrahedra, and an edgeedge with one OPr2Mo2 trigonal pyramid. In the second O site, O is bonded to two Pr and two Mo atoms to form OPr2Mo2 trigonal pyramids that share corners with five OPr3Mo tetrahedra, a cornercorner with one OPr2Mo3 trigonal bipyramid, a cornercorner with one OPr2Mo2 trigonal pyramid, and an edgeedge with one OPr2Mo2 trigonal pyramid. In the third O site, O is bonded in a 2-coordinate geometry to one Pr and two Mo atoms. In the fourth O site, O is bonded in a 5-coordinate geometry to four Pr and one Mo atom. In the fifth O site, O is bonded in a 4-coordinate geometry to two Pr and two Mo atoms. In the sixth O site, O is bonded to two Pr and two Mo atoms to form distorted OPr2Mo2 trigonal pyramids that share corners with five OPr3Mo tetrahedra, a cornercorner with one OPr2Mo2 trigonal pyramid, an edgeedge with one OPr2Mo2 tetrahedra, an edgeedge with one OPr2Mo3 trigonal bipyramid, and an edgeedge with one OPr2Mo2 trigonal pyramid. In the seventh O site, O is bonded to two Pr and two Mo atoms to form OPr2Mo2 trigonal pyramids that share corners with five OPr4 tetrahedra, a cornercorner with one OPr2Mo2 trigonal pyramid, an edgeedge with one OPr2Mo3 trigonal bipyramid, and an edgeedge with one OPr2Mo2 trigonal pyramid. In the eighth O site, O is bonded to two Pr and two Mo atoms to form a mixture of distorted corner and edge-sharing OPr2Mo2 tetrahedra. In the ninth O site, O is bonded in a 4-coordinate geometry to one Pr and three Mo atoms. In the tenth O site, O is bonded to two Pr and three Mo atoms to form distorted OPr2Mo3 trigonal bipyramids that share corners with two OPr2Mo2 tetrahedra, corners with three OPr2Mo2 trigonal pyramids, edges with three OPr3Mo tetrahedra, and edges with two OPr2Mo2 trigonal pyramids. In the eleventh O site, O is bonded to three Pr and one Mo atom to form distorted OPr3Mo tetrahedra that share corners with four OPr4 tetrahedra, corners with four OPr2Mo2 trigonal pyramids, edges with two OPr3Mo tetrahedra, and an edgeedge with one OPr2Mo3 trigonal bipyramid. In the twelfth O site, O is bonded to three Pr and one Mo atom to form OPr3Mo tetrahedra that share corners with five OPr4 tetrahedra, a cornercorner with one OPr2Mo2 trigonal pyramid, an edgeedge with one OPr3Mo tetrahedra, an edgeedge with one OPr2Mo3 trigonal bipyramid, and an edgeedge with one OPr2Mo2 trigonal pyramid. In the thirteenth O site, O is bonded to four Pr atoms to form distorted OPr4 tetrahedra that share corners with eight OPr3Mo tetrahedra, corners with five OPr2Mo2 trigonal pyramids, and an edgeedge with one OPr2Mo3 trigonal bipyramid. In the fourteenth O site, O is bonded to four Pr atoms to form OPr4 tetrahedra that share corners with nine OPr3Mo tetrahedra and corners with three OPr2Mo2 trigonal pyramids. In the fifteenth O site, O is bonded in a distorted L-shaped geometry to one Pr and two Mo atoms. In the sixteenth O site, O is bonded to two Pr and two Mo atoms to form distorted OPr2Mo2 tetrahedra that share corners with four OPr4 tetrahedra, a cornercorner with one OPr2Mo2 trigonal pyramid, and edges with two OPr2Mo2 tetrahedra. In the seventeenth O site, O is bonded to two Pr and two Mo atoms to form distorted OPr2Mo2 tetrahedra that share corners with four OPr4 tetrahedra, a cornercorner with one OPr2Mo3 trigonal bipyramid, corners with two OPr2Mo2 trigonal pyramids, and an edgeedge with one OPr2Mo2 tetrahedra. In the eighteenth O site, O is bonded in a distorted T-shaped geometry to one Pr and two Mo atoms. In the nineteenth O site, O is bonded in a 4-coordinate geometry to two Pr and two Mo atoms. In the twentieth O site, O is bonded to two Pr and two Mo atoms to form distorted corner-sharing OPr2Mo2 tetrahedra. In the twenty-first O site, O is bonded in a distorted T-shaped geometry to two Pr and two Mo atoms. In the twenty-second O site, O is bonded in a distorted trigonal non-coplanar geometry to one Pr and two Mo atoms. In the twenty-third O site, O is bonded in a 3-coordinate geometry to one Pr and two Mo atoms. In the twenty-fourth O site, O is bonded in a 5-coordinate geometry to two Pr and three Mo atoms. In the twenty-fifth O site, O is bonded in a rectangular see-saw-like geometry to one Pr and three Mo atoms. In the twenty-sixth O site, O is bonded to three Pr and one Mo atom to form OPr3Mo tetrahedra that share corners with seven OPr3Mo tetrahedra, a cornercorner with one OPr2Mo3 trigonal bipyramid, corners with two OPr2Mo2 trigonal pyramids, and an edgeedge with one OPr3Mo tetrahedra. In the twenty-seventh O site, O is bonded in a 4-coordinate geometry to three Pr and one Mo atom. In the twenty-eighth O site, O is bonded in a 4-coordinate geometry to two Pr and two Mo atoms.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Pr2MoO6 by Materials Project

Pr2MoO6 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are three inequivalent Pr3+ sites. In the first Pr3+ site, Pr3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Pr–O bond distances ranging from 2.34–2.61 Å. In the second Pr3+ site, Pr3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are a spread of Pr–O bond distances ranging from 2.35–2.88 Å. In the third Pr3+ site, Pr3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Pr–O bond distances ranging from 2.31–2.82 Å. Mo6+ is bonded in a distorted trigonal bipyramidal geometry to five O2- atoms. There are a spread of Mo–O bond distances ranging from 1.82–2.22 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Pr3+ and one Mo6+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Pr3+ and one Mo6+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent Pr3+ and one Mo6+ atom. In the fourth O2- site, O2- is bonded to four Pr3+ atoms to form OPr4 tetrahedra that share corners with six OPr4 tetrahedra and edges with four OPr3Mo tetrahedra. In the fifth O2- site, O2- is bonded to three Pr3+ and one Mo6+ atom to form a mixture of corner and edge-sharing OPr3Mo tetrahedra. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to three Pr3+ and one Mo6+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Pr2(MoO4)3 by Materials Project

Pr2Mo3O12 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. Pr3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Pr–O bond distances ranging from 2.45–2.59 Å. There are two inequivalent Mo6+ sites. In the first Mo6+ site, Mo6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 1.78–1.86 Å. In the second Mo6+ site, Mo6+ is bonded in a tetrahedral geometry to four O2- atoms. There is two shorter (1.77 Å) and two longer (1.84 Å) Mo–O bond length. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Pr3+ and one Mo6+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Pr3+ and one Mo6+ atom. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Pr3+ and one Mo6+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Pr3+ and one Mo6+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Pr3+ and one Mo6+ atom. In the sixth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Pr3+ and one Mo6+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Pr(MoO2)6 by Materials Project

Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on PrMoO5 by Materials Project

PrMoO5 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Pr4+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Pr–O bond distances ranging from 2.40–2.59 Å. Mo6+ is bonded in a distorted tetrahedral geometry to five O2- atoms. There are a spread of Mo–O bond distances ranging from 1.77–2.44 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Pr4+ and one Mo6+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Pr4+ and one Mo6+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Pr4+ and one Mo6+ atom. In the fourth O2- site, O2- is bonded in a distorted linear geometry to one Pr4+ and one Mo6+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Pr4+ and one Mo6+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Pr2Mo4O15 by Materials Project

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Pr3MoO7 by Materials Project

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Pr2(MoO4)3 by Materials Project

Pr2Mo3O12 crystallizes in the orthorhombic Pba2 space group. The structure is three-dimensional. there are two inequivalent Pr3+ sites. In the first Pr3+ site, Pr3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Pr–O bond distances ranging from 2.37–2.54 Å. In the second Pr3+ site, Pr3+ is bonded to seven O2- atoms to form distorted PrO7 pentagonal bipyramids that share corners with seven MoO4 tetrahedra and an edgeedge with one PrO7 pentagonal bipyramid. There are a spread of Pr–O bond distances ranging from 2.37–2.55 Å. There are three inequivalent Mo6+ sites. In the first Mo6+ site, Mo6+ is bonded to four O2- atoms to form MoO4 tetrahedra that share corners with four equivalent PrO7 pentagonal bipyramids. There are a spread of Mo–O bond distances ranging from 1.78–1.83 Å. In the second Mo6+ site, Mo6+ is bonded to four O2- atoms to form MoO4 tetrahedra that share a cornercorner with one PrO7 pentagonal bipyramid. There are a spread of Mo–O bond distances ranging from 1.77–1.83 Å. In the third Mo6+ site, Mo6+ is bonded to four O2- atoms to form MoO4 tetrahedra that share corners with two equivalent PrO7 pentagonal bipyramids. All Mo–O bond lengths are 1.79 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted linear geometry to one Pr3+ and one Mo6+ atom. In the second O2- site, O2- is bonded in a distorted linear geometry to one Pr3+ and one Mo6+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to one Pr3+ and one Mo6+ atom. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to one Pr3+ and one Mo6+ atom. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Pr3+ and one Mo6+ atom. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to one Pr3+ and one Mo6+ atom. In the seventh O2- site, O2- is bonded in a bent 150 degrees geometry to one Pr3+ and one Mo6+ atom. In the eighth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Pr3+ and one Mo6+ atom. In the ninth O2- site, O2- is bonded in a bent 150 degrees geometry to one Pr3+ and one Mo6+ atom. In the tenth O2- site, O2- is bonded in a linear geometry to one Pr3+ and one Mo6+ atom. In the eleventh O2- site, O2- is bonded in a bent 150 degrees geometry to one Pr3+ and one Mo6+ atom. In the twelfth O2- site, O2- is bonded in a bent 150 degrees geometry to one Pr3+ and one Mo6+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Pr5Mo3O16 by Materials Project

Pr5Mo3O16 crystallizes in the cubic Pn-3n space group. The structure is three-dimensional. there are nineteen inequivalent Pr3+ sites. In the first Pr3+ site, Pr3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are four shorter (2.40 Å) and four longer (2.63 Å) Pr–O bond lengths. In the second Pr3+ site, Pr3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are four shorter (2.40 Å) and four longer (2.63 Å) Pr–O bond lengths. In the third Pr3+ site, Pr3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are four shorter (2.40 Å) and four longer (2.63 Å) Pr–O bond lengths. In the fourth Pr3+ site, Pr3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are four shorter (2.40 Å) and four longer (2.63 Å) Pr–O bond lengths. In the fifth Pr3+ site, Pr3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are four shorter (2.40 Å) and four longer (2.63 Å) Pr–O bond lengths. In the sixth Pr3+ site, Pr3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are four shorter (2.40 Å) and four longer (2.63 Å) Pr–O bond lengths. In the seventh Pr3+ site, Pr3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are four shorter (2.40 Å) and four longer (2.63 Å) Pr–O bond lengths. In the eighth Pr3+ site, Pr3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are four shorter (2.40 Å) and four longer (2.63 Å) Pr–O bond lengths. In the ninth Pr3+ site, Pr3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are four shorter (2.40 Å) and four longer (2.63 Å) Pr–O bond lengths. In the tenth Pr3+ site, Pr3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are four shorter (2.40 Å) and four longer (2.63 Å) Pr–O bond lengths. In the eleventh Pr3+ site, Pr3+ is bonded in a distorted body-centered cubic geometry to eight O2- atoms. There are four shorter (2.40 Å) and four longer (2.63 Å) Pr–O bond lengths. In the twelfth Pr3+ site, Pr3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are two shorter (2.35 Å) and six longer (2.60 Å) Pr–O bond lengths. In the thirteenth Pr3+ site, Pr3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are two shorter (2.35 Å) and six longer (2.60 Å) Pr–O bond lengths. In the fourteenth Pr3+ site, Pr3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are two shorter (2.35 Å) and six longer (2.60 Å) Pr–O bond lengths. In the fifteenth Pr3+ site, Pr3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are two shorter (2.35 Å) and six longer (2.60 Å) Pr–O bond lengths. In the sixteenth Pr3+ site, Pr3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are two shorter (2.35 Å) and six longer (2.60 Å) Pr–O bond lengths. In the seventeenth Pr3+ site, Pr3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are two shorter (2.35 Å) and six longer (2.60 Å) Pr–O bond lengths. In the eighteenth Pr3+ site, Pr3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are two shorter (2.35 Å) and six longer (2.60 Å) Pr–O bond lengths. In the nineteenth Pr3+ site, Pr3+ is bonded in a body-centered cubic geometry to eight O2- atoms. There are two shorter (2.35 Å) and six longer (2.60 Å) Pr–O bond lengths. There are eleven inequivalent Mo+5.67+ sites. In the first Mo+5.67+ site, Mo+5.67+ is bonded in a tetrahedral geometry to four equivalent O2- atoms. All Mo–O bond lengths are 1.83 Å. In the second Mo+5.67+ site, Mo+5.67+ is bonded in a tetrahedral geometry to four equivalent O2- atoms. All Mo–O bond lengths are 1.83 Å. In the third Mo+5.67+ site, Mo+5.67+ is bonded in a tetrahedral geometry to four equivalent O2- atoms. All Mo–O bond lengths are 1.83 Å. In the fourth Mo+5.67+ site, Mo+5.67+ is bonded in a tetrahedral geometry to four equivalent O2- atoms. All Mo–O bond lengths are 1.83 Å. In the fifth Mo+5.67+ site, Mo+5.67+ is bonded in a tetrahedral geometry to four equivalent O2- atoms. All Mo–O bond lengths are 1.83 Å. In the sixth Mo+5.67+ site, Mo+5.67+ is bonded in a tetrahedral geometry to four equivalent O2- atoms. All Mo–O bond lengths are 1.83 Å. In the seventh Mo+5.67+ site, Mo+5.67+ is bonded in a tetrahedral geometry to four equivalent O2- atoms. All Mo–O bond lengths are 1.83 Å. In the eighth Mo+5.67+ site, Mo+5.67+ is bonded in a tetrahedral geometry to four equivalent O2- atoms. All Mo–O bond lengths are 1.83 Å. In the ninth Mo+5.67+ site, Mo+5.67+ is bonded in a tetrahedral geometry to four equivalent O2- atoms. All Mo–O bond lengths are 1.83 Å. In the tenth Mo+5.67+ site, Mo+5.67+ is bonded in a tetrahedral geometry to four equivalent O2- atoms. All Mo–O bond lengths are 1.83 Å. In the eleventh Mo+5.67+ site, Mo+5.67+ is bonded in a tetrahedral geometry to four equivalent O2- atoms. All Mo–O bond lengths are 1.83 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to two Pr3+ and one Mo+5.67+ atom. In the second O2- site, O2- is bonded to four Pr3+ atoms to form a mixture of corner and edge-sharing OPr4 tetrahedra.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Pr4(MoO2)9 by Materials Project

Mo(Pr10Mo22O45)2 crystallizes in the monoclinic Cm space group. The structure is three-dimensional and consists of two molybdenum molecules and one Pr10Mo22O45 framework. In the Pr10Mo22O45 framework, there are fourteen inequivalent Pr3+ sites. In the first Pr3+ site, Pr3+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Pr–O bond distances ranging from 2.34–2.79 Å. In the second Pr3+ site, Pr3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Pr–O bond distances ranging from 2.33–2.88 Å. In the third Pr3+ site, Pr3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Pr–O bond distances ranging from 2.30–2.49 Å. In the fourth Pr3+ site, Pr3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Pr–O bond distances ranging from 2.27–2.51 Å. In the fifth Pr3+ site, Pr3+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Pr–O bond distances ranging from 2.34–3.01 Å. In the sixth Pr3+ site, Pr3+ is bonded in a 7-coordinate geometry to eight O2- atoms. There are a spread of Pr–O bond distances ranging from 2.40–3.07 Å. In the seventh Pr3+ site, Pr3+ is bonded in a 5-coordinate geometry to eight O2- atoms. There are a spread of Pr–O bond distances ranging from 2.40–3.04 Å. In the eighth Pr3+ site, Pr3+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Pr–O bond distances ranging from 2.33–3.01 Å. In the ninth Pr3+ site, Pr3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Pr–O bond distances ranging from 2.38–2.73 Å. In the tenth Pr3+ site, Pr3+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Pr–O bond distances ranging from 2.37–2.96 Å. In the eleventh Pr3+ site, Pr3+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Pr–O bond distances ranging from 2.39–2.95 Å. In the twelfth Pr3+ site, Pr3+ is bonded in a 10-coordinate geometry to ten O2- atoms. There are a spread of Pr–O bond distances ranging from 2.42–3.00 Å. In the thirteenth Pr3+ site, Pr3+ is bonded in a 6-coordinate geometry to eight O2- atoms. There are a spread of Pr–O bond distances ranging from 2.30–2.88 Å. In the fourteenth Pr3+ site, Pr3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Pr–O bond distances ranging from 2.34–2.91 Å. There are twenty-seven inequivalent Mo+2.67+ sites. In the first Mo+2.67+ site, Mo+2.67+ is bonded to five O2- atoms to form corner-sharing MoO5 square pyramids. The corner-sharing octahedra tilt angles range from 45–54°. There are a spread of Mo–O bond distances ranging from 2.13–2.20 Å. In the second Mo+2.67+ site, Mo+2.67+ is bonded to five O2- atoms to form corner-sharing MoO5 square pyramids. The corner-sharing octahedra tilt angles range from 48–51°. There are a spread of Mo–O bond distances ranging from 2.13–2.20 Å. In the third Mo+2.67+ site, Mo+2.67+ is bonded to five O2- atoms to form MoO5 square pyramids that share corners with two equivalent MoO6 octahedra and corners with two equivalent MoO5 square pyramids. The corner-sharing octahedral tilt angles are 51°. There are a spread of Mo–O bond distances ranging from 2.08–2.18 Å. In the fourth Mo+2.67+ site, Mo+2.67+ is bonded to five O2- atoms to form MoO5 square pyramids that share corners with two MoO6 octahedra and corners with two MoO5 square pyramids. The corner-sharing octahedra tilt angles range from 51–55°. There are a spread of Mo–O bond distances ranging from 2.10–2.18 Å. In the fifth Mo+2.67+ site, Mo+2.67+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 2.05–2.15 Å. In the sixth Mo+2.67+ site, Mo+2.67+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 2.06–2.13 Å. In the seventh Mo+2.67+ site, Mo+2.67+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are two shorter (2.15 Å) and two longer (2.16 Å) Mo–O bond lengths. In the eighth Mo+2.67+ site, Mo+2.67+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 2.10–2.17 Å. In the ninth Mo+2.67+ site, Mo+2.67+ is bonded to five O2- atoms to form MoO5 square pyramids that share corners with three MoO5 square pyramids, an edgeedge with one MoO6 octahedra, and an edgeedge with one MoO5 square pyramid. There are a spread of Mo–O bond distances ranging from 2.13–2.17 Å. In the tenth Mo+2.67+ site, Mo+2.67+ is bonded to five O2- atoms to form MoO5 square pyramids that share corners with three MoO5 square pyramids, an edgeedge with one MoO6 octahedra, and an edgeedge with one MoO5 square pyramid. There are a spread of Mo–O bond distances ranging from 2.09–2.19 Å. In the eleventh Mo+2.67+ site, Mo+2.67+ is bonded to five O2- atoms to form MoO5 square pyramids that share corners with three MoO5 square pyramids, an edgeedge with one MoO6 octahedra, and an edgeedge with one MoO5 square pyramid. There are a spread of Mo–O bond distances ranging from 2.11–2.21 Å. In the twelfth Mo+2.67+ site, Mo+2.67+ is bonded to five O2- atoms to form MoO5 square pyramids that share corners with two MoO5 square pyramids and an edgeedge with one MoO6 octahedra. There are a spread of Mo–O bond distances ranging from 2.03–2.17 Å. In the thirteenth Mo+2.67+ site, Mo+2.67+ is bonded to five O2- atoms to form MoO5 square pyramids that share corners with two equivalent MoO5 square pyramids and an edgeedge with one MoO6 octahedra. There are a spread of Mo–O bond distances ranging from 2.05–2.16 Å. In the fourteenth Mo+2.67+ site, Mo+2.67+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 2.11–2.15 Å. In the fifteenth Mo+2.67+ site, Mo+2.67+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 2.10–2.14 Å. In the sixteenth Mo+2.67+ site, Mo+2.67+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 2.10–2.15 Å. In the seventeenth Mo+2.67+ site, Mo+2.67+ is bonded to six O2- atoms to form MoO6 octahedra that share a cornercorner with one MoO5 square pyramid and edges with four MoO6 octahedra. There are a spread of Mo–O bond distances ranging from 2.10–2.26 Å. In the eighteenth Mo+2.67+ site, Mo+2.67+ is bonded to six O2- atoms to form MoO6 octahedra that share a cornercorner with one MoO5 square pyramid and edges with four MoO6 octahedra. There are a spread of Mo–O bond distances ranging from 2.06–2.24 Å. In the nineteenth Mo+2.67+ site, Mo+2.67+ is bonded to six O2- atoms to form MoO6 octahedra that share a cornercorner with one MoO5 square pyramid and edges with four MoO6 octahedra. There are a spread of Mo–O bond distances ranging from 2.06–2.24 Å. In the twentieth Mo+2.67+ site, Mo+2.67+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with two MoO5 square pyramids, edges with two MoO6 octahedra, and edges with three MoO5 square pyramids. There are a spread of Mo–O bond distances ranging from 2.05–2.17 Å. In the twenty-first Mo+2.67+ site, Mo+2.67+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with two equivalent MoO5 square pyramids, edges with two equivalent MoO6 octahedra, and edges with three MoO5 square pyramids. There are a spread of Mo–O bond distances ranging from 2.10–2.17 Å. In the twenty-second Mo+2.67+ site, Mo+2.67+ is bonded in a distorted T-shaped geometry to three O2- atoms. There are two shorter (2.09 Å) and one longer (2.15 Å) Mo–O bond lengths. In the twenty-third Mo+2.67+ site, Mo+2.67+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with two MoO5 square pyramids and edges with four MoO6 octahedra. There are a spread of Mo–O bond distances ranging from 2.09–2.15 Å. In the twenty-fourth Mo+2.67+ site, Mo+2.67+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with two equivalent MoO5 square pyramids and edges with four MoO6 octahedra. There are a spread of Mo–O bond distances ranging from 2.12–2.17 Å. In the twenty-fifth Mo+2.67+ site, Mo+2.67+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 2.06–2.21 Å. In the twenty-sixth Mo+2.67+ site, Mo+2.67+ is bonded in a rectangular see-saw-like geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 2.05–2.21 Å. In the twenty-seventh Mo+2.67+ site, Mo+2.67+ is bonded to six O2- atoms to form edge-sharing MoO6 octahedra. There are a spread of Mo–O bond distances ranging from 2.14–2.18 Å. There are fifty-six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 5-coordinate geometry to three Pr3+ and two Mo+2.67+ atoms. In the second O2- site, O2- is bonded in a 5-coordinate geometry to three Pr3+ and two Mo+2.67+ atoms. In the third O2- site, O2- is bonded in a 3-coordinate geometry to three Pr3+ and two Mo+2.67+ atoms. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to three Mo+2.67+ atoms. In the fifth O2- site, O2- is bonded in a 4-coordinate geometry to one Pr3+ and three Mo+2.67+ atoms. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to three Mo+2.67+ atoms. In the seventh O2- site, O2- is bonded in a 3-coordinate geometry to three Mo+2.67+ atoms. In the eighth O2- site, O2- is bonded to one Pr3+ and three Mo+2.67+ atoms to form distorted corner-sharing OPrMo3 tetrahedra. In the ninth O2- site, O2- is bonded to one Pr3+ and three Mo+2.67+ atoms to form distorted OPrMo3 tetrahedra that share corners with three OPr4 tetrahedra and edges with two equivalent OPr2Mo2 trigonal pyramids. In the tenth O2- site, O2- is bonded in a distorted see-saw-like geometry to two Pr3+ and two Mo+2.67+ atoms. In the eleventh O2- site, O2- is bonded to two Pr3+ and two Mo+2.67+ atoms to form distorted OPr2Mo2 tetrahedra that share corners with two equivalent OPr4 tetrahedra, corners with two OPrMo3 trigonal pyramids, and an edgeedge with one OPr2Mo2 tetrahedra. In the twelfth O2- site, O2- is bonded in a distorted see-saw-like geometry to two Pr3+ and two Mo+2.67+ atoms. In the thirteenth O2- site, O2- is bonded to four Pr3+ atoms to form corner-sharing OPr4 tetrahedra. In the fourteenth O2- site, O2- is bonded to four Pr3+ atoms to form OPr4 tetrahedra that share corners with four OPrMo3 tetrahedra and corners with two equivalent OPr2Mo2 trigonal pyramids. In the fifteenth O2- site, O2- is bonded in a trigonal planar geometry to three Pr3+ atoms. In the sixteenth O2- site, O2- is bonded to four Pr3+ atoms to form corner-sharing OPr4 tetrahedra. In the seventeenth O2- site, O2- is bonded in a distorted see-saw-like geometry to two Pr3+ and two Mo+2.67+ atoms. In the eighteenth O2- site, O2- is bonded in a distorted see-saw-like geometry to two Pr3+ and two Mo+2.67+ atoms. In the nineteenth O2- site, O2- is bonded to two Pr3+ and two Mo+2.67+ atoms to form distorted OPr2Mo2 trigonal pyramids that share corners with four OPr2Mo2 tetrahedra, an edgeedge with one OPrMo3 tetrahedra, and an edgeedge with one OPr2Mo2 trigonal pyramid. In the twentieth O2- site, O2- is bonded in a 3-coordinate geometry to two Pr3+ and two Mo+2.67+ atoms. In the twenty-first O2- site, O2- is bonded in a 3-coordinate geometry to two Pr3+ and two Mo+2.67+ atoms. In the twenty-second O2- site, O2- is bonded in a 3-coordinate geometry to three Pr3+ and two Mo+2.67+ atoms. In the twenty-third O2- site, O2- is bonded in a distorted T-shaped geometry to three Mo+2.67+ atoms. In the twenty-fourth O2- site, O2- is bonded in a 5-coordinate geometry to one Pr3+ and three Mo+2.67+ atoms. In the twenty-fifth O2- site, O2- is bonded in a 5-coordinate geometry to two equivalent Pr3+ and three Mo+2.67+ atoms. In the twenty-sixth O2- si

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Pr2(MoO4)3 by Materials Project

Pr2Mo3O12 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are three inequivalent Pr3+ sites. In the first Pr3+ site, Pr3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Pr–O bond distances ranging from 2.44–2.58 Å. In the second Pr3+ site, Pr3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Pr–O bond distances ranging from 2.42–2.59 Å. In the third Pr3+ site, Pr3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Pr–O bond distances ranging from 2.44–2.57 Å. There are five inequivalent Mo6+ sites. In the first Mo6+ site, Mo6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 1.77–1.84 Å. In the second Mo6+ site, Mo6+ is bonded in a tetrahedral geometry to four O2- atoms. There is three shorter (1.79 Å) and one longer (1.86 Å) Mo–O bond length. In the third Mo6+ site, Mo6+ is bonded in a tetrahedral geometry to four O2- atoms. There is two shorter (1.77 Å) and two longer (1.85 Å) Mo–O bond length. In the fourth Mo6+ site, Mo6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 1.78–1.85 Å. In the fifth Mo6+ site, Mo6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 1.78–1.86 Å. There are eighteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Pr3+ and one Mo6+ atom. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Pr3+ and one Mo6+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Pr3+ and one Mo6+ atom. In the fourth O2- site, O2- is bonded in a 3-coordinate geometry to two Pr3+ and one Mo6+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to one Pr3+ and one Mo6+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Pr3+ and one Mo6+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Pr3+ and one Mo6+ atom. In the eighth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Pr3+ and one Mo6+ atom. In the ninth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Pr3+ and one Mo6+ atom. In the tenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Pr3+ and one Mo6+ atom. In the eleventh O2- site, O2- is bonded in a distorted trigonal planar geometry to two Pr3+ and one Mo6+ atom. In the twelfth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Pr3+ and one Mo6+ atom. In the thirteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Pr3+ and one Mo6+ atom. In the fourteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Pr3+ and one Mo6+ atom. In the fifteenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one Pr3+ and one Mo6+ atom. In the sixteenth O2- site, O2- is bonded in a distorted trigonal planar geometry to two Pr3+ and one Mo6+ atom. In the seventeenth O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Pr3+ and one Mo6+ atom. In the eighteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Pr3+ and one Mo6+ atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Pr2(MoO4)3 by Materials Project

Pr2Mo3O12 crystallizes in the tetragonal P-42_1m space group. The structure is three-dimensional. Pr3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Pr–O bond distances ranging from 2.37–2.54 Å. There are two inequivalent Mo6+ sites. In the first Mo6+ site, Mo6+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Mo–O bond distances ranging from 1.78–1.83 Å. In the second Mo6+ site, Mo6+ is bonded in a tetrahedral geometry to four equivalent O2- atoms. All Mo–O bond lengths are 1.79 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted linear geometry to one Pr3+ and one Mo6+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one Pr3+ and one Mo6+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent Pr3+ and one Mo6+ atom. In the fourth O2- site, O2- is bonded in a linear geometry to one Pr3+ and one Mo6+ atom.

36 MATERIALS SCIENCE↗