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PmRh3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Pm is bonded to twelve equivalent Rh atoms to form a mixture of face and corner-sharing PmRh12 cuboctahedra. All Pm–Rh bond lengths are 2.91 Å. Rh is bonded in a distorted square co-planar geometry to four equivalent Pm atoms.
PmSn3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Pm is bonded to twelve equivalent Sn atoms to form a mixture of face and corner-sharing PmSn12 cuboctahedra. All Pm–Sn bond lengths are 3.37 Å. Sn is bonded in a distorted square co-planar geometry to four equivalent Pm atoms.
PmTl3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Pm is bonded to twelve equivalent Tl atoms to form PmTl12 cuboctahedra that share corners with twelve equivalent PmTl12 cuboctahedra, edges with twenty-four equivalent TlPm4Tl8 cuboctahedra, faces with six equivalent PmTl12 cuboctahedra, and faces with twelve equivalent TlPm4Tl8 cuboctahedra. All Pm–Tl bond lengths are 3.41 Å. Tl is bonded to four equivalent Pm and eight equivalent Tl atoms to form distorted TlPm4Tl8 cuboctahedra that share corners with twelve equivalent TlPm4Tl8 cuboctahedra, edges with eight equivalent PmTl12 cuboctahedra, edges with sixteen equivalent TlPm4Tl8 cuboctahedra, faces with four equivalent PmTl12 cuboctahedra, and faces with fourteen equivalent TlPm4Tl8 cuboctahedra. All Tl–Tl bond lengths are 3.41 Å.
Pm3Sn is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Pm is bonded in a distorted square co-planar geometry to four equivalent Sn atoms. All Pm–Sn bond lengths are 3.49 Å. Sn is bonded to twelve equivalent Pm atoms to form a mixture of corner and face-sharing SnPm12 cuboctahedra.
Pm3Pb is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Pm is bonded in a distorted square co-planar geometry to four equivalent Pb atoms. All Pm–Pb bond lengths are 3.52 Å. Pb is bonded to twelve equivalent Pm atoms to form a mixture of face and corner-sharing PbPm12 cuboctahedra.
PmBi3 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Pm is bonded to twelve Bi atoms to form a mixture of edge, face, and corner-sharing PmBi12 cuboctahedra. There are four shorter (3.34 Å) and eight longer (3.65 Å) Pm–Bi bond lengths. There are two inequivalent Bi sites. In the first Bi site, Bi is bonded in a 12-coordinate geometry to four equivalent Pm and four equivalent Bi atoms. All Bi–Bi bond lengths are 3.34 Å. In the second Bi site, Bi is bonded in a square co-planar geometry to four equivalent Pm atoms.
MgPm is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Mg is bonded in a body-centered cubic geometry to eight equivalent Pm atoms. All Mg–Pm bond lengths are 3.34 Å. Pm is bonded in a body-centered cubic geometry to eight equivalent Mg atoms.
Sm3Pm is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Sm is bonded to eight equivalent Sm and four equivalent Pm atoms to form SmPm4Sm8 cuboctahedra that share corners with twelve equivalent SmPm4Sm8 cuboctahedra, edges with eight equivalent PmSm12 cuboctahedra, edges with sixteen equivalent SmPm4Sm8 cuboctahedra, faces with four equivalent PmSm12 cuboctahedra, and faces with fourteen equivalent SmPm4Sm8 cuboctahedra. All Sm–Sm bond lengths are 3.64 Å. All Sm–Pm bond lengths are 3.64 Å. Pm is bonded to twelve equivalent Sm atoms to form PmSm12 cuboctahedra that share corners with twelve equivalent PmSm12 cuboctahedra, edges with twenty-four equivalent SmPm4Sm8 cuboctahedra, faces with six equivalent PmSm12 cuboctahedra, and faces with twelve equivalent SmPm4Sm8 cuboctahedra.
PmY3 is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Pm is bonded to twelve Y atoms to form PmY12 cuboctahedra that share corners with four equivalent PmY12 cuboctahedra, corners with eight equivalent YPm4Y8 cuboctahedra, edges with eight equivalent PmY12 cuboctahedra, edges with sixteen equivalent YPm4Y8 cuboctahedra, faces with four equivalent PmY12 cuboctahedra, and faces with fourteen YPm4Y8 cuboctahedra. All Pm–Y bond lengths are 3.60 Å. There are two inequivalent Y sites. In the first Y site, Y is bonded to four equivalent Pm and eight Y atoms to form YPm4Y8 cuboctahedra that share corners with twelve equivalent YPm4Y8 cuboctahedra, edges with eight equivalent PmY12 cuboctahedra, edges with sixteen YPm4Y8 cuboctahedra, faces with four equivalent PmY12 cuboctahedra, and faces with fourteen YPm4Y8 cuboctahedra. All Y–Y bond lengths are 3.60 Å. In the second Y site, Y is bonded to four equivalent Pm and eight equivalent Y atoms to form YPm4Y8 cuboctahedra that share corners with four equivalent YPm4Y8 cuboctahedra, corners with eight equivalent PmY12 cuboctahedra, edges with twenty-four YPm4Y8 cuboctahedra, faces with six equivalent PmY12 cuboctahedra, and faces with twelve YPm4Y8 cuboctahedra.
MgPm2Se4 crystallizes in the orthorhombic Pca2_1 space group. The structure is three-dimensional. there are two inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to six Se2- atoms to form MgSe6 octahedra that share a cornercorner with one PmSe6 octahedra, corners with two equivalent MgSe6 octahedra, corners with four PmSe7 pentagonal bipyramids, an edgeedge with one MgSe6 octahedra, edges with four PmSe6 octahedra, and edges with three PmSe7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 12–53°. There are a spread of Mg–Se bond distances ranging from 2.66–3.04 Å. In the second Mg2+ site, Mg2+ is bonded to six Se2- atoms to form MgSe6 octahedra that share a cornercorner with one PmSe6 octahedra, corners with two equivalent MgSe6 octahedra, corners with four PmSe7 pentagonal bipyramids, an edgeedge with one MgSe6 octahedra, edges with four PmSe6 octahedra, and edges with three PmSe7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 12–53°. There are a spread of Mg–Se bond distances ranging from 2.68–2.93 Å. There are four inequivalent Pm3+ sites. In the first Pm3+ site, Pm3+ is bonded to six Se2- atoms to form PmSe6 octahedra that share a cornercorner with one MgSe6 octahedra, corners with two equivalent PmSe6 octahedra, corners with four PmSe7 pentagonal bipyramids, an edgeedge with one PmSe6 octahedra, edges with four MgSe6 octahedra, and edges with three PmSe7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 12–53°. There are a spread of Pm–Se bond distances ranging from 2.88–2.96 Å. In the second Pm3+ site, Pm3+ is bonded to six Se2- atoms to form PmSe6 octahedra that share a cornercorner with one MgSe6 octahedra, corners with two equivalent PmSe6 octahedra, corners with four PmSe7 pentagonal bipyramids, an edgeedge with one PmSe6 octahedra, edges with four MgSe6 octahedra, and edges with three PmSe7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 12–53°. There are a spread of Pm–Se bond distances ranging from 2.87–2.99 Å. In the third Pm3+ site, Pm3+ is bonded to seven Se2- atoms to form distorted PmSe7 pentagonal bipyramids that share corners with four MgSe6 octahedra, corners with four PmSe6 octahedra, edges with three MgSe6 octahedra, edges with three PmSe6 octahedra, and faces with two equivalent PmSe7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 14–70°. There are a spread of Pm–Se bond distances ranging from 2.93–3.19 Å. In the fourth Pm3+ site, Pm3+ is bonded to seven Se2- atoms to form distorted PmSe7 pentagonal bipyramids that share corners with four MgSe6 octahedra, corners with four PmSe6 octahedra, edges with three MgSe6 octahedra, edges with three PmSe6 octahedra, and faces with two equivalent PmSe7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 16–70°. There are a spread of Pm–Se bond distances ranging from 2.92–3.23 Å. There are eight inequivalent Se2- sites. In the first Se2- site, Se2- is bonded to two Mg2+ and three Pm3+ atoms to form distorted SePm3Mg2 trigonal bipyramids that share corners with two equivalent SePm3Mg2 square pyramids, corners with three equivalent SePm3Mg tetrahedra, corners with two equivalent SePm3Mg2 trigonal bipyramids, edges with five SePm3Mg2 square pyramids, and edges with three SePm3Mg2 trigonal bipyramids. In the second Se2- site, Se2- is bonded to two Mg2+ and three Pm3+ atoms to form distorted SePm3Mg2 trigonal bipyramids that share corners with six SePm3Mg2 square pyramids, corners with two equivalent SePm3Mg tetrahedra, corners with two equivalent SePm3Mg2 trigonal bipyramids, edges with three SePm3Mg2 square pyramids, an edgeedge with one SePm3Mg tetrahedra, and edges with three SePm3Mg2 trigonal bipyramids. In the third Se2- site, Se2- is bonded to one Mg2+ and three Pm3+ atoms to form a mixture of distorted edge and corner-sharing SePm3Mg tetrahedra. In the fourth Se2- site, Se2- is bonded in a distorted rectangular see-saw-like geometry to one Mg2+ and three Pm3+ atoms. In the fifth Se2- site, Se2- is bonded to two Mg2+ and three Pm3+ atoms to form distorted SePm3Mg2 square pyramids that share a cornercorner with one SePm3Mg tetrahedra, corners with eight SePm3Mg2 trigonal bipyramids, edges with four SePm3Mg2 square pyramids, an edgeedge with one SePm3Mg tetrahedra, and edges with two SePm3Mg2 trigonal bipyramids. In the sixth Se2- site, Se2- is bonded to two Mg2+ and three Pm3+ atoms to form SePm3Mg2 square pyramids that share corners with two equivalent SePm4Mg square pyramids, a cornercorner with one SePm3Mg tetrahedra, corners with six SePm3Mg2 trigonal bipyramids, edges with three SePm3Mg2 square pyramids, an edgeedge with one SePm3Mg tetrahedra, and edges with three SePm3Mg2 trigonal bipyramids. In the seventh Se2- site, Se2- is bonded to one Mg2+ and four Pm3+ atoms to form distorted SePm4Mg square pyramids that share corners with two equivalent SePm3Mg2 square pyramids, corners with two equivalent SePm3Mg tetrahedra, corners with two equivalent SePm4Mg trigonal bipyramids, edges with three SePm3Mg2 square pyramids, an edgeedge with one SePm3Mg tetrahedra, and edges with five SePm3Mg2 trigonal bipyramids. In the eighth Se2- site, Se2- is bonded to one Mg2+ and four Pm3+ atoms to form distorted SePm4Mg trigonal bipyramids that share corners with eight SePm3Mg2 square pyramids, corners with three equivalent SePm3Mg tetrahedra, edges with two SePm3Mg2 square pyramids, and edges with four SePm3Mg2 trigonal bipyramids.
PmPr3 is Copper-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Pm is bonded to twelve Pr atoms to form PmPr12 cuboctahedra that share corners with four equivalent PmPr12 cuboctahedra, corners with eight equivalent PrPm4Pr8 cuboctahedra, edges with eight equivalent PmPr12 cuboctahedra, edges with sixteen equivalent PrPm4Pr8 cuboctahedra, faces with four equivalent PmPr12 cuboctahedra, and faces with fourteen PrPm4Pr8 cuboctahedra. There are four shorter (3.70 Å) and eight longer (3.71 Å) Pm–Pr bond lengths. There are two inequivalent Pr sites. In the first Pr site, Pr is bonded to four equivalent Pm and eight Pr atoms to form PrPm4Pr8 cuboctahedra that share corners with twelve equivalent PrPm4Pr8 cuboctahedra, edges with eight equivalent PmPr12 cuboctahedra, edges with sixteen PrPm4Pr8 cuboctahedra, faces with four equivalent PmPr12 cuboctahedra, and faces with fourteen PrPm4Pr8 cuboctahedra. There are four shorter (3.70 Å) and four longer (3.71 Å) Pr–Pr bond lengths. In the second Pr site, Pr is bonded to four equivalent Pm and eight equivalent Pr atoms to form PrPm4Pr8 cuboctahedra that share corners with four equivalent PrPm4Pr8 cuboctahedra, corners with eight equivalent PmPr12 cuboctahedra, edges with twenty-four PrPm4Pr8 cuboctahedra, faces with six equivalent PmPr12 cuboctahedra, and faces with twelve PrPm4Pr8 cuboctahedra.
PmNd3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Pm is bonded to twelve equivalent Nd atoms to form PmNd12 cuboctahedra that share corners with twelve equivalent PmNd12 cuboctahedra, edges with twenty-four equivalent NdPm4Nd8 cuboctahedra, faces with six equivalent PmNd12 cuboctahedra, and faces with twelve equivalent NdPm4Nd8 cuboctahedra. All Pm–Nd bond lengths are 3.68 Å. Nd is bonded to four equivalent Pm and eight equivalent Nd atoms to form NdPm4Nd8 cuboctahedra that share corners with twelve equivalent NdPm4Nd8 cuboctahedra, edges with eight equivalent PmNd12 cuboctahedra, edges with sixteen equivalent NdPm4Nd8 cuboctahedra, faces with four equivalent PmNd12 cuboctahedra, and faces with fourteen equivalent NdPm4Nd8 cuboctahedra. All Nd–Nd bond lengths are 3.68 Å.
MgPm2Se4 crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of one MgPm2Se4 sheet oriented in the (0, 0, 1) direction. there are two inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to four Se2- atoms to form MgSe4 tetrahedra that share a cornercorner with one MgSe6 octahedra, corners with two equivalent PmSe6 octahedra, and corners with six PmSe4 tetrahedra. The corner-sharing octahedra tilt angles range from 58–62°. There are a spread of Mg–Se bond distances ranging from 2.57–2.62 Å. In the second Mg2+ site, Mg2+ is bonded to six Se2- atoms to form MgSe6 octahedra that share a cornercorner with one MgSe4 tetrahedra, corners with five PmSe4 tetrahedra, edges with two equivalent MgSe6 octahedra, and edges with four equivalent PmSe6 octahedra. There are a spread of Mg–Se bond distances ranging from 2.81–2.90 Å. There are four inequivalent Pm3+ sites. In the first Pm3+ site, Pm3+ is bonded to four Se2- atoms to form PmSe4 tetrahedra that share a cornercorner with one PmSe6 octahedra, corners with two equivalent MgSe6 octahedra, corners with two equivalent MgSe4 tetrahedra, and corners with four PmSe4 tetrahedra. The corner-sharing octahedra tilt angles range from 58–64°. There are a spread of Pm–Se bond distances ranging from 2.77–2.81 Å. In the second Pm3+ site, Pm3+ is bonded to six Se2- atoms to form PmSe6 octahedra that share corners with two equivalent MgSe4 tetrahedra, corners with four PmSe4 tetrahedra, edges with two equivalent PmSe6 octahedra, and edges with four equivalent MgSe6 octahedra. There are a spread of Pm–Se bond distances ranging from 2.96–3.03 Å. In the third Pm3+ site, Pm3+ is bonded to four Se2- atoms to form PmSe4 tetrahedra that share a cornercorner with one PmSe6 octahedra, corners with two equivalent MgSe6 octahedra, corners with two equivalent MgSe4 tetrahedra, and corners with four PmSe4 tetrahedra. The corner-sharing octahedra tilt angles range from 58–67°. There are one shorter (2.77 Å) and three longer (2.80 Å) Pm–Se bond lengths. In the fourth Pm3+ site, Pm3+ is bonded to four Se2- atoms to form PmSe4 tetrahedra that share a cornercorner with one MgSe6 octahedra, corners with two equivalent PmSe6 octahedra, corners with two equivalent MgSe4 tetrahedra, and corners with four PmSe4 tetrahedra. The corner-sharing octahedra tilt angles range from 56–64°. There are a spread of Pm–Se bond distances ranging from 2.78–2.80 Å. There are eight inequivalent Se2- sites. In the first Se2- site, Se2- is bonded to two equivalent Mg2+ and two Pm3+ atoms to form a mixture of distorted edge and corner-sharing SePm2Mg2 tetrahedra. In the second Se2- site, Se2- is bonded to two Mg2+ and two equivalent Pm3+ atoms to form distorted SePm2Mg2 tetrahedra that share corners with nine SePm2Mg2 tetrahedra and edges with three SePm3Mg tetrahedra. In the third Se2- site, Se2- is bonded in a trigonal non-coplanar geometry to one Mg2+ and two Pm3+ atoms. In the fourth Se2- site, Se2- is bonded in a trigonal non-coplanar geometry to three Pm3+ atoms. In the fifth Se2- site, Se2- is bonded in a trigonal non-coplanar geometry to one Mg2+ and two Pm3+ atoms. In the sixth Se2- site, Se2- is bonded in a trigonal non-coplanar geometry to one Mg2+ and two Pm3+ atoms. In the seventh Se2- site, Se2- is bonded to one Mg2+ and three Pm3+ atoms to form distorted SePm3Mg tetrahedra that share corners with nine SePm2Mg2 tetrahedra and edges with three SePm3Mg tetrahedra. In the eighth Se2- site, Se2- is bonded to two equivalent Mg2+ and two Pm3+ atoms to form distorted SePm2Mg2 tetrahedra that share corners with nine SePm2Mg2 tetrahedra and edges with three SePm3Mg tetrahedra.
Dy3Pm is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Dy is bonded to eight equivalent Dy and four equivalent Pm atoms to form DyPm4Dy8 cuboctahedra that share corners with twelve equivalent DyPm4Dy8 cuboctahedra, edges with eight equivalent PmDy12 cuboctahedra, edges with sixteen equivalent DyPm4Dy8 cuboctahedra, faces with four equivalent PmDy12 cuboctahedra, and faces with fourteen equivalent DyPm4Dy8 cuboctahedra. All Dy–Dy bond lengths are 3.57 Å. All Dy–Pm bond lengths are 3.57 Å. Pm is bonded to twelve equivalent Dy atoms to form PmDy12 cuboctahedra that share corners with twelve equivalent PmDy12 cuboctahedra, edges with twenty-four equivalent DyPm4Dy8 cuboctahedra, faces with six equivalent PmDy12 cuboctahedra, and faces with twelve equivalent DyPm4Dy8 cuboctahedra.
PmHg3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pm is bonded in a distorted body-centered cubic geometry to fourteen Hg atoms. There are eight shorter (3.18 Å) and six longer (3.68 Å) Pm–Hg bond lengths. There are two inequivalent Hg sites. In the first Hg site, Hg is bonded to four equivalent Pm and four equivalent Hg atoms to form a mixture of distorted edge, face, and corner-sharing HgPm4Hg4 tetrahedra. All Hg–Hg bond lengths are 3.18 Å. In the second Hg site, Hg is bonded in a 8-coordinate geometry to six equivalent Pm and eight equivalent Hg atoms.
PmTa3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Pm is bonded in a distorted body-centered cubic geometry to fourteen Ta atoms. There are eight shorter (3.00 Å) and six longer (3.46 Å) Pm–Ta bond lengths. There are two inequivalent Ta sites. In the first Ta site, Ta is bonded in a 8-coordinate geometry to four equivalent Pm and four equivalent Ta atoms. All Ta–Ta bond lengths are 3.00 Å. In the second Ta site, Ta is bonded in a 8-coordinate geometry to six equivalent Pm and eight equivalent Ta atoms.
Ba3Pm is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Ba is bonded to eight equivalent Ba and four equivalent Pm atoms to form BaBa8Pm4 cuboctahedra that share corners with twelve equivalent BaBa8Pm4 cuboctahedra, edges with eight equivalent PmBa12 cuboctahedra, edges with sixteen equivalent BaBa8Pm4 cuboctahedra, faces with four equivalent PmBa12 cuboctahedra, and faces with fourteen equivalent BaBa8Pm4 cuboctahedra. All Ba–Ba bond lengths are 4.20 Å. All Ba–Pm bond lengths are 4.20 Å. Pm is bonded to twelve equivalent Ba atoms to form PmBa12 cuboctahedra that share corners with twelve equivalent PmBa12 cuboctahedra, edges with twenty-four equivalent BaBa8Pm4 cuboctahedra, faces with six equivalent PmBa12 cuboctahedra, and faces with twelve equivalent BaBa8Pm4 cuboctahedra.
PmNd3 is Copper-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Pm is bonded to twelve Nd atoms to form PmNd12 cuboctahedra that share corners with four equivalent PmNd12 cuboctahedra, corners with eight equivalent NdPm4Nd8 cuboctahedra, edges with eight equivalent PmNd12 cuboctahedra, edges with sixteen equivalent NdPm4Nd8 cuboctahedra, faces with four equivalent PmNd12 cuboctahedra, and faces with fourteen NdPm4Nd8 cuboctahedra. There are four shorter (3.67 Å) and eight longer (3.69 Å) Pm–Nd bond lengths. There are two inequivalent Nd sites. In the first Nd site, Nd is bonded to four equivalent Pm and eight Nd atoms to form NdPm4Nd8 cuboctahedra that share corners with twelve equivalent NdPm4Nd8 cuboctahedra, edges with eight equivalent PmNd12 cuboctahedra, edges with sixteen NdPm4Nd8 cuboctahedra, faces with four equivalent PmNd12 cuboctahedra, and faces with fourteen NdPm4Nd8 cuboctahedra. There are four shorter (3.67 Å) and four longer (3.69 Å) Nd–Nd bond lengths. In the second Nd site, Nd is bonded to four equivalent Pm and eight equivalent Nd atoms to form NdPm4Nd8 cuboctahedra that share corners with four equivalent NdPm4Nd8 cuboctahedra, corners with eight equivalent PmNd12 cuboctahedra, edges with twenty-four NdPm4Nd8 cuboctahedra, faces with six equivalent PmNd12 cuboctahedra, and faces with twelve NdPm4Nd8 cuboctahedra.