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Au2Er crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Er is bonded in a distorted q6 geometry to ten equivalent Au atoms. There are eight shorter (3.02 Å) and two longer (3.03 Å) Er–Au bond lengths. Au is bonded in a 10-coordinate geometry to five equivalent Er atoms.
ErSe is Halite, Rock Salt structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Er is bonded to six equivalent Se atoms to form a mixture of corner and edge-sharing ErSe6 octahedra. The corner-sharing octahedral tilt angles are 0°. All Er–Se bond lengths are 2.85 Å. Se is bonded to six equivalent Er atoms to form a mixture of corner and edge-sharing SeEr6 octahedra. The corner-sharing octahedral tilt angles are 0°.
ErAg is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Er is bonded in a body-centered cubic geometry to eight equivalent Ag atoms. All Er–Ag bond lengths are 3.13 Å. Ag is bonded in a body-centered cubic geometry to eight equivalent Er atoms.
ErIr is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Er is bonded in a body-centered cubic geometry to eight equivalent Ir atoms. All Er–Ir bond lengths are 2.94 Å. Ir is bonded in a body-centered cubic geometry to eight equivalent Er atoms.
ErPd3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Er is bonded to twelve equivalent Pd atoms to form a mixture of face and corner-sharing ErPd12 cuboctahedra. All Er–Pd bond lengths are 2.91 Å. Pd is bonded in a distorted square co-planar geometry to four equivalent Er atoms.
Ag2Er is Titanium Disilicide-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Er is bonded in a distorted q6 geometry to ten equivalent Ag atoms. There are two shorter (3.05 Å) and eight longer (3.06 Å) Er–Ag bond lengths. Ag is bonded in a 10-coordinate geometry to five equivalent Er atoms.
ErAu2In is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Er is bonded in a body-centered cubic geometry to eight equivalent Au atoms. All Er–Au bond lengths are 3.02 Å. Au is bonded in a body-centered cubic geometry to four equivalent Er and four equivalent In atoms. All Au–In bond lengths are 3.02 Å. In is bonded in a body-centered cubic geometry to eight equivalent Au atoms.
Er2Se3 crystallizes in the tetragonal I-42d space group. The structure is three-dimensional. there are three inequivalent Er3+ sites. In the first Er3+ site, Er3+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of Er–Se bond distances ranging from 2.83–3.26 Å. In the second Er3+ site, Er3+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are four shorter (2.86 Å) and four longer (3.10 Å) Er–Se bond lengths. In the third Er3+ site, Er3+ is bonded in a 8-coordinate geometry to eight Se2- atoms. There are a spread of Er–Se bond distances ranging from 2.86–3.21 Å. There are three inequivalent Se2- sites. In the first Se2- site, Se2- is bonded to five Er3+ atoms to form a mixture of distorted edge, corner, and face-sharing SeEr5 trigonal bipyramids. In the second Se2- site, Se2- is bonded in a 6-coordinate geometry to six Er3+ atoms. In the third Se2- site, Se2- is bonded to five Er3+ atoms to form a mixture of distorted edge, corner, and face-sharing SeEr5 square pyramids.
AgErSe2 is Caswellsilverite-like structured and crystallizes in the tetragonal I4_1/amd space group. The structure is three-dimensional. Er3+ is bonded to six Se2- atoms to form ErSe6 octahedra that share corners with two equivalent AgSe6 octahedra, corners with four equivalent ErSe6 octahedra, edges with four equivalent ErSe6 octahedra, and edges with eight equivalent AgSe6 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. There are four shorter (2.85 Å) and two longer (2.86 Å) Er–Se bond lengths. Ag1+ is bonded to six Se2- atoms to form AgSe6 octahedra that share corners with two equivalent ErSe6 octahedra, corners with four equivalent AgSe6 octahedra, edges with four equivalent AgSe6 octahedra, and edges with eight equivalent ErSe6 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. There are four shorter (2.85 Å) and two longer (3.19 Å) Ag–Se bond lengths. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded to three equivalent Er3+ and three equivalent Ag1+ atoms to form a mixture of edge and corner-sharing SeEr3Ag3 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. In the second Se2- site, Se2- is bonded to three equivalent Er3+ and three equivalent Ag1+ atoms to form a mixture of edge and corner-sharing SeEr3Ag3 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. In the third Se2- site, Se2- is bonded to three equivalent Er3+ and three equivalent Ag1+ atoms to form a mixture of edge and corner-sharing SeEr3Ag3 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. There are two shorter (2.85 Å) and one longer (2.86 Å) Se–Er bond lengths. In the fourth Se2- site, Se2- is bonded to three equivalent Er3+ and three equivalent Ag1+ atoms to form a mixture of edge and corner-sharing SeEr3Ag3 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. There are two shorter (2.85 Å) and one longer (2.86 Å) Se–Er bond lengths.
ErRh3B is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Er is bonded to twelve equivalent Rh atoms to form ErRh12 cuboctahedra that share corners with twelve equivalent ErRh12 cuboctahedra, faces with six equivalent ErRh12 cuboctahedra, and faces with eight equivalent BRh6 octahedra. All Er–Rh bond lengths are 2.97 Å. Rh is bonded to four equivalent Er and two equivalent B atoms to form a mixture of distorted edge, face, and corner-sharing RhEr4B2 octahedra. The corner-sharing octahedra tilt angles range from 0–60°. Both Rh–B bond lengths are 2.10 Å. B is bonded to six equivalent Rh atoms to form BRh6 octahedra that share corners with six equivalent BRh6 octahedra and faces with eight equivalent ErRh12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°.
ErSi crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Er is bonded in a 5-coordinate geometry to seven equivalent Si atoms. There are a spread of Er–Si bond distances ranging from 2.92–3.11 Å. Si is bonded in a 9-coordinate geometry to seven equivalent Er and two equivalent Si atoms. Both Si–Si bond lengths are 2.49 Å.
ErPb3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Er is bonded to twelve equivalent Pb atoms to form a mixture of face and corner-sharing ErPb12 cuboctahedra. All Er–Pb bond lengths are 3.45 Å. Pb is bonded in a distorted square co-planar geometry to four equivalent Er atoms.
ErGa3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Er is bonded to twelve equivalent Ga atoms to form ErGa12 cuboctahedra that share corners with twelve equivalent ErGa12 cuboctahedra, edges with twenty-four equivalent GaEr4Ga8 cuboctahedra, faces with six equivalent ErGa12 cuboctahedra, and faces with twelve equivalent GaEr4Ga8 cuboctahedra. All Er–Ga bond lengths are 3.01 Å. Ga is bonded to four equivalent Er and eight equivalent Ga atoms to form distorted GaEr4Ga8 cuboctahedra that share corners with twelve equivalent GaEr4Ga8 cuboctahedra, edges with eight equivalent ErGa12 cuboctahedra, edges with sixteen equivalent GaEr4Ga8 cuboctahedra, faces with four equivalent ErGa12 cuboctahedra, and faces with fourteen equivalent GaEr4Ga8 cuboctahedra. All Ga–Ga bond lengths are 3.01 Å.
ErFe2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Er is bonded in a 12-coordinate geometry to twelve equivalent Fe atoms. All Er–Fe bond lengths are 2.99 Å. Fe is bonded to six equivalent Er and six equivalent Fe atoms to form a mixture of face, edge, and corner-sharing FeEr6Fe6 cuboctahedra. All Fe–Fe bond lengths are 2.55 Å.
ErTiGe is Matlockite structured and crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. Er is bonded in a 5-coordinate geometry to five equivalent Ge atoms. There are four shorter (2.95 Å) and one longer (3.12 Å) Er–Ge bond lengths. Ti is bonded to four equivalent Ge atoms to form a mixture of distorted corner and edge-sharing TiGe4 cuboctahedra. All Ti–Ge bond lengths are 2.76 Å. Ge is bonded in a 9-coordinate geometry to five equivalent Er and four equivalent Ti atoms.
ErPt2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Er is bonded in a 12-coordinate geometry to twelve equivalent Pt atoms. All Er–Pt bond lengths are 3.18 Å. Pt is bonded to six equivalent Er and six equivalent Pt atoms to form a mixture of face, edge, and corner-sharing PtEr6Pt6 cuboctahedra. All Pt–Pt bond lengths are 2.71 Å.
ErCo2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Er is bonded in a 12-coordinate geometry to twelve equivalent Co atoms. All Er–Co bond lengths are 2.95 Å. Co is bonded to six equivalent Er and six equivalent Co atoms to form a mixture of edge, face, and corner-sharing CoEr6Co6 cuboctahedra. All Co–Co bond lengths are 2.52 Å.
ErSmRh2 is Heusler structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Er is bonded in a body-centered cubic geometry to eight equivalent Rh atoms. All Er–Rh bond lengths are 2.99 Å. Sm is bonded in a body-centered cubic geometry to eight equivalent Rh atoms. All Sm–Rh bond lengths are 2.99 Å. Rh is bonded in a body-centered cubic geometry to four equivalent Er and four equivalent Sm atoms.