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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on RbCr5Te8 by Materials Project

RbCr5Te8 is Orthorhombic Perovskite-like structured and crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Rb1+ is bonded in a distorted q6 geometry to ten Te2- atoms. There are a spread of Rb–Te bond distances ranging from 3.84–4.07 Å. There are three inequivalent Cr3+ sites. In the first Cr3+ site, Cr3+ is bonded to six Te2- atoms to form a mixture of edge and corner-sharing CrTe6 octahedra. The corner-sharing octahedral tilt angles are 50°. There are two shorter (2.73 Å) and four longer (2.75 Å) Cr–Te bond lengths. In the second Cr3+ site, Cr3+ is bonded to six Te2- atoms to form a mixture of edge, face, and corner-sharing CrTe6 octahedra. The corner-sharing octahedra tilt angles range from 49–51°. There are a spread of Cr–Te bond distances ranging from 2.71–2.87 Å. In the third Cr3+ site, Cr3+ is bonded to six Te2- atoms to form a mixture of edge, face, and corner-sharing CrTe6 octahedra. The corner-sharing octahedra tilt angles range from 49–51°. There are a spread of Cr–Te bond distances ranging from 2.70–2.84 Å. There are four inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 4-coordinate geometry to one Rb1+ and four Cr3+ atoms. In the second Te2- site, Te2- is bonded in a 5-coordinate geometry to two equivalent Rb1+ and three Cr3+ atoms. In the third Te2- site, Te2- is bonded in a 3-coordinate geometry to two equivalent Rb1+ and three equivalent Cr3+ atoms. In the fourth Te2- site, Te2- is bonded in a 5-coordinate geometry to five Cr3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Rb(Cr5Te8)3 by Materials Project

Rb(Cr5Te8)3 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Rb1+ is bonded in a distorted q6 geometry to ten Te2- atoms. There are a spread of Rb–Te bond distances ranging from 3.83–4.06 Å. There are eight inequivalent Cr+3.13+ sites. In the first Cr+3.13+ site, Cr+3.13+ is bonded to six Te2- atoms to form a mixture of edge, face, and corner-sharing CrTe6 octahedra. The corner-sharing octahedra tilt angles range from 50–51°. There are a spread of Cr–Te bond distances ranging from 2.68–2.86 Å. In the second Cr+3.13+ site, Cr+3.13+ is bonded to six Te2- atoms to form a mixture of edge, face, and corner-sharing CrTe6 octahedra. The corner-sharing octahedra tilt angles range from 50–51°. There are a spread of Cr–Te bond distances ranging from 2.68–2.86 Å. In the third Cr+3.13+ site, Cr+3.13+ is bonded to six Te2- atoms to form a mixture of edge, face, and corner-sharing CrTe6 octahedra. The corner-sharing octahedra tilt angles range from 50–51°. There are a spread of Cr–Te bond distances ranging from 2.68–2.86 Å. In the fourth Cr+3.13+ site, Cr+3.13+ is bonded to six Te2- atoms to form a mixture of edge, face, and corner-sharing CrTe6 octahedra. The corner-sharing octahedra tilt angles range from 49–51°. There are a spread of Cr–Te bond distances ranging from 2.70–2.83 Å. In the fifth Cr+3.13+ site, Cr+3.13+ is bonded to six Te2- atoms to form a mixture of edge, face, and corner-sharing CrTe6 octahedra. The corner-sharing octahedra tilt angles range from 49–51°. There are a spread of Cr–Te bond distances ranging from 2.68–2.81 Å. In the sixth Cr+3.13+ site, Cr+3.13+ is bonded to six Te2- atoms to form a mixture of edge, face, and corner-sharing CrTe6 octahedra. The corner-sharing octahedra tilt angles range from 49–51°. There are a spread of Cr–Te bond distances ranging from 2.69–2.82 Å. In the seventh Cr+3.13+ site, Cr+3.13+ is bonded to six Te2- atoms to form a mixture of edge and corner-sharing CrTe6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are a spread of Cr–Te bond distances ranging from 2.73–2.75 Å. In the eighth Cr+3.13+ site, Cr+3.13+ is bonded to six Te2- atoms to form a mixture of edge and corner-sharing CrTe6 octahedra. The corner-sharing octahedral tilt angles are 49°. There are two shorter (2.73 Å) and four longer (2.74 Å) Cr–Te bond lengths. There are twelve inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a rectangular see-saw-like geometry to four Cr+3.13+ atoms. In the second Te2- site, Te2- is bonded in a 4-coordinate geometry to one Rb1+ and four Cr+3.13+ atoms. In the third Te2- site, Te2- is bonded in a rectangular see-saw-like geometry to four Cr+3.13+ atoms. In the fourth Te2- site, Te2- is bonded in a 5-coordinate geometry to five Cr+3.13+ atoms. In the fifth Te2- site, Te2- is bonded in a 5-coordinate geometry to five Cr+3.13+ atoms. In the sixth Te2- site, Te2- is bonded in a 5-coordinate geometry to five Cr+3.13+ atoms. In the seventh Te2- site, Te2- is bonded in a 4-coordinate geometry to one Rb1+ and three Cr+3.13+ atoms. In the eighth Te2- site, Te2- is bonded in a 4-coordinate geometry to one Rb1+ and three Cr+3.13+ atoms. In the ninth Te2- site, Te2- is bonded in a 3-coordinate geometry to three Cr+3.13+ atoms. In the tenth Te2- site, Te2- is bonded in a distorted rectangular see-saw-like geometry to one Rb1+ and three Cr+3.13+ atoms. In the eleventh Te2- site, Te2- is bonded in a 3-coordinate geometry to three Cr+3.13+ atoms. In the twelfth Te2- site, Te2- is bonded in a distorted rectangular see-saw-like geometry to one Rb1+ and three Cr+3.13+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Rb3(Cr5Te8)4 by Materials Project

Rb3(Cr5Te8)4 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a 10-coordinate geometry to two Cr+3.05+ and eight Te2- atoms. There are one shorter (3.03 Å) and one longer (3.06 Å) Rb–Cr bond lengths. There are a spread of Rb–Te bond distances ranging from 3.48–4.05 Å. In the second Rb1+ site, Rb1+ is bonded in a 10-coordinate geometry to two equivalent Cr+3.05+ and eight Te2- atoms. Both Rb–Cr bond lengths are 3.05 Å. There are a spread of Rb–Te bond distances ranging from 3.52–3.95 Å. There are ten inequivalent Cr+3.05+ sites. In the first Cr+3.05+ site, Cr+3.05+ is bonded to one Rb1+ and five Te2- atoms to form distorted CrRbTe5 octahedra that share a cornercorner with one CrRbTe5 octahedra and an edgeedge with one CrTe5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 0°. There are a spread of Cr–Te bond distances ranging from 2.65–3.09 Å. In the second Cr+3.05+ site, Cr+3.05+ is bonded to one Rb1+ and five Te2- atoms to form a mixture of distorted edge and corner-sharing CrRbTe5 octahedra. The corner-sharing octahedral tilt angles are 4°. There are a spread of Cr–Te bond distances ranging from 2.65–3.10 Å. In the third Cr+3.05+ site, Cr+3.05+ is bonded to five Te2- atoms to form distorted edge-sharing CrTe5 trigonal bipyramids. There are a spread of Cr–Te bond distances ranging from 2.66–3.11 Å. In the fourth Cr+3.05+ site, Cr+3.05+ is bonded to one Rb1+ and five Te2- atoms to form a mixture of distorted edge and corner-sharing CrRbTe5 octahedra. The corner-sharing octahedral tilt angles are 4°. There are a spread of Cr–Te bond distances ranging from 2.66–3.09 Å. In the fifth Cr+3.05+ site, Cr+3.05+ is bonded in a distorted linear geometry to two Te2- atoms. There is one shorter (1.93 Å) and one longer (1.96 Å) Cr–Te bond length. In the sixth Cr+3.05+ site, Cr+3.05+ is bonded in a distorted linear geometry to two Te2- atoms. There is one shorter (1.93 Å) and one longer (1.96 Å) Cr–Te bond length. In the seventh Cr+3.05+ site, Cr+3.05+ is bonded in a distorted linear geometry to two Te2- atoms. There is one shorter (1.92 Å) and one longer (1.97 Å) Cr–Te bond length. In the eighth Cr+3.05+ site, Cr+3.05+ is bonded in a distorted linear geometry to two Te2- atoms. There is one shorter (1.93 Å) and one longer (1.97 Å) Cr–Te bond length. In the ninth Cr+3.05+ site, Cr+3.05+ is bonded in a distorted linear geometry to two Te2- atoms. Both Cr–Te bond lengths are 1.87 Å. In the tenth Cr+3.05+ site, Cr+3.05+ is bonded in a distorted linear geometry to two Te2- atoms. There is one shorter (1.86 Å) and one longer (1.88 Å) Cr–Te bond length. There are sixteen inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 1-coordinate geometry to one Rb1+ and two Cr+3.05+ atoms. In the second Te2- site, Te2- is bonded in a 1-coordinate geometry to one Rb1+ and two Cr+3.05+ atoms. In the third Te2- site, Te2- is bonded in a 1-coordinate geometry to one Rb1+ and two Cr+3.05+ atoms. In the fourth Te2- site, Te2- is bonded in a distorted single-bond geometry to two Cr+3.05+ atoms. In the fifth Te2- site, Te2- is bonded in a distorted single-bond geometry to one Rb1+ and two Cr+3.05+ atoms. In the sixth Te2- site, Te2- is bonded in a distorted single-bond geometry to one Rb1+ and two Cr+3.05+ atoms. In the seventh Te2- site, Te2- is bonded in a distorted single-bond geometry to one Rb1+ and two Cr+3.05+ atoms. In the eighth Te2- site, Te2- is bonded in a distorted single-bond geometry to two Cr+3.05+ atoms. In the ninth Te2- site, Te2- is bonded in a distorted single-bond geometry to two Cr+3.05+ atoms. In the tenth Te2- site, Te2- is bonded in a distorted single-bond geometry to two Cr+3.05+ atoms. In the eleventh Te2- site, Te2- is bonded in a distorted single-bond geometry to two Cr+3.05+ atoms. In the twelfth Te2- site, Te2- is bonded in a distorted single-bond geometry to two Cr+3.05+ atoms. In the thirteenth Te2- site, Te2- is bonded in a 2-coordinate geometry to two Rb1+ and two Cr+3.05+ atoms. In the fourteenth Te2- site, Te2- is bonded in a 2-coordinate geometry to two Rb1+ and two equivalent Cr+3.05+ atoms. In the fifteenth Te2- site, Te2- is bonded in a 2-coordinate geometry to one Rb1+ and two Cr+3.05+ atoms. In the sixteenth Te2- site, Te2- is bonded in a 2-coordinate geometry to one Rb1+ and two equivalent Cr+3.05+ atoms.

36 MATERIALS SCIENCE↗