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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on CsAuBr3 by Materials Project

CsAuBr3 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Cs1+ is bonded to twelve Br1- atoms to form CsBr12 cuboctahedra that share corners with twelve equivalent CsBr12 cuboctahedra, faces with six equivalent CsBr12 cuboctahedra, and faces with eight AuBr6 octahedra. There are four shorter (3.99 Å) and eight longer (4.07 Å) Cs–Br bond lengths. There are two inequivalent Au2+ sites. In the first Au2+ site, Au2+ is bonded to six Br1- atoms to form distorted AuBr6 octahedra that share corners with six equivalent AuBr6 octahedra and faces with eight equivalent CsBr12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.52 Å) and two longer (3.40 Å) Au–Br bond lengths. In the second Au2+ site, Au2+ is bonded to six Br1- atoms to form AuBr6 octahedra that share corners with six equivalent AuBr6 octahedra and faces with eight equivalent CsBr12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.46 Å) and four longer (3.09 Å) Au–Br bond lengths. There are two inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted single-bond geometry to four equivalent Cs1+ and two Au2+ atoms. In the second Br1- site, Br1- is bonded in a 6-coordinate geometry to four equivalent Cs1+ and two Au2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs3Au2Br11 by Materials Project

Cs3Au2Br11 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 11-coordinate geometry to eleven Br1- atoms. There are a spread of Cs–Br bond distances ranging from 3.77–4.25 Å. In the second Cs1+ site, Cs1+ is bonded in a 10-coordinate geometry to ten Br1- atoms. There are a spread of Cs–Br bond distances ranging from 3.72–4.18 Å. In the third Cs1+ site, Cs1+ is bonded in a 10-coordinate geometry to ten Br1- atoms. There are a spread of Cs–Br bond distances ranging from 3.72–4.23 Å. There are two inequivalent Au4+ sites. In the first Au4+ site, Au4+ is bonded in a rectangular see-saw-like geometry to four Br1- atoms. All Au–Br bond lengths are 2.48 Å. In the second Au4+ site, Au4+ is bonded in a rectangular see-saw-like geometry to four Br1- atoms. There are a spread of Au–Br bond distances ranging from 2.47–2.49 Å. There are eleven inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a 1-coordinate geometry to three Cs1+ and one Au4+ atom. In the second Br1- site, Br1- is bonded in a 4-coordinate geometry to three Cs1+ and one Br1- atom. The Br–Br bond length is 2.58 Å. In the third Br1- site, Br1- is bonded in a 1-coordinate geometry to three Cs1+ and one Au4+ atom. In the fourth Br1- site, Br1- is bonded in a 3-coordinate geometry to two Cs1+ and one Br1- atom. The Br–Br bond length is 2.59 Å. In the fifth Br1- site, Br1- is bonded in a 1-coordinate geometry to three Cs1+ and one Au4+ atom. In the sixth Br1- site, Br1- is bonded in a 4-coordinate geometry to three Cs1+ and one Au4+ atom. In the seventh Br1- site, Br1- is bonded to three Cs1+ and one Au4+ atom to form distorted edge-sharing BrCs3Au tetrahedra. In the eighth Br1- site, Br1- is bonded in a 4-coordinate geometry to three equivalent Cs1+ and one Au4+ atom. In the ninth Br1- site, Br1- is bonded in a 1-coordinate geometry to four Cs1+ and one Au4+ atom. In the tenth Br1- site, Br1- is bonded in a distorted T-shaped geometry to two Cs1+ and one Au4+ atom. In the eleventh Br1- site, Br1- is bonded in a 4-coordinate geometry to two equivalent Cs1+ and two Br1- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs3AuBr6 by Materials Project

Cs3AuBr6 is (Cubic) Perovskite-like structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded to twelve equivalent Br1- atoms to form CsBr12 cuboctahedra that share corners with twelve equivalent CsBr12 cuboctahedra, faces with six equivalent CsBr12 cuboctahedra, faces with four equivalent CsBr6 octahedra, and faces with four equivalent AuBr6 octahedra. All Cs–Br bond lengths are 4.26 Å. In the second Cs1+ site, Cs1+ is bonded to six equivalent Br1- atoms to form CsBr6 octahedra that share corners with six equivalent AuBr6 octahedra and faces with eight equivalent CsBr12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Cs–Br bond lengths are 3.34 Å. Au3+ is bonded to six equivalent Br1- atoms to form AuBr6 octahedra that share corners with six equivalent CsBr6 octahedra and faces with eight equivalent CsBr12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Au–Br bond lengths are 2.67 Å. Br1- is bonded in a distorted linear geometry to five Cs1+ and one Au3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs2AuBr by Materials Project

Cs2AuBr crystallizes in the orthorhombic Immm space group. The structure is one-dimensional and consists of two Cs2AuBr ribbons oriented in the (0, 1, 0) direction. Cs1+ is bonded in a linear geometry to one Au1- and one Br1- atom. The Cs–Au bond length is 3.36 Å. The Cs–Br bond length is 3.35 Å. Au1- is bonded in a linear geometry to two equivalent Cs1+ atoms. Br1- is bonded in a linear geometry to two equivalent Cs1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CsAuBr3 by Materials Project

CsAuBr3 is (Cubic) Perovskite structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Cs1+ is bonded to twelve equivalent Br1- atoms to form CsBr12 cuboctahedra that share corners with twelve equivalent CsBr12 cuboctahedra, faces with six equivalent CsBr12 cuboctahedra, and faces with eight equivalent AuBr6 octahedra. All Cs–Br bond lengths are 3.87 Å. Au2+ is bonded to six equivalent Br1- atoms to form AuBr6 octahedra that share corners with six equivalent AuBr6 octahedra and faces with eight equivalent CsBr12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Au–Br bond lengths are 2.74 Å. Br1- is bonded to four equivalent Cs1+ and two equivalent Au2+ atoms to form a mixture of distorted edge, face, and corner-sharing BrCs4Au2 octahedra. The corner-sharing octahedra tilt angles range from 0–60°.

36 MATERIALS SCIENCE↗