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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Cs2TlCl5 by Materials Project

Cs2TlCl5 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Cs1+ sites. In the first Cs1+ site, Cs1+ is bonded in a 10-coordinate geometry to ten Cl1- atoms. There are a spread of Cs–Cl bond distances ranging from 3.63–3.82 Å. In the second Cs1+ site, Cs1+ is bonded in a distorted q6 geometry to ten Cl1- atoms. There are a spread of Cs–Cl bond distances ranging from 3.62–3.86 Å. Tl3+ is bonded to six Cl1- atoms to form corner-sharing TlCl6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of Tl–Cl bond distances ranging from 2.54–2.84 Å. There are four inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded to four Cs1+ and two equivalent Tl3+ atoms to form distorted face-sharing ClCs4Tl2 octahedra. In the second Cl1- site, Cl1- is bonded in a distorted single-bond geometry to four Cs1+ and one Tl3+ atom. In the third Cl1- site, Cl1- is bonded in a 1-coordinate geometry to four Cs1+ and one Tl3+ atom. In the fourth Cl1- site, Cl1- is bonded in a distorted single-bond geometry to four Cs1+ and one Tl3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cs3Tl2Cl9 by Materials Project

Cs3Tl2Cl9 crystallizes in the trigonal R-3c space group. The structure is three-dimensional. Cs1+ is bonded to twelve Cl1- atoms to form CsCl12 cuboctahedra that share corners with six equivalent CsCl12 cuboctahedra, corners with four equivalent TlCl6 octahedra, faces with eight equivalent CsCl12 cuboctahedra, and faces with four equivalent TlCl6 octahedra. The corner-sharing octahedra tilt angles range from 10–30°. There are a spread of Cs–Cl bond distances ranging from 3.73–3.96 Å. Tl3+ is bonded to six Cl1- atoms to form distorted TlCl6 octahedra that share corners with six equivalent CsCl12 cuboctahedra, faces with six equivalent CsCl12 cuboctahedra, and a faceface with one TlCl6 octahedra. There are three shorter (2.54 Å) and three longer (2.78 Å) Tl–Cl bond lengths. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a distorted single-bond geometry to four equivalent Cs1+ and one Tl3+ atom. In the second Cl1- site, Cl1- is bonded in a distorted L-shaped geometry to four equivalent Cs1+ and two equivalent Tl3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CsTlCl3 by Materials Project

CsTlCl3 is (Cubic) Perovskite structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. Cs is bonded to twelve Cl atoms to form CsCl12 cuboctahedra that share corners with twelve equivalent CsCl12 cuboctahedra, faces with six equivalent CsCl12 cuboctahedra, and faces with eight equivalent TlCl6 octahedra. There are a spread of Cs–Cl bond distances ranging from 3.89–4.00 Å. Tl is bonded to six Cl atoms to form TlCl6 octahedra that share corners with six equivalent TlCl6 octahedra and faces with eight equivalent CsCl12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–2°. All Tl–Cl bond lengths are 2.79 Å. There are three inequivalent Cl sites. In the first Cl site, Cl is bonded to four equivalent Cs and two equivalent Tl atoms to form a mixture of distorted edge, face, and corner-sharing ClCs4Tl2 octahedra. The corner-sharing octahedra tilt angles range from 1–61°. In the second Cl site, Cl is bonded to four equivalent Cs and two equivalent Tl atoms to form a mixture of distorted edge, face, and corner-sharing ClCs4Tl2 octahedra. The corner-sharing octahedra tilt angles range from 1–61°. In the third Cl site, Cl is bonded to four equivalent Cs and two equivalent Tl atoms to form a mixture of distorted edge, face, and corner-sharing ClCs4Tl2 octahedra. The corner-sharing octahedra tilt angles range from 0–61°.

36 MATERIALS SCIENCE↗