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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on NaTlO2 by Materials Project

NaTlO2 is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Na1+ is bonded to six equivalent O2- atoms to form NaO6 octahedra that share corners with six equivalent TlO6 octahedra, edges with six equivalent NaO6 octahedra, and edges with six equivalent TlO6 octahedra. The corner-sharing octahedral tilt angles are 5°. All Na–O bond lengths are 2.50 Å. Tl3+ is bonded to six equivalent O2- atoms to form TlO6 octahedra that share corners with six equivalent NaO6 octahedra, edges with six equivalent NaO6 octahedra, and edges with six equivalent TlO6 octahedra. The corner-sharing octahedral tilt angles are 5°. All Tl–O bond lengths are 2.34 Å. O2- is bonded to three equivalent Na1+ and three equivalent Tl3+ atoms to form a mixture of corner and edge-sharing ONa3Tl3 octahedra. The corner-sharing octahedral tilt angles are 0°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NaTlO2 by Materials Project

NaTlO2 is Caswellsilverite-like structured and crystallizes in the tetragonal I4_1/amd space group. The structure is three-dimensional. Na1+ is bonded to six O2- atoms to form NaO6 octahedra that share corners with two equivalent TlO6 octahedra, corners with four equivalent NaO6 octahedra, edges with four equivalent NaO6 octahedra, and edges with eight equivalent TlO6 octahedra. The corner-sharing octahedra tilt angles range from 0–9°. There are four shorter (2.45 Å) and two longer (2.57 Å) Na–O bond lengths. Tl3+ is bonded to six equivalent O2- atoms to form TlO6 octahedra that share corners with two equivalent NaO6 octahedra, corners with four equivalent TlO6 octahedra, edges with four equivalent TlO6 octahedra, and edges with eight equivalent NaO6 octahedra. The corner-sharing octahedra tilt angles range from 0–9°. There are two shorter (2.17 Å) and four longer (2.45 Å) Tl–O bond lengths. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded to three equivalent Na1+ and three equivalent Tl3+ atoms to form a mixture of corner and edge-sharing ONa3Tl3 octahedra. The corner-sharing octahedra tilt angles range from 0–9°. There are two shorter (2.45 Å) and one longer (2.57 Å) O–Na bond lengths. There are one shorter (2.17 Å) and two longer (2.45 Å) O–Tl bond lengths. In the second O2- site, O2- is bonded to three equivalent Na1+ and three equivalent Tl3+ atoms to form a mixture of corner and edge-sharing ONa3Tl3 octahedra. The corner-sharing octahedra tilt angles range from 0–9°. There are one shorter (2.17 Å) and two longer (2.45 Å) O–Tl bond lengths. In the third O2- site, O2- is bonded to three equivalent Na1+ and three equivalent Tl3+ atoms to form a mixture of corner and edge-sharing ONa3Tl3 octahedra. The corner-sharing octahedra tilt angles range from 0–9°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NaTlO2 by Materials Project

NaTlO2 is Caswellsilverite-like structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Na1+ is bonded to six O2- atoms to form NaO6 octahedra that share corners with six equivalent NaO6 octahedra, edges with four equivalent NaO6 octahedra, and edges with eight equivalent TlO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.26 Å) and four longer (2.44 Å) Na–O bond lengths. Tl3+ is bonded to six O2- atoms to form TlO6 octahedra that share corners with six equivalent TlO6 octahedra, edges with four equivalent TlO6 octahedra, and edges with eight equivalent NaO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.26 Å) and four longer (2.44 Å) Tl–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Na1+ and four equivalent Tl3+ atoms to form a mixture of corner and edge-sharing ONa2Tl4 octahedra. The corner-sharing octahedral tilt angles are 0°. In the second O2- site, O2- is bonded to four equivalent Na1+ and two equivalent Tl3+ atoms to form ONa4Tl2 octahedra that share corners with six equivalent ONa4Tl2 octahedra and edges with twelve ONa2Tl4 octahedra. The corner-sharing octahedral tilt angles are 0°.

36 MATERIALS SCIENCE↗