SEARCH · Engineering Papers
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
TlSe is Tetraauricupride structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Tl1+ is bonded in a body-centered cubic geometry to eight equivalent Se1- atoms. All Tl–Se bond lengths are 3.25 Å. Se1- is bonded in a body-centered cubic geometry to eight equivalent Tl1+ atoms.
TlSe is I4/mcm structured and crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. there are two inequivalent Tl1+ sites. In the first Tl1+ site, Tl1+ is bonded in a 10-coordinate geometry to eight equivalent Se1- atoms. All Tl–Se bond lengths are 3.53 Å. In the second Tl1+ site, Tl1+ is bonded to four equivalent Se1- atoms to form edge-sharing TlSe4 tetrahedra. All Tl–Se bond lengths are 2.73 Å. Se1- is bonded in a 2-coordinate geometry to six Tl1+ atoms.
Tl5Se3 crystallizes in the tetragonal P4/ncc space group. The structure is three-dimensional. there are two inequivalent Tl1+ sites. In the first Tl1+ site, Tl1+ is bonded in a 5-coordinate geometry to five Se+1.67- atoms. There are a spread of Tl–Se bond distances ranging from 3.03–3.56 Å. In the second Tl1+ site, Tl1+ is bonded to six Se+1.67- atoms to form corner-sharing TlSe6 octahedra. The corner-sharing octahedra tilt angles range from 0–40°. There are one shorter (3.17 Å) and five longer (3.24 Å) Tl–Se bond lengths. There are two inequivalent Se+1.67- sites. In the first Se+1.67- site, Se+1.67- is bonded in a 8-coordinate geometry to eight Tl1+ atoms. In the second Se+1.67- site, Se+1.67- is bonded in a 10-coordinate geometry to ten Tl1+ atoms.
Tl5Se3 crystallizes in the tetragonal P4/n space group. The structure is three-dimensional. there are four inequivalent Tl1+ sites. In the first Tl1+ site, Tl1+ is bonded in a 4-coordinate geometry to four Se+1.67- atoms. There are a spread of Tl–Se bond distances ranging from 3.03–3.39 Å. In the second Tl1+ site, Tl1+ is bonded in a 3-coordinate geometry to four Se+1.67- atoms. There are a spread of Tl–Se bond distances ranging from 3.07–3.69 Å. In the third Tl1+ site, Tl1+ is bonded in a 5-coordinate geometry to five Se+1.67- atoms. There are one shorter (2.85 Å) and four longer (3.04 Å) Tl–Se bond lengths. In the fourth Tl1+ site, Tl1+ is bonded in a 5-coordinate geometry to five Se+1.67- atoms. There are one shorter (3.05 Å) and four longer (3.39 Å) Tl–Se bond lengths. There are three inequivalent Se+1.67- sites. In the first Se+1.67- site, Se+1.67- is bonded in a 8-coordinate geometry to eight Tl1+ atoms. In the second Se+1.67- site, Se+1.67- is bonded in a 5-coordinate geometry to five Tl1+ atoms. In the third Se+1.67- site, Se+1.67- is bonded in a 1-coordinate geometry to five Tl1+ atoms.