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.
TlSn crystallizes in the monoclinic Cm space group. The structure is two-dimensional and consists of one TlSn sheet oriented in the (2, 0, -1) direction. Tl is bonded in a 9-coordinate geometry to three equivalent Sn atoms. There are one shorter (3.31 Å) and two longer (3.39 Å) Tl–Sn bond lengths. Sn is bonded in a 11-coordinate geometry to three equivalent Tl atoms.
TlSn is Tetraauricupride structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Tl is bonded to four equivalent Tl and eight equivalent Sn atoms to form TlTl4Sn8 cuboctahedra that share corners with twelve equivalent TlTl4Sn8 cuboctahedra, edges with eight equivalent TlTl4Sn8 cuboctahedra, edges with sixteen equivalent SnTl8Sn4 cuboctahedra, faces with eight equivalent SnTl8Sn4 cuboctahedra, and faces with ten equivalent TlTl4Sn8 cuboctahedra. All Tl–Tl bond lengths are 3.35 Å. All Tl–Sn bond lengths are 3.55 Å. Sn is bonded to eight equivalent Tl and four equivalent Sn atoms to form SnTl8Sn4 cuboctahedra that share corners with twelve equivalent SnTl8Sn4 cuboctahedra, edges with eight equivalent SnTl8Sn4 cuboctahedra, edges with sixteen equivalent TlTl4Sn8 cuboctahedra, faces with eight equivalent TlTl4Sn8 cuboctahedra, and faces with ten equivalent SnTl8Sn4 cuboctahedra. All Sn–Sn bond lengths are 3.35 Å.
Ce2(TlSn)3 crystallizes in the orthorhombic Pmmm space group. The structure is three-dimensional. Ce is bonded to six Tl and six Sn atoms to form CeTl6Sn6 cuboctahedra that share corners with twelve equivalent CeTl6Sn6 cuboctahedra, edges with twelve TlCe4Tl4Sn4 cuboctahedra, faces with six equivalent CeTl6Sn6 cuboctahedra, and faces with six TlCe4Tl4Sn4 cuboctahedra. There are a spread of Ce–Tl bond distances ranging from 3.35–3.50 Å. There are two shorter (3.31 Å) and four longer (3.38 Å) Ce–Sn bond lengths. There are three inequivalent Tl sites. In the first Tl site, Tl is bonded to four equivalent Ce, four equivalent Tl, and four equivalent Sn atoms to form TlCe4Tl4Sn4 cuboctahedra that share corners with four equivalent TlCe4Tl4Sn4 cuboctahedra, edges with eight equivalent CeTl6Sn6 cuboctahedra, edges with eight equivalent TlCe4Sn8 cuboctahedra, faces with four equivalent CeTl6Sn6 cuboctahedra, and faces with eight TlCe4Tl4Sn4 cuboctahedra. All Tl–Tl bond lengths are 3.37 Å. All Tl–Sn bond lengths are 3.45 Å. In the second Tl site, Tl is bonded to four equivalent Ce and eight Sn atoms to form TlCe4Sn8 cuboctahedra that share corners with twelve TlCe4Sn8 cuboctahedra, edges with eight equivalent CeTl6Sn6 cuboctahedra, edges with eight equivalent TlCe4Tl4Sn4 cuboctahedra, faces with four equivalent CeTl6Sn6 cuboctahedra, and faces with six TlCe4Sn8 cuboctahedra. There are four shorter (3.36 Å) and four longer (3.37 Å) Tl–Sn bond lengths. In the third Tl site, Tl is bonded to four equivalent Ce, four equivalent Tl, and four equivalent Sn atoms to form TlCe4Tl4Sn4 cuboctahedra that share corners with twelve TlCe4Sn8 cuboctahedra, edges with eight equivalent CeTl6Sn6 cuboctahedra, faces with four equivalent CeTl6Sn6 cuboctahedra, and faces with ten TlCe4Tl4Sn4 cuboctahedra. All Tl–Sn bond lengths are 3.41 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded in a 12-coordinate geometry to four equivalent Ce, six Tl, and two equivalent Sn atoms. Both Sn–Sn bond lengths are 3.40 Å. In the second Sn site, Sn is bonded in a 12-coordinate geometry to four equivalent Ce, four equivalent Tl, and four equivalent Sn atoms.
La2(TlSn)3 is beta Cu3Ti-derived structured and crystallizes in the orthorhombic Pmmm space group. The structure is three-dimensional. La is bonded to six Tl and six Sn atoms to form LaTl6Sn6 cuboctahedra that share corners with twelve equivalent LaTl6Sn6 cuboctahedra, edges with twelve TlLa4Tl4Sn4 cuboctahedra, edges with twelve SnLa4Tl6Sn2 cuboctahedra, faces with six equivalent LaTl6Sn6 cuboctahedra, faces with six TlLa4Tl4Sn4 cuboctahedra, and faces with six SnLa4Tl6Sn2 cuboctahedra. There are a spread of La–Tl bond distances ranging from 3.38–3.49 Å. There are two shorter (3.38 Å) and four longer (3.45 Å) La–Sn bond lengths. There are three inequivalent Tl sites. In the first Tl site, Tl is bonded to four equivalent La, four equivalent Tl, and four equivalent Sn atoms to form distorted TlLa4Tl4Sn4 cuboctahedra that share corners with four equivalent TlLa4Tl4Sn4 cuboctahedra, corners with eight equivalent SnLa4Tl4Sn4 cuboctahedra, edges with eight equivalent LaTl6Sn6 cuboctahedra, edges with eight equivalent TlLa4Sn8 cuboctahedra, edges with eight equivalent SnLa4Tl6Sn2 cuboctahedra, faces with four equivalent LaTl6Sn6 cuboctahedra, faces with six SnLa4Tl6Sn2 cuboctahedra, and faces with eight TlLa4Tl4Sn4 cuboctahedra. All Tl–Tl bond lengths are 3.45 Å. All Tl–Sn bond lengths are 3.47 Å. In the second Tl site, Tl is bonded to four equivalent La and eight Sn atoms to form TlLa4Sn8 cuboctahedra that share corners with twelve TlLa4Sn8 cuboctahedra, edges with eight equivalent LaTl6Sn6 cuboctahedra, edges with eight equivalent TlLa4Tl4Sn4 cuboctahedra, edges with eight equivalent SnLa4Tl6Sn2 cuboctahedra, faces with four equivalent LaTl6Sn6 cuboctahedra, faces with six TlLa4Sn8 cuboctahedra, and faces with eight SnLa4Tl6Sn2 cuboctahedra. There are four shorter (3.40 Å) and four longer (3.45 Å) Tl–Sn bond lengths. In the third Tl site, Tl is bonded to four equivalent La, four equivalent Tl, and four equivalent Sn atoms to form distorted TlLa4Tl4Sn4 cuboctahedra that share corners with twelve TlLa4Sn8 cuboctahedra, edges with eight equivalent LaTl6Sn6 cuboctahedra, edges with sixteen SnLa4Tl6Sn2 cuboctahedra, faces with four equivalent LaTl6Sn6 cuboctahedra, faces with four equivalent SnLa4Tl6Sn2 cuboctahedra, and faces with ten TlLa4Tl4Sn4 cuboctahedra. All Tl–Sn bond lengths are 3.47 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded to four equivalent La, six Tl, and two equivalent Sn atoms to form distorted SnLa4Tl6Sn2 cuboctahedra that share corners with twelve equivalent SnLa4Tl6Sn2 cuboctahedra, edges with four equivalent SnLa4Tl4Sn4 cuboctahedra, edges with eight equivalent LaTl6Sn6 cuboctahedra, edges with twelve TlLa4Tl4Sn4 cuboctahedra, faces with four equivalent LaTl6Sn6 cuboctahedra, faces with six TlLa4Tl4Sn4 cuboctahedra, and faces with eight SnLa4Tl6Sn2 cuboctahedra. Both Sn–Sn bond lengths are 3.40 Å. In the second Sn site, Sn is bonded to four equivalent La, four equivalent Tl, and four equivalent Sn atoms to form distorted SnLa4Tl4Sn4 cuboctahedra that share corners with four equivalent SnLa4Tl4Sn4 cuboctahedra, corners with eight equivalent TlLa4Tl4Sn4 cuboctahedra, edges with eight equivalent LaTl6Sn6 cuboctahedra, edges with eight equivalent TlLa4Tl4Sn4 cuboctahedra, edges with eight equivalent SnLa4Tl6Sn2 cuboctahedra, faces with four equivalent LaTl6Sn6 cuboctahedra, faces with six TlLa4Tl4Sn4 cuboctahedra, and faces with eight SnLa4Tl6Sn2 cuboctahedra.