Search NASA⌕ Search

SEARCH · Search NASA

Results for “Ni-Th”

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.

5 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on ThNi5 by Materials Project

ThNi5 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Th is bonded in a distorted hexagonal planar geometry to eighteen Ni atoms. There are six shorter (2.84 Å) and twelve longer (3.17 Å) Th–Ni bond lengths. There are two inequivalent Ni sites. In the first Ni site, Ni is bonded to three equivalent Th and six equivalent Ni atoms to form distorted NiTh3Ni6 cuboctahedra that share corners with twenty-seven NiTh3Ni6 cuboctahedra, edges with twelve equivalent NiTh4Ni8 cuboctahedra, and faces with eleven NiTh3Ni6 cuboctahedra. All Ni–Ni bond lengths are 2.45 Å. In the second Ni site, Ni is bonded to four equivalent Th and eight Ni atoms to form a mixture of corner, edge, and face-sharing NiTh4Ni8 cuboctahedra. All Ni–Ni bond lengths are 2.46 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Th2Ni17 by Materials Project

Th2Ni17 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Th sites. In the first Th site, Th is bonded in a 12-coordinate geometry to eighteen Ni atoms. There are a spread of Th–Ni bond distances ranging from 2.94–3.23 Å. In the second Th site, Th is bonded in a 2-coordinate geometry to twenty Ni atoms. There are a spread of Th–Ni bond distances ranging from 2.84–3.14 Å. There are four inequivalent Ni sites. In the first Ni site, Ni is bonded in a 2-coordinate geometry to one Th and thirteen Ni atoms. There are a spread of Ni–Ni bond distances ranging from 2.39–2.71 Å. In the second Ni site, Ni is bonded to two equivalent Th and ten Ni atoms to form NiTh2Ni10 cuboctahedra that share corners with fourteen NiTh2Ni10 cuboctahedra, edges with six equivalent NiTh3Ni9 cuboctahedra, and faces with ten NiTh2Ni10 cuboctahedra. There are four shorter (2.39 Å) and four longer (2.42 Å) Ni–Ni bond lengths. In the third Ni site, Ni is bonded in a 12-coordinate geometry to two Th and ten Ni atoms. There are a spread of Ni–Ni bond distances ranging from 2.36–2.54 Å. In the fourth Ni site, Ni is bonded to three Th and nine Ni atoms to form a mixture of distorted corner, edge, and face-sharing NiTh3Ni9 cuboctahedra. Both Ni–Ni bond lengths are 2.41 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ThNi by Materials Project

ThNi crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Th sites. In the first Th site, Th is bonded in a 7-coordinate geometry to seven Ni atoms. There are a spread of Th–Ni bond distances ranging from 2.91–3.05 Å. In the second Th site, Th is bonded in a 7-coordinate geometry to seven Ni atoms. There are a spread of Th–Ni bond distances ranging from 2.91–3.06 Å. There are two inequivalent Ni sites. In the first Ni site, Ni is bonded in a 9-coordinate geometry to seven Th and two equivalent Ni atoms. Both Ni–Ni bond lengths are 2.71 Å. In the second Ni site, Ni is bonded in a 9-coordinate geometry to seven Th and two equivalent Ni atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Th2Ni7 by Materials Project

Th2Ni7 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Th sites. In the first Th site, Th is bonded in a 6-coordinate geometry to eighteen Ni atoms. There are a spread of Th–Ni bond distances ranging from 2.88–3.34 Å. In the second Th site, Th is bonded in a 12-coordinate geometry to twelve Ni atoms. There are a spread of Th–Ni bond distances ranging from 2.82–3.24 Å. There are five inequivalent Ni sites. In the first Ni site, Ni is bonded in a 12-coordinate geometry to three equivalent Th and nine Ni atoms. There are a spread of Ni–Ni bond distances ranging from 2.48–2.87 Å. In the second Ni site, Ni is bonded to four equivalent Th and eight Ni atoms to form a mixture of corner, edge, and face-sharing NiTh4Ni8 cuboctahedra. There are four shorter (2.49 Å) and two longer (2.50 Å) Ni–Ni bond lengths. In the third Ni site, Ni is bonded to five Th and seven Ni atoms to form a mixture of distorted corner, edge, and face-sharing NiTh5Ni7 cuboctahedra. There are a spread of Ni–Ni bond distances ranging from 2.48–2.56 Å. In the fourth Ni site, Ni is bonded to six equivalent Th and six equivalent Ni atoms to form NiTh6Ni6 cuboctahedra that share corners with twelve equivalent NiTh5Ni7 cuboctahedra, edges with six equivalent NiTh6Ni6 cuboctahedra, and faces with eighteen equivalent NiTh5Ni7 cuboctahedra. In the fifth Ni site, Ni is bonded in a 12-coordinate geometry to three equivalent Th and nine Ni atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Th3Ni by Materials Project

Th3Ni is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Th sites. In the first Th site, Th is bonded to eight Th and four equivalent Ni atoms to form distorted ThTh8Ni4 cuboctahedra that share corners with twelve equivalent ThTh8Ni4 cuboctahedra, edges with eight equivalent ThTh8Ni4 cuboctahedra, edges with eight equivalent NiTh12 cuboctahedra, faces with four equivalent NiTh12 cuboctahedra, and faces with ten equivalent ThTh8Ni4 cuboctahedra. There are four shorter (3.28 Å) and four longer (3.39 Å) Th–Th bond lengths. All Th–Ni bond lengths are 3.39 Å. In the second Th site, Th is bonded in a distorted square co-planar geometry to eight equivalent Th and four equivalent Ni atoms. All Th–Ni bond lengths are 3.28 Å. Ni is bonded to twelve Th atoms to form NiTh12 cuboctahedra that share corners with four equivalent NiTh12 cuboctahedra, edges with eight equivalent NiTh12 cuboctahedra, edges with sixteen equivalent ThTh8Ni4 cuboctahedra, faces with four equivalent NiTh12 cuboctahedra, and faces with eight equivalent ThTh8Ni4 cuboctahedra.

36 MATERIALS SCIENCE↗