Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Co-P-U”

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.

3 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on U(CoP)2 by Materials Project

UCo2P2 crystallizes in the tetragonal P4/nmm space group. The structure is three-dimensional. U3+ is bonded in a 4-coordinate geometry to four equivalent Co+1.50+ and nine P3- atoms. All U–Co bond lengths are 2.78 Å. There are a spread of U–P bond distances ranging from 3.15–3.34 Å. There are two inequivalent Co+1.50+ sites. In the first Co+1.50+ site, Co+1.50+ is bonded in a single-bond geometry to one P3- atom. The Co–P bond length is 2.07 Å. In the second Co+1.50+ site, Co+1.50+ is bonded in a 4-coordinate geometry to four equivalent U3+ atoms. There are two inequivalent P3- sites. In the first P3- site, P3- is bonded in a 8-coordinate geometry to four equivalent U3+ and four equivalent P3- atoms. All P–P bond lengths are 2.26 Å. In the second P3- site, P3- is bonded in a distorted single-bond geometry to five equivalent U3+, one Co+1.50+, and four equivalent P3- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on U(CoP)2 by Materials Project

UCo2P2 crystallizes in the tetragonal P4mm space group. The structure is three-dimensional. there are two inequivalent U3+ sites. In the first U3+ site, U3+ is bonded in a 8-coordinate geometry to eight P3- atoms. There are four shorter (2.95 Å) and four longer (2.97 Å) U–P bond lengths. In the second U3+ site, U3+ is bonded in a 8-coordinate geometry to eight P3- atoms. There are four shorter (2.94 Å) and four longer (2.97 Å) U–P bond lengths. There are three inequivalent Co+1.50+ sites. In the first Co+1.50+ site, Co+1.50+ is bonded in a 5-coordinate geometry to five P3- atoms. There are four shorter (2.21 Å) and one longer (2.24 Å) Co–P bond lengths. In the second Co+1.50+ site, Co+1.50+ is bonded in a 5-coordinate geometry to five P3- atoms. There are four shorter (2.21 Å) and one longer (2.22 Å) Co–P bond lengths. In the third Co+1.50+ site, Co+1.50+ is bonded to four P3- atoms to form a mixture of edge and corner-sharing CoP4 tetrahedra. There are two shorter (2.29 Å) and two longer (2.31 Å) Co–P bond lengths. There are three inequivalent P3- sites. In the first P3- site, P3- is bonded in a 9-coordinate geometry to four equivalent U3+ and five Co+1.50+ atoms. In the second P3- site, P3- is bonded in a 4-coordinate geometry to four U3+ and four Co+1.50+ atoms. In the third P3- site, P3- is bonded in a 9-coordinate geometry to four equivalent U3+ and five Co+1.50+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on U2Co12P7 by Materials Project

U2Co12P7 crystallizes in the hexagonal P-6 space group. The structure is three-dimensional. there are two inequivalent U3+ sites. In the first U3+ site, U3+ is bonded to six equivalent P3- atoms to form distorted UP6 pentagonal pyramids that share corners with six equivalent CoP5 square pyramids, corners with twelve CoP4 tetrahedra, edges with twelve CoP4 tetrahedra, and faces with two equivalent UP6 pentagonal pyramids. All U–P bond lengths are 2.86 Å. In the second U3+ site, U3+ is bonded to six equivalent P3- atoms to form distorted UP6 pentagonal pyramids that share corners with six equivalent CoP5 square pyramids, corners with twelve CoP4 tetrahedra, edges with three equivalent CoP5 square pyramids, edges with nine CoP4 tetrahedra, and faces with two equivalent UP6 pentagonal pyramids. All U–P bond lengths are 2.85 Å. There are four inequivalent Co+1.25+ sites. In the first Co+1.25+ site, Co+1.25+ is bonded to four P3- atoms to form CoP4 tetrahedra that share corners with two equivalent UP6 pentagonal pyramids, corners with two equivalent CoP5 square pyramids, corners with twelve CoP4 tetrahedra, edges with three UP6 pentagonal pyramids, edges with two equivalent CoP5 square pyramids, and edges with three CoP4 tetrahedra. There are a spread of Co–P bond distances ranging from 2.22–2.31 Å. In the second Co+1.25+ site, Co+1.25+ is bonded to four P3- atoms to form CoP4 tetrahedra that share corners with two equivalent UP6 pentagonal pyramids, corners with four equivalent CoP5 square pyramids, corners with ten CoP4 tetrahedra, edges with three UP6 pentagonal pyramids, an edgeedge with one CoP5 square pyramid, and edges with four CoP4 tetrahedra. There are one shorter (2.23 Å) and three longer (2.29 Å) Co–P bond lengths. In the third Co+1.25+ site, Co+1.25+ is bonded to four P3- atoms to form CoP4 tetrahedra that share corners with four UP6 pentagonal pyramids, corners with two equivalent CoP5 square pyramids, corners with ten CoP4 tetrahedra, an edgeedge with one UP6 pentagonal pyramid, edges with four equivalent CoP5 square pyramids, and edges with three CoP4 tetrahedra. There are a spread of Co–P bond distances ranging from 2.12–2.24 Å. In the fourth Co+1.25+ site, Co+1.25+ is bonded to five P3- atoms to form distorted CoP5 square pyramids that share corners with four UP6 pentagonal pyramids, corners with four equivalent CoP5 square pyramids, corners with eight CoP4 tetrahedra, an edgeedge with one UP6 pentagonal pyramid, edges with four equivalent CoP5 square pyramids, and edges with seven CoP4 tetrahedra. There are a spread of Co–P bond distances ranging from 2.20–2.53 Å. There are three inequivalent P3- sites. In the first P3- site, P3- is bonded in a 9-coordinate geometry to two equivalent U3+ and seven Co+1.25+ atoms. In the second P3- site, P3- is bonded in a 3-coordinate geometry to nine Co+1.25+ atoms. In the third P3- site, P3- is bonded in a 9-coordinate geometry to two equivalent U3+ and seven Co+1.25+ atoms.

36 MATERIALS SCIENCE↗