Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Pr-Pt”

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.

Materials Data on PrPt5 by Materials Project

Pt5Pr crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Pr3+ is bonded in a distorted hexagonal planar geometry to eighteen Pt+0.60- atoms. There are six shorter (3.14 Å) and twelve longer (3.51 Å) Pr–Pt bond lengths. There are two inequivalent Pt+0.60- sites. In the first Pt+0.60- site, Pt+0.60- is bonded in a 12-coordinate geometry to three equivalent Pr3+ and six equivalent Pt+0.60- atoms. All Pt–Pt bond lengths are 2.72 Å. In the second Pt+0.60- site, Pt+0.60- is bonded to four equivalent Pr3+ and eight Pt+0.60- atoms to form a mixture of corner, edge, and face-sharing PtPr4Pt8 cuboctahedra. All Pt–Pt bond lengths are 2.72 Å.

36 MATERIALS SCIENCE↗

Materials Data on PrPt2 by Materials Project

PrPt2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Pr4+ is bonded in a 12-coordinate geometry to twelve equivalent Pt2- atoms. All Pr–Pt bond lengths are 3.25 Å. Pt2- is bonded to six equivalent Pr4+ and six equivalent Pt2- atoms to form a mixture of edge, corner, and face-sharing PtPr6Pt6 cuboctahedra. All Pt–Pt bond lengths are 2.77 Å.

36 MATERIALS SCIENCE↗

Materials Data on PrPt3 by Materials Project

PrPt3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Pr is bonded to twelve equivalent Pt atoms to form a mixture of face and corner-sharing PrPt12 cuboctahedra. All Pr–Pt bond lengths are 2.99 Å. Pt is bonded in a distorted square co-planar geometry to four equivalent Pr atoms.

36 MATERIALS SCIENCE↗

Materials Data on PrPt by Materials Project

PrPt crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Pr is bonded in a 7-coordinate geometry to seven equivalent Pt atoms. There are a spread of Pr–Pt bond distances ranging from 3.02–3.17 Å. Pt is bonded in a 7-coordinate geometry to seven equivalent Pr atoms.

36 MATERIALS SCIENCE↗

Materials Data on Pr3Pt4 by Materials Project

Pr3Pt4 crystallizes in the trigonal R-3 space group. The structure is three-dimensional. Pr is bonded in a 9-coordinate geometry to nine Pt atoms. There are a spread of Pr–Pt bond distances ranging from 2.95–3.42 Å. There are three inequivalent Pt sites. In the first Pt site, Pt is bonded in a 6-coordinate geometry to six equivalent Pr atoms. In the second Pt site, Pt is bonded in a 10-coordinate geometry to seven equivalent Pr and three equivalent Pt atoms. There are one shorter (2.95 Å) and two longer (3.05 Å) Pt–Pt bond lengths. In the third Pt site, Pt is bonded in a 6-coordinate geometry to six equivalent Pr atoms.

36 MATERIALS SCIENCE↗