SEARCH · Engineering Papers

Results for “B-C-Nd”

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.

SourceResearch connectionFrom yearThrough year

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

2 records

All sources NASA NTRS DOE OSTI

DOE OSTI2020

Materials Data on Nd(BC)2 by Materials Project

NdB2C2 crystallizes in the tetragonal P4/mbm space group. The structure is three-dimensional. Nd2+ is bonded in a body-centered cubic geometry to eight equivalent C4- atoms. All Nd–C bond lengths are 2.79 Å. B3+ is bonded in a distorted trigonal planar geometry to three equivalent C4- atoms. There is one shorter (1.54 Å) and two longer (1.62 Å) B–C bond length. C4- is bonded in a 3-coordinate geometry to four equivalent Nd2+ and three equivalent B3+ atoms.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on Nd2BC by Materials Project

Nd2BC is Krennerite-derived structured and crystallizes in the monoclinic C2/m space group. The structure is two-dimensional and consists of one Nd2BC sheet oriented in the (2, 0, -1) direction. there are two inequivalent Nd3+ sites. In the first Nd3+ site, Nd3+ is bonded in a 3-coordinate geometry to three equivalent C3- atoms. There are one shorter (2.46 Å) and two longer (2.57 Å) Nd–C bond lengths. In the second Nd3+ site, Nd3+ is bonded in a 2-coordinate geometry to four equivalent B3- and two equivalent C3- atoms. There are two shorter (2.71 Å) and two longer (2.89 Å) Nd–B bond lengths. Both Nd–C bond lengths are 2.61 Å. B3- is bonded in a distorted single-bond geometry to four equivalent Nd3+ and one C3- atom. The B–C bond length is 1.50 Å. C3- is bonded to five Nd3+ and one B3- atom to form distorted edge-sharing CNd5B octahedra.

36 MATERIALS SCIENCE↗