SEARCH · Engineering Papers

Results for “CoAs2”

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 CoAs2 by Materials Project

CoAs2 is Marcasite-like structured and crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Co4+ is bonded to six As2- atoms to form a mixture of edge and corner-sharing CoAs6 octahedra. The corner-sharing octahedra tilt angles range from 51–58°. There are a spread of Co–As bond distances ranging from 2.32–2.42 Å. There are two inequivalent As2- sites. In the first As2- site, As2- is bonded in a 4-coordinate geometry to three equivalent Co4+ and one As2- atom. The As–As bond length is 2.51 Å. In the second As2- site, As2- is bonded in a 4-coordinate geometry to three equivalent Co4+ and one As2- atom.

36 MATERIALS SCIENCE↗

DOE OSTI2020

Materials Data on CoAs2 by Materials Project

CoAs2 is zeta iron carbide structured and crystallizes in the orthorhombic Pnnm space group. The structure is three-dimensional. Co4+ is bonded to six equivalent As2- atoms to form a mixture of edge and corner-sharing CoAs6 octahedra. The corner-sharing octahedral tilt angles are 54°. There are two shorter (2.36 Å) and four longer (2.37 Å) Co–As bond lengths. As2- is bonded in a 4-coordinate geometry to three equivalent Co4+ and one As2- atom. The As–As bond length is 2.52 Å.

36 MATERIALS SCIENCE↗