Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Co-K-O-Se”

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.

2 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on K2Co(SeO3)2 by Materials Project

K2Co(SeO3)2 crystallizes in the triclinic P-1 space group. The structure is two-dimensional and consists of one K2Co(SeO3)2 sheet oriented in the (-1, 0, 1) direction. K1+ is bonded in a 2-coordinate geometry to four O2- atoms. There are a spread of K–O bond distances ranging from 2.11–2.74 Å. Co2+ is bonded in a distorted linear geometry to four O2- atoms. There are two shorter (1.66 Å) and two longer (2.47 Å) Co–O bond lengths. Se4+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of Se–O bond distances ranging from 1.29–2.29 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one K1+, one Co2+, and one Se4+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to one K1+, one Co2+, and two equivalent Se4+ atoms. In the third O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent K1+ and one Se4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2Co2(SeO3)3 by Materials Project

K2Co2(SeO3)3 crystallizes in the orthorhombic Cmc2_1 space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.81–3.04 Å. In the second K1+ site, K1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of K–O bond distances ranging from 2.95–2.98 Å. There are two inequivalent Co3+ sites. In the first Co3+ site, Co3+ is bonded to six O2- atoms to form face-sharing CoO6 octahedra. There are a spread of Co–O bond distances ranging from 2.09–2.21 Å. In the second Co3+ site, Co3+ is bonded to six O2- atoms to form face-sharing CoO6 octahedra. There are a spread of Co–O bond distances ranging from 2.05–2.22 Å. There are three inequivalent Se+3.33+ sites. In the first Se+3.33+ site, Se+3.33+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. All Se–O bond lengths are 1.74 Å. In the second Se+3.33+ site, Se+3.33+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. All Se–O bond lengths are 1.74 Å. In the third Se+3.33+ site, Se+3.33+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There is one shorter (1.73 Å) and two longer (1.74 Å) Se–O bond length. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a 2-coordinate geometry to three K1+, one Co3+, and one Se+3.33+ atom. In the second O2- site, O2- is bonded in a distorted T-shaped geometry to two Co3+ and one Se+3.33+ atom. In the third O2- site, O2- is bonded in a distorted T-shaped geometry to two Co3+ and one Se+3.33+ atom. In the fourth O2- site, O2- is bonded in a 2-coordinate geometry to three K1+, one Co3+, and one Se+3.33+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to three K1+, one Co3+, and one Se+3.33+ atom. In the sixth O2- site, O2- is bonded in a 2-coordinate geometry to three K1+, one Co3+, and one Se+3.33+ atom.

36 MATERIALS SCIENCE↗