Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Hg2SeO4”

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 Hg2SeO4 by Materials Project

Hg2SeO4 crystallizes in the monoclinic P2/c space group. The structure is two-dimensional and consists of one Hg2SeO4 sheet oriented in the (1, 0, 0) direction. Hg2+ is bonded in a 1-coordinate geometry to three O2- atoms. There are a spread of Hg–O bond distances ranging from 2.22–2.77 Å. Se4+ is bonded in a tetrahedral geometry to four O2- atoms. There is two shorter (1.66 Å) and two longer (1.72 Å) Se–O bond length. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Hg2+ and one Se4+ atom. In the second O2- site, O2- is bonded in a 3-coordinate geometry to two equivalent Hg2+ and one Se4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Hg12Se6O25 by Materials Project

(Hg2SeO4)12O2 crystallizes in the trigonal R-3 space group. The structure is three-dimensional and consists of three water molecules and one Hg2SeO4 framework. In the Hg2SeO4 framework, there are two inequivalent Hg2+ sites. In the first Hg2+ site, Hg2+ is bonded in a 2-coordinate geometry to six O2- atoms. There are a spread of Hg–O bond distances ranging from 2.11–2.89 Å. In the second Hg2+ site, Hg2+ is bonded to seven O2- atoms to form distorted edge-sharing HgO7 pentagonal bipyramids. There are a spread of Hg–O bond distances ranging from 2.29–2.65 Å. Se+4.33+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of Se–O bond distances ranging from 1.71–1.77 Å. There are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to three Hg2+ and one Se+4.33+ atom. In the second O2- site, O2- is bonded to four Hg2+ atoms to form corner-sharing OHg4 tetrahedra. In the third O2- site, O2- is bonded in a 4-coordinate geometry to three Hg2+ and one Se+4.33+ atom. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to three Hg2+ and one Se+4.33+ atom.

36 MATERIALS SCIENCE↗