Search NASA⌕ Search

SEARCH · Search NASA

Results for “Nb2SiTe4”

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 Nb2SiTe4 by Materials Project

Nb2SiTe4 crystallizes in the monoclinic P2_1/c space group. The structure is two-dimensional and consists of two Nb2SiTe4 sheets oriented in the (0, 0, 1) direction. Nb2+ is bonded to six Te2- atoms to form a mixture of distorted edge and face-sharing NbTe6 pentagonal pyramids. There are a spread of Nb–Te bond distances ranging from 2.85–2.97 Å. Si4+ is bonded in a square co-planar geometry to four Te2- atoms. All Si–Te bond lengths are 2.74 Å. There are two inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 4-coordinate geometry to three equivalent Nb2+ and one Si4+ atom. In the second Te2- site, Te2- is bonded in a 4-coordinate geometry to three equivalent Nb2+ and one Si4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Nb2SiTe4 by Materials Project

Nb2SiTe4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are two inequivalent Nb2+ sites. In the first Nb2+ site, Nb2+ is bonded to six Te2- atoms to form distorted edge-sharing NbTe6 pentagonal pyramids. There are a spread of Nb–Te bond distances ranging from 2.80–2.99 Å. In the second Nb2+ site, Nb2+ is bonded to six Te2- atoms to form distorted edge-sharing NbTe6 pentagonal pyramids. There are a spread of Nb–Te bond distances ranging from 2.76–3.02 Å. Si4+ is bonded in a 4-coordinate geometry to five Te2- atoms. There are a spread of Si–Te bond distances ranging from 2.71–3.35 Å. There are four inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 4-coordinate geometry to three Nb2+ and one Si4+ atom. In the second Te2- site, Te2- is bonded in a 3-coordinate geometry to three Nb2+ and one Si4+ atom. In the third Te2- site, Te2- is bonded in a 4-coordinate geometry to three Nb2+ and one Si4+ atom. In the fourth Te2- site, Te2- is bonded in a 5-coordinate geometry to three Nb2+ and two equivalent Si4+ atoms.

36 MATERIALS SCIENCE↗