Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “I-Nb-Te”

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.

4 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Nb3TeI7 by Materials Project

Nb3TeI7 crystallizes in the hexagonal P6_3mc space group. The structure is two-dimensional and consists of two Nb3TeI7 sheets oriented in the (0, 0, 1) direction. Nb3+ is bonded to one Te2- and five I1- atoms to form distorted edge-sharing NbTeI5 octahedra. The Nb–Te bond length is 2.74 Å. There are a spread of Nb–I bond distances ranging from 2.77–3.06 Å. Te2- is bonded in a 12-coordinate geometry to three equivalent Nb3+ atoms. There are three inequivalent I1- sites. In the first I1- site, I1- is bonded in a distorted trigonal non-coplanar geometry to three equivalent Nb3+ atoms. In the second I1- site, I1- is bonded in a 2-coordinate geometry to two equivalent Nb3+ atoms. In the third I1- site, I1- is bonded in a water-like geometry to two equivalent Nb3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NbTeI3 by Materials Project

NbTeI3 crystallizes in the monoclinic P2/c space group. The structure is three-dimensional. Nb5+ is bonded to two equivalent Te2- and five I1- atoms to form a mixture of distorted edge and face-sharing NbTe2I5 pentagonal bipyramids. There are one shorter (2.80 Å) and one longer (2.90 Å) Nb–Te bond lengths. There are a spread of Nb–I bond distances ranging from 2.80–3.00 Å. Te2- is bonded in a 9-coordinate geometry to two equivalent Nb5+, one Te2-, and six I1- atoms. The Te–Te bond length is 2.72 Å. There are a spread of Te–I bond distances ranging from 3.64–4.49 Å. There are three inequivalent I1- sites. In the first I1- site, I1- is bonded in a distorted water-like geometry to two equivalent Nb5+ and one Te2- atom. In the second I1- site, I1- is bonded in a distorted single-bond geometry to one Nb5+ and three equivalent Te2- atoms. In the third I1- site, I1- is bonded in a 1-coordinate geometry to two equivalent Nb5+ and two equivalent Te2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Nb3TeI7 by Materials Project

Nb3TeI7 crystallizes in the trigonal P3m1 space group. The structure is two-dimensional and consists of one Nb3TeI7 sheet oriented in the (0, 0, 1) direction. Nb3+ is bonded to one Te2- and five I1- atoms to form distorted edge-sharing NbTeI5 octahedra. The Nb–Te bond length is 2.74 Å. There are a spread of Nb–I bond distances ranging from 2.76–3.07 Å. Te2- is bonded in a 12-coordinate geometry to three equivalent Nb3+ atoms. There are three inequivalent I1- sites. In the first I1- site, I1- is bonded in a 2-coordinate geometry to two equivalent Nb3+ atoms. In the second I1- site, I1- is bonded in a water-like geometry to two equivalent Nb3+ atoms. In the third I1- site, I1- is bonded in a distorted trigonal non-coplanar geometry to three equivalent Nb3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Nb(Te2I3)2 by Materials Project

Nb(TeI3)2(Te)2 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of four tellurium molecules and two Nb(TeI3)2 clusters. In each Nb(TeI3)2 cluster, Nb2+ is bonded in an L-shaped geometry to two I1- atoms. There are one shorter (2.99 Å) and one longer (3.00 Å) Nb–I bond lengths. There are two inequivalent Te1+ sites. In the first Te1+ site, Te1+ is bonded in a rectangular see-saw-like geometry to four I1- atoms. There are a spread of Te–I bond distances ranging from 2.81–3.20 Å. In the second Te1+ site, Te1+ is bonded in a rectangular see-saw-like geometry to four I1- atoms. There are a spread of Te–I bond distances ranging from 2.81–3.18 Å. There are six inequivalent I1- sites. In the first I1- site, I1- is bonded in a 3-coordinate geometry to one Nb2+ and two Te1+ atoms. In the second I1- site, I1- is bonded in a single-bond geometry to one Te1+ atom. In the third I1- site, I1- is bonded in a single-bond geometry to one Te1+ atom. In the fourth I1- site, I1- is bonded in a single-bond geometry to one Te1+ atom. In the fifth I1- site, I1- is bonded in a single-bond geometry to one Te1+ atom. In the sixth I1- site, I1- is bonded in a 3-coordinate geometry to one Nb2+ and two Te1+ atoms.

36 MATERIALS SCIENCE↗