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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.

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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on WNO by Materials Project

WNO crystallizes in the trigonal R3m space group. The structure is two-dimensional and consists of three WNO sheets oriented in the (0, 0, 1) direction. W5+ is bonded to three equivalent N3- and three equivalent O2- atoms to form edge-sharing WN3O3 octahedra. All W–N bond lengths are 2.03 Å. All W–O bond lengths are 2.13 Å. N3- is bonded in a trigonal non-coplanar geometry to three equivalent W5+ atoms. O2- is bonded in a 3-coordinate geometry to three equivalent W5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on W3NO9 by Materials Project

(WO3)6N2 crystallizes in the hexagonal P6_3/mcm space group. The structure is three-dimensional and consists of two ammonia molecules and one WO3 framework. In the WO3 framework, W5+ is bonded to six O2- atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedra tilt angles range from 0–29°. There are a spread of W–O bond distances ranging from 1.87–2.02 Å. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent W5+ atoms. In the second O2- site, O2- is bonded in a linear geometry to two equivalent W5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on W2NO6 by Materials Project

(WO3)4N2 crystallizes in the cubic Fd-3m space group. The structure is three-dimensional and consists of eight ammonia molecules and one WO3 framework. In the WO3 framework, W+4.50+ is bonded to six equivalent O2- atoms to form corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles are 36°. All W–O bond lengths are 1.94 Å. O2- is bonded in a bent 150 degrees geometry to two equivalent W+4.50+ atoms.

36 MATERIALS SCIENCE↗