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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 MoWO6 by Materials Project

WMoO6 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. W6+ is bonded to six O2- atoms to form WO6 octahedra that share corners with six equivalent MoO6 octahedra. The corner-sharing octahedral tilt angles are 18°. All W–O bond lengths are 1.93 Å. Mo6+ is bonded to six O2- atoms to form MoO6 octahedra that share corners with six equivalent WO6 octahedra. The corner-sharing octahedral tilt angles are 18°. All Mo–O bond lengths are 1.93 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a linear geometry to one W6+ and one Mo6+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one W6+ and one Mo6+ atom. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to one W6+ and one Mo6+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Mo2W2O5 by Materials Project

WWMo2O5 crystallizes in the tetragonal P4/mmm space group. The structure is two-dimensional and consists of one tungsten molecule and one WMo2O5 sheet oriented in the (0, 0, 1) direction. In the WMo2O5 sheet, W2+ is bonded in a distorted body-centered cubic geometry to twelve O2- atoms. There are eight shorter (2.32 Å) and four longer (2.61 Å) W–O bond lengths. Mo3+ is bonded in a 5-coordinate geometry to five O2- atoms. There are four shorter (2.05 Å) and one longer (2.30 Å) Mo–O bond lengths. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent W2+, two equivalent Mo3+, and two equivalent O2- atoms to form a mixture of distorted corner, edge, and face-sharing OMo2W2O2 tetrahedra. Both O–O bond lengths are 2.32 Å. In the second O2- site, O2- is bonded in a distorted linear geometry to four equivalent W2+, two equivalent Mo3+, and eight equivalent O2- atoms.

36 MATERIALS SCIENCE↗