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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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6 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Re3B by Materials Project

Re3B crystallizes in the orthorhombic Cmcm space group. The structure is two-dimensional and consists of two Re3B sheets oriented in the (0, 1, 0) direction. there are two inequivalent Re sites. In the first Re site, Re is bonded in a 2-coordinate geometry to three equivalent B atoms. There are two shorter (2.25 Å) and one longer (2.59 Å) Re–B bond lengths. In the second Re site, Re is bonded in a distorted L-shaped geometry to two equivalent B atoms. Both Re–B bond lengths are 2.22 Å. B is bonded in a 6-coordinate geometry to eight Re atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ReB2 by Materials Project

ReB2 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Re6+ is bonded in a 8-coordinate geometry to eight equivalent B3- atoms. There are two shorter (2.23 Å) and six longer (2.27 Å) Re–B bond lengths. B3- is bonded in a 7-coordinate geometry to four equivalent Re6+ and three equivalent B3- atoms. All B–B bond lengths are 1.83 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ReB by Materials Project

ReB crystallizes in the tetragonal I4_1/amd space group. The structure is three-dimensional. Re3+ is bonded in a 5-coordinate geometry to five equivalent B3- atoms. There are a spread of Re–B bond distances ranging from 2.17–2.27 Å. B3- is bonded in a 6-coordinate geometry to five equivalent Re3+ and one B3- atom. The B–B bond length is 1.78 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ReB3 by Materials Project

ReB3 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Re3+ is bonded in a 8-coordinate geometry to fourteen B1- atoms. There are eight shorter (2.34 Å) and six longer (2.63 Å) Re–B bond lengths. There are two inequivalent B1- sites. In the first B1- site, B1- is bonded in a distorted hexagonal planar geometry to six equivalent Re3+ and six equivalent B1- atoms. All B–B bond lengths are 1.87 Å. In the second B1- site, B1- is bonded in a 10-coordinate geometry to four equivalent Re3+ and six B1- atoms. All B–B bond lengths are 2.01 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Re7B3 by Materials Project

Re7B3 crystallizes in the hexagonal P6_3mc space group. The structure is three-dimensional. there are three inequivalent Re sites. In the first Re site, Re is bonded in a 3-coordinate geometry to three equivalent B atoms. All Re–B bond lengths are 2.24 Å. In the second Re site, Re is bonded in a distorted L-shaped geometry to two equivalent B atoms. Both Re–B bond lengths are 2.26 Å. In the third Re site, Re is bonded in a 3-coordinate geometry to three equivalent B atoms. There are one shorter (2.20 Å) and two longer (2.23 Å) Re–B bond lengths. B is bonded in a 6-coordinate geometry to six Re atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ReB4 by Materials Project

ReB4 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. there are two inequivalent Re6+ sites. In the first Re6+ site, Re6+ is bonded in a 2-coordinate geometry to fourteen B+1.50- atoms. There are two shorter (2.25 Å) and twelve longer (2.38 Å) Re–B bond lengths. In the second Re6+ site, Re6+ is bonded to twelve equivalent B+1.50- atoms to form face-sharing ReB12 cuboctahedra. All Re–B bond lengths are 2.40 Å. There are two inequivalent B+1.50- sites. In the first B+1.50- site, B+1.50- is bonded in a 1-coordinate geometry to one Re6+ and seven B+1.50- atoms. There is one shorter (1.69 Å) and six longer (1.94 Å) B–B bond length. In the second B+1.50- site, B+1.50- is bonded in a 9-coordinate geometry to four Re6+ and five B+1.50- atoms. There is one shorter (1.77 Å) and two longer (1.84 Å) B–B bond length.

36 MATERIALS SCIENCE↗