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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 Co3B by Materials Project

Co3B is Cementite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Co1+ sites. In the first Co1+ site, Co1+ is bonded in a 3-coordinate geometry to three equivalent B3- atoms. There are two shorter (2.05 Å) and one longer (2.27 Å) Co–B bond lengths. In the second Co1+ site, Co1+ is bonded in a distorted bent 150 degrees geometry to two equivalent B3- atoms. There are one shorter (2.02 Å) and one longer (2.03 Å) Co–B bond lengths. B3- is bonded in a 6-coordinate geometry to eight Co1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CoB by Materials Project

CoB crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Co3+ is bonded in a 7-coordinate geometry to seven equivalent B3- atoms. There are a spread of Co–B bond distances ranging from 2.08–2.15 Å. B3- is bonded in a 9-coordinate geometry to seven equivalent Co3+ and two equivalent B3- atoms. Both B–B bond lengths are 1.84 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Co2B by Materials Project

Co2B is Khatyrkite structured and crystallizes in the tetragonal I4/mcm space group. The structure is three-dimensional. Co+1.50+ is bonded in a 4-coordinate geometry to four equivalent B3- atoms. All Co–B bond lengths are 2.13 Å. B3- is bonded in a 10-coordinate geometry to eight equivalent Co+1.50+ and two equivalent B3- atoms. Both B–B bond lengths are 2.13 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Co23B6 by Materials Project

Co23B6 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are four inequivalent Co sites. In the first Co site, Co is bonded in a cuboctahedral geometry to twelve equivalent Co atoms. All Co–Co bond lengths are 2.49 Å. In the second Co site, Co is bonded in a tetrahedral geometry to four equivalent Co atoms. All Co–Co bond lengths are 2.35 Å. In the third Co site, Co is bonded in a 3-coordinate geometry to one Co and three equivalent B atoms. All Co–B bond lengths are 2.07 Å. In the fourth Co site, Co is bonded in a distorted bent 150 degrees geometry to one Co and two equivalent B atoms. Both Co–B bond lengths are 2.09 Å. B is bonded in a 8-coordinate geometry to eight Co atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Co4B by Materials Project

Co4B crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are eight inequivalent Co sites. In the first Co site, Co is bonded in a 1-coordinate geometry to one B atom. The Co–B bond length is 2.04 Å. In the second Co site, Co is bonded in a 1-coordinate geometry to one B atom. The Co–B bond length is 2.04 Å. In the third Co site, Co is bonded in a 2-coordinate geometry to three B atoms. There are two shorter (2.03 Å) and one longer (2.28 Å) Co–B bond lengths. In the fourth Co site, Co is bonded in a distorted L-shaped geometry to two B atoms. There are one shorter (2.02 Å) and one longer (2.04 Å) Co–B bond lengths. In the fifth Co site, Co is bonded in a distorted single-bond geometry to one B atom. The Co–B bond length is 2.05 Å. In the sixth Co site, Co is bonded in a distorted single-bond geometry to one B atom. The Co–B bond length is 2.05 Å. In the seventh Co site, Co is bonded in a distorted bent 150 degrees geometry to two B atoms. There are one shorter (1.99 Å) and one longer (2.01 Å) Co–B bond lengths. In the eighth Co site, Co is bonded in a distorted bent 150 degrees geometry to two B atoms. Both Co–B bond lengths are 2.00 Å. There are three inequivalent B sites. In the first B site, B is bonded in a 6-coordinate geometry to eight Co atoms. In the second B site, B is bonded in a 6-coordinate geometry to six Co atoms. In the third B site, B is bonded in a 6-coordinate geometry to six Co atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Co5B16 by Materials Project

Co5B16 crystallizes in the orthorhombic Pmma space group. The structure is three-dimensional. there are three inequivalent Co+1.20+ sites. In the first Co+1.20+ site, Co+1.20+ is bonded in a 12-coordinate geometry to twelve B+0.38- atoms. There are a spread of Co–B bond distances ranging from 1.97–2.47 Å. In the second Co+1.20+ site, Co+1.20+ is bonded in a 9-coordinate geometry to nine B+0.38- atoms. There are a spread of Co–B bond distances ranging from 2.08–2.27 Å. In the third Co+1.20+ site, Co+1.20+ is bonded to twelve B+0.38- atoms to form face-sharing CoB12 cuboctahedra. There are a spread of Co–B bond distances ranging from 2.00–2.29 Å. There are nine inequivalent B+0.38- sites. In the first B+0.38- site, B+0.38- is bonded in a 7-coordinate geometry to two equivalent Co+1.20+ and five B+0.38- atoms. There are a spread of B–B bond distances ranging from 1.66–1.88 Å. In the second B+0.38- site, B+0.38- is bonded in a 9-coordinate geometry to five Co+1.20+ and four B+0.38- atoms. There is one shorter (1.73 Å) and two longer (1.79 Å) B–B bond length. In the third B+0.38- site, B+0.38- is bonded in a 8-coordinate geometry to six Co+1.20+ and two equivalent B+0.38- atoms. Both B–B bond lengths are 1.74 Å. In the fourth B+0.38- site, B+0.38- is bonded in a 7-coordinate geometry to three Co+1.20+ and four B+0.38- atoms. There are a spread of B–B bond distances ranging from 1.64–1.85 Å. In the fifth B+0.38- site, B+0.38- is bonded in a 7-coordinate geometry to two equivalent Co+1.20+ and five B+0.38- atoms. Both B–B bond lengths are 1.83 Å. In the sixth B+0.38- site, B+0.38- is bonded in a 10-coordinate geometry to six Co+1.20+ and four B+0.38- atoms. Both B–B bond lengths are 1.76 Å. In the seventh B+0.38- site, B+0.38- is bonded in a 8-coordinate geometry to two Co+1.20+ and six B+0.38- atoms. The B–B bond length is 1.89 Å. In the eighth B+0.38- site, B+0.38- is bonded in a 8-coordinate geometry to four Co+1.20+ and four B+0.38- atoms. In the ninth B+0.38- site, B+0.38- is bonded in a 7-coordinate geometry to three Co+1.20+ and four B+0.38- atoms. The B–B bond length is 1.80 Å.

36 MATERIALS SCIENCE↗