Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Boride”

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.

At least 217 records · Page 12
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on TbGePd2 by Materials Project

TbPd2Ge is delta Molybdenum Boride-derived structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Tb is bonded in a 11-coordinate geometry to eight equivalent Pd and three equivalent Ge atoms. There are a spread of Tb–Pd bond distances ranging from 3.04–3.24 Å. There are a spread of Tb–Ge bond distances ranging from 3.02–3.09 Å. Pd is bonded in a 12-coordinate geometry to four equivalent Tb and three equivalent Ge atoms. There are a spread of Pd–Ge bond distances ranging from 2.53–2.67 Å. Ge is bonded in a 9-coordinate geometry to three equivalent Tb and six equivalent Pd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sm2In3Cu by Materials Project

Sm2CuIn3 is Tungsten boride-derived structured and crystallizes in the trigonal P3m1 space group. The structure is three-dimensional. there are two inequivalent Sm sites. In the first Sm site, Sm is bonded in a 12-coordinate geometry to three equivalent Cu and nine In atoms. All Sm–Cu bond lengths are 3.07 Å. There are a spread of Sm–In bond distances ranging from 3.18–3.70 Å. In the second Sm site, Sm is bonded in a 12-coordinate geometry to three equivalent Cu and nine In atoms. All Sm–Cu bond lengths are 3.46 Å. There are a spread of Sm–In bond distances ranging from 3.18–3.71 Å. Cu is bonded in a 10-coordinate geometry to six Sm and four In atoms. There are three shorter (2.78 Å) and one longer (2.99 Å) Cu–In bond lengths. There are three inequivalent In sites. In the first In site, In is bonded in a 10-coordinate geometry to six Sm, three equivalent Cu, and one In atom. The In–In bond length is 3.29 Å. In the second In site, In is bonded in a 10-coordinate geometry to six Sm and four In atoms. All In–In bond lengths are 2.88 Å. In the third In site, In is bonded in a 10-coordinate geometry to six Sm, one Cu, and three equivalent In atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on B2MoRu by Materials Project

MoRuB2 is delta Molybdenum Boride-derived structured and crystallizes in the orthorhombic Pmc2_1 space group. The structure is three-dimensional. Mo3+ is bonded in a 7-coordinate geometry to seven B3- atoms. There are a spread of Mo–B bond distances ranging from 2.31–2.51 Å. Ru3+ is bonded in a 7-coordinate geometry to seven B3- atoms. There are a spread of Ru–B bond distances ranging from 2.28–2.63 Å. There are two inequivalent B3- sites. In the first B3- site, B3- is bonded in a 9-coordinate geometry to three equivalent Mo3+, four equivalent Ru3+, and two equivalent B3- atoms. Both B–B bond lengths are 1.78 Å. In the second B3- site, B3- is bonded in a 9-coordinate geometry to four equivalent Mo3+, three equivalent Ru3+, and two equivalent B3- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tm2InNi2 by Materials Project

Tm2Ni2In is Tungsten boride-derived structured and crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. Tm is bonded in a 10-coordinate geometry to six equivalent Ni and four equivalent In atoms. There are four shorter (2.78 Å) and two longer (2.88 Å) Tm–Ni bond lengths. All Tm–In bond lengths are 3.30 Å. Ni is bonded in a 9-coordinate geometry to six equivalent Tm, two equivalent Ni, and one In atom. Both Ni–Ni bond lengths are 2.46 Å. The Ni–In bond length is 2.77 Å. In is bonded in a 10-coordinate geometry to eight equivalent Tm and two equivalent Ni atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tm2Ga3Cu by Materials Project

Tm2CuGa3 is Tungsten boride-derived structured and crystallizes in the trigonal P3m1 space group. The structure is three-dimensional. there are two inequivalent Tm sites. In the first Tm site, Tm is bonded in a 12-coordinate geometry to three equivalent Cu and nine Ga atoms. All Tm–Cu bond lengths are 2.86 Å. There are a spread of Tm–Ga bond distances ranging from 2.95–3.37 Å. In the second Tm site, Tm is bonded in a 12-coordinate geometry to three equivalent Cu and nine Ga atoms. All Tm–Cu bond lengths are 3.19 Å. There are six shorter (2.94 Å) and three longer (3.35 Å) Tm–Ga bond lengths. Cu is bonded in a 10-coordinate geometry to six Tm and four Ga atoms. There are three shorter (2.55 Å) and one longer (2.91 Å) Cu–Ga bond lengths. There are three inequivalent Ga sites. In the first Ga site, Ga is bonded in a 10-coordinate geometry to six Tm, three equivalent Cu, and one Ga atom. The Ga–Ga bond length is 3.05 Å. In the second Ga site, Ga is bonded in a 10-coordinate geometry to six Tm and four Ga atoms. All Ga–Ga bond lengths are 2.60 Å. In the third Ga site, Ga is bonded in a 10-coordinate geometry to six Tm, one Cu, and three equivalent Ga atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HoSiPd2 by Materials Project

HoPd2Si is delta Molybdenum Boride-derived structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Ho is bonded in a 11-coordinate geometry to ten equivalent Pd and three equivalent Si atoms. There are a spread of Ho–Pd bond distances ranging from 2.96–3.53 Å. There are two shorter (2.98 Å) and one longer (3.03 Å) Ho–Si bond lengths. Pd is bonded in a 12-coordinate geometry to five equivalent Ho, four equivalent Pd, and three equivalent Si atoms. There are a spread of Pd–Pd bond distances ranging from 2.78–3.05 Å. There are a spread of Pd–Si bond distances ranging from 2.49–2.62 Å. Si is bonded in a 9-coordinate geometry to three equivalent Ho and six equivalent Pd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CrRe3B4 by Materials Project

CrRe3B4 is delta Molybdenum Boride-derived structured and crystallizes in the orthorhombic Imm2 space group. The structure is three-dimensional. Cr3+ is bonded in a 7-coordinate geometry to seven B3- atoms. There are a spread of Cr–B bond distances ranging from 2.19–2.54 Å. There are three inequivalent Re3+ sites. In the first Re3+ site, Re3+ is bonded in a 7-coordinate geometry to seven B3- atoms. There are a spread of Re–B bond distances ranging from 2.25–2.74 Å. In the second Re3+ site, Re3+ is bonded in a 7-coordinate geometry to seven B3- atoms. There are a spread of Re–B bond distances ranging from 2.26–2.37 Å. In the third Re3+ site, Re3+ is bonded in a 7-coordinate geometry to seven B3- atoms. There are a spread of Re–B bond distances ranging from 2.25–2.75 Å. There are four inequivalent B3- sites. In the first B3- site, B3- is bonded in a 9-coordinate geometry to one Cr3+, six Re3+, and two equivalent B3- atoms. Both B–B bond lengths are 1.86 Å. In the second B3- site, B3- is bonded in a 9-coordinate geometry to seven Re3+ and two equivalent B3- atoms. In the third B3- site, B3- is bonded in a 9-coordinate geometry to four equivalent Cr3+, three Re3+, and two equivalent B3- atoms. Both B–B bond lengths are 1.82 Å. In the fourth B3- site, B3- is bonded in a 9-coordinate geometry to two equivalent Cr3+, five Re3+, and two equivalent B3- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Mg3Si4 by Materials Project

Mg3Si4 is delta Molybdenum Boride-like structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are six inequivalent Mg sites. In the first Mg site, Mg is bonded in a 7-coordinate geometry to one Mg and eight Si atoms. The Mg–Mg bond length is 3.14 Å. There are a spread of Mg–Si bond distances ranging from 2.76–3.11 Å. In the second Mg site, Mg is bonded in a 9-coordinate geometry to nine Si atoms. There are a spread of Mg–Si bond distances ranging from 2.76–3.05 Å. In the third Mg site, Mg is bonded in a 7-coordinate geometry to four Mg and seven Si atoms. There are a spread of Mg–Mg bond distances ranging from 2.93–3.06 Å. There are a spread of Mg–Si bond distances ranging from 2.83–3.10 Å. In the fourth Mg site, Mg is bonded in a 11-coordinate geometry to three Mg and eight Si atoms. The Mg–Mg bond length is 3.02 Å. There are a spread of Mg–Si bond distances ranging from 2.76–3.16 Å. In the fifth Mg site, Mg is bonded in a 12-coordinate geometry to one Mg and six Si atoms. The Mg–Mg bond length is 3.07 Å. There are a spread of Mg–Si bond distances ranging from 2.82–3.09 Å. In the sixth Mg site, Mg is bonded in a 12-coordinate geometry to five Mg and seven Si atoms. There are a spread of Mg–Si bond distances ranging from 2.68–3.15 Å. There are eight inequivalent Si sites. In the first Si site, Si is bonded in a 9-coordinate geometry to five Mg and four Si atoms. There are a spread of Si–Si bond distances ranging from 2.44–2.61 Å. In the second Si site, Si is bonded in a 7-coordinate geometry to three Mg and four Si atoms. There are a spread of Si–Si bond distances ranging from 2.48–2.60 Å. In the third Si site, Si is bonded in a 9-coordinate geometry to seven Mg and two Si atoms. The Si–Si bond length is 2.48 Å. In the fourth Si site, Si is bonded in a 9-coordinate geometry to seven Mg and two Si atoms. The Si–Si bond length is 2.61 Å. In the fifth Si site, Si is bonded in a 9-coordinate geometry to seven Mg and two Si atoms. In the sixth Si site, Si is bonded in a 8-coordinate geometry to five Mg and three Si atoms. The Si–Si bond length is 2.62 Å. In the seventh Si site, Si is bonded in a 9-coordinate geometry to five Mg and four Si atoms. The Si–Si bond length is 2.54 Å. In the eighth Si site, Si is bonded in a 7-coordinate geometry to six Mg and one Si atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tm11Ge10 by Materials Project

Tm11Ge10 is delta Molybdenum Boride-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are four inequivalent Tm sites. In the first Tm site, Tm is bonded to seven Ge atoms to form a mixture of distorted corner, edge, and face-sharing TmGe7 pentagonal bipyramids. There are a spread of Tm–Ge bond distances ranging from 2.85–3.29 Å. In the second Tm site, Tm is bonded in a 7-coordinate geometry to seven Ge atoms. There are a spread of Tm–Ge bond distances ranging from 2.76–3.40 Å. In the third Tm site, Tm is bonded in a 9-coordinate geometry to nine Ge atoms. There are a spread of Tm–Ge bond distances ranging from 3.19–3.64 Å. In the fourth Tm site, Tm is bonded in a 7-coordinate geometry to seven Ge atoms. There are a spread of Tm–Ge bond distances ranging from 2.87–3.05 Å. There are five inequivalent Ge sites. In the first Ge site, Ge is bonded in a 2-coordinate geometry to eight Tm atoms. In the second Ge site, Ge is bonded in a 9-coordinate geometry to nine Tm atoms. In the third Ge site, Ge is bonded in a 9-coordinate geometry to seven Tm and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.62 Å. In the fourth Ge site, Ge is bonded in a 8-coordinate geometry to eight Tm atoms. In the fifth Ge site, Ge is bonded in a 9-coordinate geometry to eight Tm and one Ge atom. The Ge–Ge bond length is 2.56 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NdAgSn by Materials Project

NdAgSn is Tungsten boride-derived structured and crystallizes in the trigonal P-3m1 space group. The structure is three-dimensional. Nd is bonded in a 12-coordinate geometry to six equivalent Ag and six equivalent Sn atoms. There are three shorter (3.28 Å) and three longer (3.43 Å) Nd–Ag bond lengths. There are three shorter (3.28 Å) and three longer (3.77 Å) Nd–Sn bond lengths. Ag is bonded in a 10-coordinate geometry to six equivalent Nd, three equivalent Ag, and one Sn atom. All Ag–Ag bond lengths are 2.84 Å. The Ag–Sn bond length is 3.34 Å. Sn is bonded in a 10-coordinate geometry to six equivalent Nd, one Ag, and three equivalent Sn atoms. All Sn–Sn bond lengths are 2.94 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on MgSi by Materials Project

MgSi is delta Molybdenum Boride-like structured and crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are twelve inequivalent Mg sites. In the first Mg site, Mg is bonded in a 7-coordinate geometry to seven Si atoms. There are a spread of Mg–Si bond distances ranging from 2.73–2.96 Å. In the second Mg site, Mg is bonded in a 6-coordinate geometry to six Si atoms. There are a spread of Mg–Si bond distances ranging from 2.74–3.10 Å. In the third Mg site, Mg is bonded in a 5-coordinate geometry to six Si atoms. There are a spread of Mg–Si bond distances ranging from 2.73–3.20 Å. In the fourth Mg site, Mg is bonded in a 7-coordinate geometry to seven Si atoms. There are a spread of Mg–Si bond distances ranging from 2.81–3.08 Å. In the fifth Mg site, Mg is bonded in a 12-coordinate geometry to eight Si atoms. There are a spread of Mg–Si bond distances ranging from 2.74–3.19 Å. In the sixth Mg site, Mg is bonded in a 6-coordinate geometry to six Si atoms. There are a spread of Mg–Si bond distances ranging from 2.72–3.09 Å. In the seventh Mg site, Mg is bonded in a 6-coordinate geometry to six Si atoms. There are a spread of Mg–Si bond distances ranging from 2.75–3.09 Å. In the eighth Mg site, Mg is bonded in a 7-coordinate geometry to seven Si atoms. There are a spread of Mg–Si bond distances ranging from 2.73–2.95 Å. In the ninth Mg site, Mg is bonded in a 5-coordinate geometry to six Si atoms. There are a spread of Mg–Si bond distances ranging from 2.73–3.21 Å. In the tenth Mg site, Mg is bonded in a 12-coordinate geometry to eight Si atoms. There are a spread of Mg–Si bond distances ranging from 2.75–3.18 Å. In the eleventh Mg site, Mg is bonded in a 7-coordinate geometry to seven Si atoms. There are a spread of Mg–Si bond distances ranging from 2.81–3.07 Å. In the twelfth Mg site, Mg is bonded in a 6-coordinate geometry to six Si atoms. There are a spread of Mg–Si bond distances ranging from 2.73–3.10 Å. There are twelve inequivalent Si sites. In the first Si site, Si is bonded in a 8-coordinate geometry to six Mg and two Si atoms. There are one shorter (2.45 Å) and one longer (2.60 Å) Si–Si bond lengths. In the second Si site, Si is bonded in a 9-coordinate geometry to seven Mg and two Si atoms. There are one shorter (2.45 Å) and one longer (2.48 Å) Si–Si bond lengths. In the third Si site, Si is bonded in a 9-coordinate geometry to seven Mg and two Si atoms. There are one shorter (2.46 Å) and one longer (2.60 Å) Si–Si bond lengths. In the fourth Si site, Si is bonded in a 8-coordinate geometry to six Mg and two Si atoms. There are one shorter (2.46 Å) and one longer (2.51 Å) Si–Si bond lengths. In the fifth Si site, Si is bonded in a 9-coordinate geometry to seven Mg and two Si atoms. The Si–Si bond length is 2.47 Å. In the sixth Si site, Si is bonded in a 9-coordinate geometry to seven Mg and two Si atoms. There are one shorter (2.45 Å) and one longer (2.50 Å) Si–Si bond lengths. In the seventh Si site, Si is bonded in a 9-coordinate geometry to seven Mg and two Si atoms. The Si–Si bond length is 2.46 Å. In the eighth Si site, Si is bonded in a 8-coordinate geometry to six Mg and two Si atoms. In the ninth Si site, Si is bonded in a 9-coordinate geometry to seven Mg and two Si atoms. In the tenth Si site, Si is bonded in a 9-coordinate geometry to seven Mg and two Si atoms. In the eleventh Si site, Si is bonded in a 8-coordinate geometry to six Mg and two Si atoms. In the twelfth Si site, Si is bonded in a 9-coordinate geometry to seven Mg and two Si atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on YGePd2 by Materials Project

YPd2Ge is delta Molybdenum Boride-derived structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Y is bonded in a 11-coordinate geometry to eight equivalent Pd and three equivalent Ge atoms. There are a spread of Y–Pd bond distances ranging from 3.03–3.24 Å. There are a spread of Y–Ge bond distances ranging from 3.02–3.07 Å. Pd is bonded in a 12-coordinate geometry to four equivalent Y and three equivalent Ge atoms. There are a spread of Pd–Ge bond distances ranging from 2.53–2.67 Å. Ge is bonded in a 9-coordinate geometry to three equivalent Y and six equivalent Pd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HoGePd2 by Materials Project

HoPd2Ge is delta Molybdenum Boride-derived structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Ho is bonded in a 11-coordinate geometry to eight equivalent Pd and three equivalent Ge atoms. There are a spread of Ho–Pd bond distances ranging from 3.03–3.24 Å. There are a spread of Ho–Ge bond distances ranging from 3.01–3.08 Å. Pd is bonded in a 12-coordinate geometry to four equivalent Ho and three equivalent Ge atoms. There are a spread of Pd–Ge bond distances ranging from 2.53–2.66 Å. Ge is bonded in a 9-coordinate geometry to three equivalent Ho and six equivalent Pd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on MgSi by Materials Project

MgSi is delta Molybdenum Boride-like structured and crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are six inequivalent Mg sites. In the first Mg site, Mg is bonded in a 7-coordinate geometry to seven Si atoms. There are a spread of Mg–Si bond distances ranging from 2.71–2.97 Å. In the second Mg site, Mg is bonded in a 6-coordinate geometry to six Si atoms. There are a spread of Mg–Si bond distances ranging from 2.76–3.11 Å. In the third Mg site, Mg is bonded in a 6-coordinate geometry to six Si atoms. There are a spread of Mg–Si bond distances ranging from 2.74–3.11 Å. In the fourth Mg site, Mg is bonded in a 7-coordinate geometry to seven Si atoms. There are a spread of Mg–Si bond distances ranging from 2.79–3.06 Å. In the fifth Mg site, Mg is bonded in a 7-coordinate geometry to seven Si atoms. There are a spread of Mg–Si bond distances ranging from 2.76–3.02 Å. In the sixth Mg site, Mg is bonded in a 6-coordinate geometry to six Si atoms. There are a spread of Mg–Si bond distances ranging from 2.72–3.12 Å. There are six inequivalent Si sites. In the first Si site, Si is bonded in a 8-coordinate geometry to six Mg and two Si atoms. There are one shorter (2.46 Å) and one longer (2.59 Å) Si–Si bond lengths. In the second Si site, Si is bonded in a 8-coordinate geometry to six Mg and two Si atoms. There are one shorter (2.41 Å) and one longer (2.49 Å) Si–Si bond lengths. In the third Si site, Si is bonded in a 9-coordinate geometry to seven Mg and two Si atoms. The Si–Si bond length is 2.46 Å. In the fourth Si site, Si is bonded in a 8-coordinate geometry to six Mg and two Si atoms. The Si–Si bond length is 2.52 Å. In the fifth Si site, Si is bonded in a 9-coordinate geometry to seven Mg and two Si atoms. The Si–Si bond length is 2.52 Å. In the sixth Si site, Si is bonded in a 9-coordinate geometry to seven Mg and two Si atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Tb2In3Cu by Materials Project

Tb2CuIn3 is Tungsten boride-derived structured and crystallizes in the trigonal P3m1 space group. The structure is three-dimensional. there are two inequivalent Tb sites. In the first Tb site, Tb is bonded in a 12-coordinate geometry to three equivalent Cu and nine In atoms. All Tb–Cu bond lengths are 3.06 Å. There are a spread of Tb–In bond distances ranging from 3.14–3.67 Å. In the second Tb site, Tb is bonded in a 9-coordinate geometry to three equivalent Cu and nine In atoms. All Tb–Cu bond lengths are 3.43 Å. There are a spread of Tb–In bond distances ranging from 3.15–3.69 Å. Cu is bonded in a 10-coordinate geometry to six Tb and four In atoms. There are three shorter (2.76 Å) and one longer (2.94 Å) Cu–In bond lengths. There are three inequivalent In sites. In the first In site, In is bonded in a 10-coordinate geometry to six Tb, three equivalent Cu, and one In atom. The In–In bond length is 3.24 Å. In the second In site, In is bonded in a 10-coordinate geometry to six Tb and four In atoms. All In–In bond lengths are 2.87 Å. In the third In site, In is bonded in a 10-coordinate geometry to six Tb, one Cu, and three equivalent In atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Dy11Ge10 by Materials Project

Dy11Ge10 is delta Molybdenum Boride-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are four inequivalent Dy sites. In the first Dy site, Dy is bonded in a 8-coordinate geometry to eight Ge atoms. There are four shorter (3.23 Å) and four longer (3.27 Å) Dy–Ge bond lengths. In the second Dy site, Dy is bonded in a 7-coordinate geometry to seven Ge atoms. There are a spread of Dy–Ge bond distances ranging from 2.80–3.47 Å. In the third Dy site, Dy is bonded in a 7-coordinate geometry to seven Ge atoms. There are a spread of Dy–Ge bond distances ranging from 2.92–3.11 Å. In the fourth Dy site, Dy is bonded in a 7-coordinate geometry to seven Ge atoms. There are a spread of Dy–Ge bond distances ranging from 2.89–3.36 Å. There are five inequivalent Ge sites. In the first Ge site, Ge is bonded in a 9-coordinate geometry to eight Dy and one Ge atom. The Ge–Ge bond length is 2.58 Å. In the second Ge site, Ge is bonded in a 9-coordinate geometry to eight Dy atoms. In the third Ge site, Ge is bonded in a 9-coordinate geometry to seven Dy and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.62 Å. In the fourth Ge site, Ge is bonded in a 8-coordinate geometry to eight Dy atoms. In the fifth Ge site, Ge is bonded in a 6-coordinate geometry to eight Dy atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Nb2B2Os by Materials Project

Nb2OsB2 is Tungsten boride-derived structured and crystallizes in the tetragonal P4/mnc space group. The structure is three-dimensional. Nb4+ is bonded in a 10-coordinate geometry to four equivalent Os2- and six equivalent B3- atoms. There are two shorter (2.74 Å) and two longer (2.85 Å) Nb–Os bond lengths. There are a spread of Nb–B bond distances ranging from 2.42–2.49 Å. Os2- is bonded in a 12-coordinate geometry to eight equivalent Nb4+ and four equivalent B3- atoms. All Os–B bond lengths are 2.40 Å. B3- is bonded in a 9-coordinate geometry to six equivalent Nb4+, two equivalent Os2-, and one B3- atom. The B–B bond length is 1.90 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on FeB by Materials Project

FeB is delta Molybdenum Boride structured and crystallizes in the tetragonal I4_1/amd space group. The structure is three-dimensional. Fe3+ is bonded in a 7-coordinate geometry to seven equivalent B3- atoms. There are four shorter (2.14 Å) and three longer (2.16 Å) Fe–B bond lengths. B3- is bonded in a 9-coordinate geometry to seven equivalent Fe3+ and two equivalent B3- atoms. Both B–B bond lengths are 1.80 Å.

36 MATERIALS SCIENCE↗