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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on UB2Ru3 by Materials Project

URu3B2 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. U is bonded in a 12-coordinate geometry to two equivalent U, twelve equivalent Ru, and six equivalent B atoms. Both U–U bond lengths are 2.97 Å. All U–Ru bond lengths are 3.13 Å. All U–B bond lengths are 3.19 Å. Ru is bonded in a distorted square co-planar geometry to four equivalent U and four equivalent B atoms. All Ru–B bond lengths are 2.18 Å. B is bonded in a 6-coordinate geometry to three equivalent U and six equivalent Ru atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on U(BRu)4 by Materials Project

U(RuB)4 crystallizes in the tetragonal I4_1/acd space group. The structure is three-dimensional. U4+ is bonded in a 12-coordinate geometry to twelve equivalent B3- atoms. There are a spread of U–B bond distances ranging from 2.96–3.22 Å. Ru2+ is bonded to five equivalent B3- atoms to form a mixture of distorted edge and corner-sharing RuB5 trigonal bipyramids. There are a spread of Ru–B bond distances ranging from 2.14–2.26 Å. B3- is bonded in a 6-coordinate geometry to three equivalent U4+, five equivalent Ru2+, and one B3- atom. The B–B bond length is 1.75 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on U4(BRu4)3 by Materials Project

U4(Ru4B)3 crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. there are two inequivalent U sites. In the first U site, U is bonded to twelve Ru atoms to form URu12 cuboctahedra that share corners with twelve URu12 cuboctahedra, faces with six URu12 cuboctahedra, and faces with four equivalent BRu6 octahedra. There are a spread of U–Ru bond distances ranging from 2.82–3.00 Å. In the second U site, U is bonded to twelve Ru atoms to form URu12 cuboctahedra that share corners with twelve URu12 cuboctahedra, faces with six URu12 cuboctahedra, and faces with eight BRu6 octahedra. There are a spread of U–Ru bond distances ranging from 2.91–2.95 Å. There are five inequivalent Ru sites. In the first Ru site, Ru is bonded in a distorted single-bond geometry to four equivalent U and one B atom. The Ru–B bond length is 2.02 Å. In the second Ru site, Ru is bonded to four equivalent U and two B atoms to form a mixture of distorted edge, face, and corner-sharing RuU4B2 octahedra. The corner-sharing octahedra tilt angles range from 0–60°. There are one shorter (2.10 Å) and one longer (2.17 Å) Ru–B bond lengths. In the third Ru site, Ru is bonded in a distorted square co-planar geometry to four equivalent U atoms. In the fourth Ru site, Ru is bonded to four U and two equivalent B atoms to form a mixture of distorted edge, face, and corner-sharing RuU4B2 octahedra. The corner-sharing octahedra tilt angles range from 1–60°. Both Ru–B bond lengths are 2.08 Å. In the fifth Ru site, Ru is bonded to four equivalent U and two equivalent B atoms to form a mixture of distorted edge, face, and corner-sharing RuU4B2 octahedra. The corner-sharing octahedra tilt angles range from 0–60°. Both Ru–B bond lengths are 2.08 Å. There are two inequivalent B sites. In the first B site, B is bonded to six Ru atoms to form BRu6 octahedra that share corners with five BRu6 octahedra and faces with eight URu12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–8°. In the second B site, B is bonded to six Ru atoms to form BRu6 octahedra that share corners with six BRu6 octahedra and faces with eight equivalent URu12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on UB4Ru by Materials Project

URuB4 crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. U4+ is bonded in a 2-coordinate geometry to fourteen B+1.50- atoms. There are a spread of U–B bond distances ranging from 2.63–2.75 Å. Ru2+ is bonded in a 10-coordinate geometry to ten B+1.50- atoms. There are a spread of Ru–B bond distances ranging from 2.26–2.40 Å. There are three inequivalent B+1.50- sites. In the first B+1.50- site, B+1.50- is bonded in a 9-coordinate geometry to four equivalent U4+, two equivalent Ru2+, and three B+1.50- atoms. There are a spread of B–B bond distances ranging from 1.74–1.88 Å. In the second B+1.50- site, B+1.50- is bonded in a 9-coordinate geometry to four equivalent U4+, two equivalent Ru2+, and three B+1.50- atoms. The B–B bond length is 1.76 Å. In the third B+1.50- site, B+1.50- is bonded in a 9-coordinate geometry to two equivalent U4+, four equivalent Ru2+, and three B+1.50- atoms. The B–B bond length is 1.74 Å.

36 MATERIALS SCIENCE↗