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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Hf(VGa2)2 by Materials Project

HfV2Ga4 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Hf is bonded in a distorted square co-planar geometry to twelve Ga atoms. There are four shorter (2.76 Å) and eight longer (3.16 Å) Hf–Ga bond lengths. V is bonded in a 10-coordinate geometry to two equivalent V and eight Ga atoms. Both V–V bond lengths are 2.59 Å. All V–Ga bond lengths are 2.67 Å. There are five inequivalent Ga sites. In the first Ga site, Ga is bonded in a 11-coordinate geometry to three equivalent Hf, four equivalent V, and four Ga atoms. There are two shorter (2.56 Å) and two longer (2.76 Å) Ga–Ga bond lengths. In the second Ga site, Ga is bonded in a 11-coordinate geometry to three equivalent Hf, four equivalent V, and four Ga atoms. The Ga–Ga bond length is 2.56 Å. In the third Ga site, Ga is bonded in a 11-coordinate geometry to three equivalent Hf, four equivalent V, and four Ga atoms. The Ga–Ga bond length is 2.56 Å. In the fourth Ga site, Ga is bonded in a 11-coordinate geometry to three equivalent Hf, four equivalent V, and four Ga atoms. There are two shorter (2.56 Å) and two longer (2.76 Å) Ga–Ga bond lengths. In the fifth Ga site, Ga is bonded in a 11-coordinate geometry to three equivalent Hf, four equivalent V, and four Ga atoms. There are one shorter (2.56 Å) and two longer (2.76 Å) Ga–Ga bond lengths.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Hf3(VGa3)2 by Materials Project

Hf3(VGa3)2 crystallizes in the orthorhombic Pmmn space group. The structure is three-dimensional. there are two inequivalent Hf sites. In the first Hf site, Hf is bonded in a 11-coordinate geometry to two equivalent V and nine Ga atoms. Both Hf–V bond lengths are 3.02 Å. There are a spread of Hf–Ga bond distances ranging from 2.84–3.02 Å. In the second Hf site, Hf is bonded in a 7-coordinate geometry to four equivalent V and seven Ga atoms. All Hf–V bond lengths are 3.09 Å. There are a spread of Hf–Ga bond distances ranging from 2.74–2.94 Å. V is bonded to four Hf, two equivalent V, and six Ga atoms to form a mixture of distorted edge, face, and corner-sharing VHf4V2Ga6 cuboctahedra. Both V–V bond lengths are 2.69 Å. There are a spread of V–Ga bond distances ranging from 2.56–2.79 Å. There are four inequivalent Ga sites. In the first Ga site, Ga is bonded in a 8-coordinate geometry to four Hf, two equivalent V, and two equivalent Ga atoms. Both Ga–Ga bond lengths are 2.63 Å. In the second Ga site, Ga is bonded in a 1-coordinate geometry to three Hf, four equivalent V, and two equivalent Ga atoms. Both Ga–Ga bond lengths are 2.85 Å. In the third Ga site, Ga is bonded in a 12-coordinate geometry to four Hf and four equivalent V atoms. In the fourth Ga site, Ga is bonded in a 10-coordinate geometry to five Hf and five Ga atoms. There are one shorter (2.58 Å) and one longer (2.80 Å) Ga–Ga bond lengths.

36 MATERIALS SCIENCE↗