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DOE OSTI2020

Materials Data on Th(SiNi)2 by Materials Project

Th(NiSi)2 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Th4+ is bonded in a distorted body-centered cubic geometry to eight equivalent Si4- atoms. All Th–Si bond lengths are 3.14 Å. Ni2+ is bonded to four equivalent Si4- atoms to form a mixture of edge and corner-sharing NiSi4 tetrahedra. All Ni–Si bond lengths are 2.34 Å. Si4- is bonded in a 9-coordinate geometry to four equivalent Th4+, four equivalent Ni2+, and one Si4- atom. The Si–Si bond length is 2.47 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ThSi2Ni by Materials Project

ThNiSi2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Th4+ is bonded in a 10-coordinate geometry to ten Si4- atoms. There are six shorter (3.12 Å) and four longer (3.15 Å) Th–Si bond lengths. Ni4+ is bonded in a 5-coordinate geometry to five Si4- atoms. There are a spread of Ni–Si bond distances ranging from 2.32–2.36 Å. There are two inequivalent Si4- sites. In the first Si4- site, Si4- is bonded in a 9-coordinate geometry to six equivalent Th4+, one Ni4+, and two equivalent Si4- atoms. Both Si–Si bond lengths are 2.43 Å. In the second Si4- site, Si4- is bonded in a 8-coordinate geometry to four equivalent Th4+ and four equivalent Ni4+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Th2Si3Ni by Materials Project

Th2NiSi3 crystallizes in the hexagonal P-6m2 space group. The structure is three-dimensional. Th4+ is bonded in a distorted q4 geometry to nine Si4- atoms. There are three shorter (3.09 Å) and six longer (3.15 Å) Th–Si bond lengths. Ni4+ is bonded in a trigonal planar geometry to three equivalent Si4- atoms. All Ni–Si bond lengths are 2.36 Å. There are three inequivalent Si4- sites. In the first Si4- site, Si4- is bonded in a 9-coordinate geometry to six equivalent Th4+ and three equivalent Si4- atoms. All Si–Si bond lengths are 2.36 Å. In the second Si4- site, Si4- is bonded in a 9-coordinate geometry to six equivalent Th4+ and three equivalent Ni4+ atoms. In the third Si4- site, Si4- is bonded in a 9-coordinate geometry to six equivalent Th4+ and three equivalent Si4- atoms.

36 MATERIALS SCIENCE↗