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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Li3Ce5Ge4 by Materials Project

Li3Ce5Ge4 crystallizes in the orthorhombic Amm2 space group. The structure is three-dimensional. there are three inequivalent Li sites. In the first Li site, Li is bonded in a distorted L-shaped geometry to two equivalent Ce and two equivalent Ge atoms. Both Li–Ce bond lengths are 3.22 Å. Both Li–Ge bond lengths are 2.60 Å. In the second Li site, Li is bonded in a distorted L-shaped geometry to two equivalent Li, two equivalent Ce, and two equivalent Ge atoms. Both Li–Li bond lengths are 2.71 Å. Both Li–Ce bond lengths are 3.45 Å. Both Li–Ge bond lengths are 2.59 Å. In the third Li site, Li is bonded in a 4-coordinate geometry to two equivalent Li and four Ce atoms. There are two shorter (3.35 Å) and two longer (3.58 Å) Li–Ce bond lengths. There are five inequivalent Ce sites. In the first Ce site, Ce is bonded in a 6-coordinate geometry to two equivalent Li, two equivalent Ce, and four equivalent Ge atoms. Both Ce–Ce bond lengths are 2.81 Å. All Ce–Ge bond lengths are 3.06 Å. In the second Ce site, Ce is bonded in a 4-coordinate geometry to eight Ge atoms. There are four shorter (3.05 Å) and four longer (3.29 Å) Ce–Ge bond lengths. In the third Ce site, Ce is bonded in a 4-coordinate geometry to four Li, two equivalent Ce, and two equivalent Ge atoms. Both Ce–Ge bond lengths are 3.46 Å. In the fourth Ce site, Ce is bonded in a 4-coordinate geometry to eight Ge atoms. There are four shorter (3.04 Å) and four longer (3.28 Å) Ce–Ge bond lengths. In the fifth Ce site, Ce is bonded in a 6-coordinate geometry to two equivalent Li and four equivalent Ge atoms. All Ce–Ge bond lengths are 3.04 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 1-coordinate geometry to one Li, seven Ce, and one Ge atom. The Ge–Ge bond length is 2.82 Å. In the second Ge site, Ge is bonded in a 1-coordinate geometry to one Li, six Ce, and two Ge atoms. The Ge–Ge bond length is 2.55 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LiCeGe2 by Materials Project

LiCeGe2 crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Li is bonded in a 5-coordinate geometry to five Ge atoms. There are a spread of Li–Ge bond distances ranging from 2.56–2.75 Å. Ce is bonded in a 6-coordinate geometry to nine Ge atoms. There are a spread of Ce–Ge bond distances ranging from 3.10–3.46 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 1-coordinate geometry to two equivalent Li, five equivalent Ce, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.55 Å. In the second Ge site, Ge is bonded in a 9-coordinate geometry to three equivalent Li, four equivalent Ce, and two equivalent Ge atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Li2CeGe by Materials Project

Li2CeGe crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Li is bonded in a distorted body-centered cubic geometry to one Li, three equivalent Ce, and four equivalent Ge atoms. The Li–Li bond length is 2.15 Å. All Li–Ce bond lengths are 2.87 Å. There are one shorter (2.64 Å) and three longer (2.97 Å) Li–Ge bond lengths. Ce is bonded to six equivalent Li and six equivalent Ge atoms to form a mixture of distorted face and corner-sharing CeLi6Ge6 cuboctahedra. All Ce–Ge bond lengths are 3.33 Å. Ge is bonded in a 2-coordinate geometry to eight equivalent Li and six equivalent Ce atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Li2Ce2Ge3 by Materials Project

Ce2Li2Ge3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Li is bonded to three equivalent Ce and four Ge atoms to form a mixture of distorted edge, face, and corner-sharing LiCe3Ge4 tetrahedra. There are one shorter (3.13 Å) and two longer (3.16 Å) Li–Ce bond lengths. There are a spread of Li–Ge bond distances ranging from 2.54–2.71 Å. There are two inequivalent Ce sites. In the first Ce site, Ce is bonded in a 12-coordinate geometry to six equivalent Li and six Ge atoms. There are four shorter (3.10 Å) and two longer (3.20 Å) Ce–Ge bond lengths. In the second Ce site, Ce is bonded in a 5-coordinate geometry to nine Ge atoms. There are a spread of Ce–Ge bond distances ranging from 3.11–3.33 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 6-coordinate geometry to six equivalent Li and three Ce atoms. In the second Ge site, Ge is bonded in a 1-coordinate geometry to one Li, six Ce, and two equivalent Ge atoms. There are one shorter (2.52 Å) and one longer (2.55 Å) Ge–Ge bond lengths.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Li8Ce7Ge10 by Materials Project

Li8Ce7Ge10 crystallizes in the orthorhombic Cmmm space group. The structure is three-dimensional. there are two inequivalent Li sites. In the first Li site, Li is bonded to three Ce and four Ge atoms to form distorted LiCe3Ge4 tetrahedra that share corners with five equivalent LiCe3Ge4 tetrahedra, edges with two equivalent CeGe6 octahedra, edges with six LiCe3Ge4 tetrahedra, and faces with four LiCe3Ge4 tetrahedra. There are two shorter (3.13 Å) and one longer (3.17 Å) Li–Ce bond lengths. There are a spread of Li–Ge bond distances ranging from 2.64–2.69 Å. In the second Li site, Li is bonded to three Ce and four Ge atoms to form distorted LiCe3Ge4 tetrahedra that share a cornercorner with one CeGe6 octahedra, corners with four equivalent LiCe3Ge4 tetrahedra, edges with six LiCe3Ge4 tetrahedra, and faces with four LiCe3Ge4 tetrahedra. The corner-sharing octahedral tilt angles are 53°. There are one shorter (3.14 Å) and two longer (3.15 Å) Li–Ce bond lengths. There are a spread of Li–Ge bond distances ranging from 2.53–2.67 Å. There are four inequivalent Ce sites. In the first Ce site, Ce is bonded in a 6-coordinate geometry to six Li and six Ge atoms. There are four shorter (3.09 Å) and two longer (3.19 Å) Ce–Ge bond lengths. In the second Ce site, Ce is bonded in a 5-coordinate geometry to nine Ge atoms. There are a spread of Ce–Ge bond distances ranging from 3.09–3.33 Å. In the third Ce site, Ce is bonded in a 12-coordinate geometry to six Li and six Ge atoms. There are four shorter (3.18 Å) and two longer (3.20 Å) Ce–Ge bond lengths. In the fourth Ce site, Ce is bonded to six Ge atoms to form CeGe6 octahedra that share corners with four equivalent LiCe3Ge4 tetrahedra, edges with two equivalent CeGe6 octahedra, and edges with eight equivalent LiCe3Ge4 tetrahedra. There are four shorter (3.07 Å) and two longer (3.12 Å) Ce–Ge bond lengths. There are four inequivalent Ge sites. In the first Ge site, Ge is bonded in a 6-coordinate geometry to six Li and three Ce atoms. In the second Ge site, Ge is bonded in a 6-coordinate geometry to six Li and three Ce atoms. In the third Ge site, Ge is bonded in a 2-coordinate geometry to two equivalent Li, six Ce, and one Ge atom. The Ge–Ge bond length is 2.57 Å. In the fourth Ge site, Ge is bonded in a 1-coordinate geometry to one Li, six Ce, and two equivalent Ge atoms. There are one shorter (2.50 Å) and one longer (2.53 Å) Ge–Ge bond lengths.

36 MATERIALS SCIENCE↗