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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on GeIr by Materials Project

IrGe is Modderite structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. Ir is bonded to six equivalent Ge atoms to form a mixture of distorted face, edge, and corner-sharing IrGe6 octahedra. The corner-sharing octahedra tilt angles range from 46–56°. There are a spread of Ir–Ge bond distances ranging from 2.51–2.62 Å. Ge is bonded in a 6-coordinate geometry to six equivalent Ir atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ge4Ir by Materials Project

IrGe4 crystallizes in the trigonal P3_1 space group. The structure is three-dimensional. Ir is bonded in a 8-coordinate geometry to eight Ge atoms. There are a spread of Ir–Ge bond distances ranging from 2.55–2.64 Å. There are four inequivalent Ge sites. In the first Ge site, Ge is bonded in a 4-coordinate geometry to two equivalent Ir and three Ge atoms. There are two shorter (2.61 Å) and one longer (2.90 Å) Ge–Ge bond lengths. In the second Ge site, Ge is bonded in a 2-coordinate geometry to two equivalent Ir and seven Ge atoms. There are a spread of Ge–Ge bond distances ranging from 2.77–2.87 Å. In the third Ge site, Ge is bonded in a 2-coordinate geometry to two equivalent Ir and three Ge atoms. In the fourth Ge site, Ge is bonded in a 2-coordinate geometry to two equivalent Ir and three Ge atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ge7Ir3 by Materials Project

Ir3Ge7 crystallizes in the cubic Im-3m space group. The structure is three-dimensional. Ir is bonded in a 8-coordinate geometry to eight Ge atoms. There are four shorter (2.58 Å) and four longer (2.61 Å) Ir–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 8-coordinate geometry to four equivalent Ir atoms. In the second Ge site, Ge is bonded to three equivalent Ir and one Ge atom to form a mixture of distorted edge and corner-sharing GeGeIr3 tetrahedra. The Ge–Ge bond length is 2.52 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ge5Ir4 by Materials Project

Ir4Ge5 crystallizes in the tetragonal P-4c2 space group. The structure is three-dimensional. there are five inequivalent Ir sites. In the first Ir site, Ir is bonded in a 6-coordinate geometry to six Ge atoms. There are a spread of Ir–Ge bond distances ranging from 2.46–2.68 Å. In the second Ir site, Ir is bonded to six Ge atoms to form distorted corner-sharing IrGe6 octahedra. The corner-sharing octahedra tilt angles range from 41–56°. There are four shorter (2.48 Å) and two longer (2.60 Å) Ir–Ge bond lengths. In the third Ir site, Ir is bonded in a 4-coordinate geometry to four equivalent Ge atoms. All Ir–Ge bond lengths are 2.47 Å. In the fourth Ir site, Ir is bonded to six Ge atoms to form a mixture of distorted edge and corner-sharing IrGe6 octahedra. The corner-sharing octahedra tilt angles range from 47–56°. There are a spread of Ir–Ge bond distances ranging from 2.45–2.56 Å. In the fifth Ir site, Ir is bonded to six Ge atoms to form a mixture of distorted edge and corner-sharing IrGe6 octahedra. The corner-sharing octahedra tilt angles range from 41–55°. There are a spread of Ir–Ge bond distances ranging from 2.42–2.60 Å. There are three inequivalent Ge sites. In the first Ge site, Ge is bonded in a 5-coordinate geometry to five Ir atoms. In the second Ge site, Ge is bonded in a 5-coordinate geometry to five Ir atoms. In the third Ge site, Ge is bonded in a 4-coordinate geometry to four Ir atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ge3Ir by Materials Project

IrGe3 is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Ir is bonded in a body-centered cubic geometry to fourteen Ge atoms. There are eight shorter (2.78 Å) and six longer (3.21 Å) Ir–Ge bond lengths. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a body-centered cubic geometry to four equivalent Ir and four equivalent Ge atoms. All Ge–Ge bond lengths are 2.78 Å. In the second Ge site, Ge is bonded in a 8-coordinate geometry to six equivalent Ir and eight equivalent Ge atoms.

36 MATERIALS SCIENCE↗