Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “Ir”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 811 records · Page 45

Materials Data on YIr2 by Materials Project

YIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Y is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Y–Ir bond lengths are 3.15 Å. Ir is bonded to six equivalent Y and six equivalent Ir atoms to form a mixture of face, edge, and corner-sharing IrY6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.68 Å.

36 MATERIALS SCIENCE↗

Materials Data on PuIr2 by Materials Project

PuIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Pu is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Pu–Ir bond lengths are 3.10 Å. Ir is bonded to six equivalent Pu and six equivalent Ir atoms to form a mixture of edge, face, and corner-sharing IrPu6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.64 Å.

36 MATERIALS SCIENCE↗

Materials Data on LaSi3Ir by Materials Project

LaIrSi3 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. La is bonded in a 12-coordinate geometry to five equivalent Ir and twelve Si atoms. All La–Ir bond lengths are 3.41 Å. There are a spread of La–Si bond distances ranging from 3.15–3.39 Å. Ir is bonded in a 5-coordinate geometry to five equivalent La and five Si atoms. All Ir–Si bond lengths are 2.40 Å. There are two inequivalent Si sites. In the first Si site, Si is bonded in a distorted bent 120 degrees geometry to four equivalent La, two equivalent Ir, and two equivalent Si atoms. Both Si–Si bond lengths are 2.61 Å. In the second Si site, Si is bonded in a distorted single-bond geometry to four equivalent La, one Ir, and four equivalent Si atoms.

36 MATERIALS SCIENCE↗

Materials Data on PaIr3 by Materials Project

PaIr3 is Uranium Silicide structured and crystallizes in the cubic Pm-3m space group. The structure is three-dimensional. Pa is bonded to twelve equivalent Ir atoms to form PaIr12 cuboctahedra that share corners with twelve equivalent PaIr12 cuboctahedra, edges with twenty-four equivalent IrPa4Ir8 cuboctahedra, faces with six equivalent PaIr12 cuboctahedra, and faces with twelve equivalent IrPa4Ir8 cuboctahedra. All Pa–Ir bond lengths are 2.89 Å. Ir is bonded to four equivalent Pa and eight equivalent Ir atoms to form distorted IrPa4Ir8 cuboctahedra that share corners with twelve equivalent IrPa4Ir8 cuboctahedra, edges with eight equivalent PaIr12 cuboctahedra, edges with sixteen equivalent IrPa4Ir8 cuboctahedra, faces with four equivalent PaIr12 cuboctahedra, and faces with fourteen equivalent IrPa4Ir8 cuboctahedra. All Ir–Ir bond lengths are 2.89 Å.

36 MATERIALS SCIENCE↗

Materials Data on TmIr2 by Materials Project

TmIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Tm is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Tm–Ir bond lengths are 3.13 Å. Ir is bonded to six equivalent Tm and six equivalent Ir atoms to form a mixture of face, edge, and corner-sharing IrTm6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.67 Å.

36 MATERIALS SCIENCE↗

Materials Data on IrW by Materials Project

WIr is beta-prime cadmium gold structured and crystallizes in the orthorhombic Pmma space group. The structure is three-dimensional. W is bonded to four equivalent W and eight equivalent Ir atoms to form WIr8W4 cuboctahedra that share corners with eight equivalent IrIr4W8 cuboctahedra, corners with ten equivalent WIr8W4 cuboctahedra, edges with six equivalent WIr8W4 cuboctahedra, edges with twelve equivalent IrIr4W8 cuboctahedra, faces with eight equivalent IrIr4W8 cuboctahedra, and faces with twelve equivalent WIr8W4 cuboctahedra. There are two shorter (2.78 Å) and two longer (2.80 Å) W–W bond lengths. There are a spread of W–Ir bond distances ranging from 2.75–2.82 Å. Ir is bonded to eight equivalent W and four equivalent Ir atoms to form IrIr4W8 cuboctahedra that share corners with eight equivalent WIr8W4 cuboctahedra, corners with ten equivalent IrIr4W8 cuboctahedra, edges with six equivalent IrIr4W8 cuboctahedra, edges with twelve equivalent WIr8W4 cuboctahedra, faces with eight equivalent WIr8W4 cuboctahedra, and faces with twelve equivalent IrIr4W8 cuboctahedra. There are two shorter (2.78 Å) and two longer (2.82 Å) Ir–Ir bond lengths.

36 MATERIALS SCIENCE↗

Materials Data on Ir3W by Materials Project

WIr3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. W is bonded to twelve equivalent Ir atoms to form WIr12 cuboctahedra that share corners with six equivalent WIr12 cuboctahedra, corners with twelve equivalent IrIr8W4 cuboctahedra, edges with eighteen equivalent IrIr8W4 cuboctahedra, faces with eight equivalent WIr12 cuboctahedra, and faces with twelve equivalent IrIr8W4 cuboctahedra. There are six shorter (2.74 Å) and six longer (2.78 Å) W–Ir bond lengths. Ir is bonded to four equivalent W and eight equivalent Ir atoms to form IrIr8W4 cuboctahedra that share corners with four equivalent WIr12 cuboctahedra, corners with fourteen equivalent IrIr8W4 cuboctahedra, edges with six equivalent WIr12 cuboctahedra, edges with twelve equivalent IrIr8W4 cuboctahedra, faces with four equivalent WIr12 cuboctahedra, and faces with sixteen equivalent IrIr8W4 cuboctahedra. There are a spread of Ir–Ir bond distances ranging from 2.74–2.78 Å.

36 MATERIALS SCIENCE↗

Materials Data on SrIr2 by Materials Project

SrIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Sr is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Sr–Ir bond lengths are 3.22 Å. Ir is bonded to six equivalent Sr and six equivalent Ir atoms to form a mixture of face, edge, and corner-sharing IrSr6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.74 Å.

36 MATERIALS SCIENCE↗

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↗

Materials Data on IrPb by Materials Project

IrPb crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Ir is bonded in a 8-coordinate geometry to two equivalent Ir and six equivalent Pb atoms. Both Ir–Ir bond lengths are 2.84 Å. All Ir–Pb bond lengths are 2.81 Å. Pb is bonded in a 6-coordinate geometry to six equivalent Ir atoms.

36 MATERIALS SCIENCE↗

Materials Data on CaIr2 by Materials Project

CaIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Ca is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Ca–Ir bond lengths are 3.15 Å. Ir is bonded to six equivalent Ca and six equivalent Ir atoms to form a mixture of corner, edge, and face-sharing IrCa6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.68 Å.

36 MATERIALS SCIENCE↗

Materials Data on CeIr2 by Materials Project

CeIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Ce is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Ce–Ir bond lengths are 3.16 Å. Ir is bonded to six equivalent Ce and six equivalent Ir atoms to form a mixture of edge, corner, and face-sharing IrCe6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.70 Å.

36 MATERIALS SCIENCE↗

Materials Data on Eu2Ga3Ir by Materials Project

Eu2IrGa3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Eu is bonded in a 12-coordinate geometry to three equivalent Ir and nine Ga atoms. There are two shorter (3.31 Å) and one longer (3.32 Å) Eu–Ir bond lengths. There are three shorter (3.13 Å) and six longer (3.34 Å) Eu–Ga bond lengths. Ir is bonded to six equivalent Eu and six Ga atoms to form IrEu6Ga6 cuboctahedra that share corners with twelve GaEu6Ga4Ir2 cuboctahedra, edges with six equivalent IrEu6Ga6 cuboctahedra, faces with two equivalent IrEu6Ga6 cuboctahedra, and faces with eighteen GaEu6Ga4Ir2 cuboctahedra. There are four shorter (2.69 Å) and two longer (2.70 Å) Ir–Ga bond lengths. There are two inequivalent Ga sites. In the first Ga site, Ga is bonded to six equivalent Eu, two equivalent Ir, and four equivalent Ga atoms to form distorted GaEu6Ga4Ir2 cuboctahedra that share corners with four equivalent IrEu6Ga6 cuboctahedra, corners with fourteen GaEu6Ga4Ir2 cuboctahedra, edges with six equivalent GaEu6Ga4Ir2 cuboctahedra, faces with six equivalent IrEu6Ga6 cuboctahedra, and faces with twelve equivalent GaEu6Ga4Ir2 cuboctahedra. There are two shorter (2.73 Å) and two longer (2.96 Å) Ga–Ga bond lengths. In the second Ga site, Ga is bonded to six equivalent Eu, two equivalent Ir, and four Ga atoms to form distorted GaEu6Ga4Ir2 cuboctahedra that share corners with four equivalent IrEu6Ga6 cuboctahedra, corners with fourteen GaEu6Ga4Ir2 cuboctahedra, edges with six equivalent GaEu6Ga4Ir2 cuboctahedra, faces with six equivalent IrEu6Ga6 cuboctahedra, and faces with twelve GaEu6Ga4Ir2 cuboctahedra. There are one shorter (2.71 Å) and one longer (2.98 Å) Ga–Ga bond lengths.

36 MATERIALS SCIENCE↗

Materials Data on EuGe2Ir by Materials Project

EuIrGe2 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. Eu is bonded in a 12-coordinate geometry to four equivalent Ir and ten Ge atoms. All Eu–Ir bond lengths are 3.36 Å. There are a spread of Eu–Ge bond distances ranging from 3.28–3.42 Å. Ir is bonded in a 9-coordinate geometry to four equivalent Eu and five Ge atoms. There are a spread of Ir–Ge bond distances ranging from 2.43–2.54 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 1-coordinate geometry to six equivalent Eu, one Ir, and two equivalent Ge atoms. Both Ge–Ge bond lengths are 2.59 Å. In the second Ge site, Ge is bonded in a 4-coordinate geometry to four equivalent Eu and four equivalent Ir atoms.

36 MATERIALS SCIENCE↗

Materials Data on ZrIr2 by Materials Project

ZrIr2 is Cubic Laves structured and crystallizes in the cubic Fd-3m space group. The structure is three-dimensional. Zr is bonded in a 12-coordinate geometry to twelve equivalent Ir atoms. All Zr–Ir bond lengths are 3.08 Å. Ir is bonded to six equivalent Zr and six equivalent Ir atoms to form a mixture of edge, face, and corner-sharing IrZr6Ir6 cuboctahedra. All Ir–Ir bond lengths are 2.63 Å.

36 MATERIALS SCIENCE↗

Materials Data on MnIr3 by Materials Project

MnIr3 is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Mn is bonded to twelve equivalent Ir atoms to form MnIr12 cuboctahedra that share corners with six equivalent MnIr12 cuboctahedra, corners with twelve equivalent IrMn4Ir8 cuboctahedra, edges with eighteen equivalent IrMn4Ir8 cuboctahedra, faces with eight equivalent MnIr12 cuboctahedra, and faces with twelve equivalent IrMn4Ir8 cuboctahedra. There are six shorter (2.67 Å) and six longer (2.73 Å) Mn–Ir bond lengths. Ir is bonded to four equivalent Mn and eight equivalent Ir atoms to form distorted IrMn4Ir8 cuboctahedra that share corners with four equivalent MnIr12 cuboctahedra, corners with fourteen equivalent IrMn4Ir8 cuboctahedra, edges with six equivalent MnIr12 cuboctahedra, edges with twelve equivalent IrMn4Ir8 cuboctahedra, faces with four equivalent MnIr12 cuboctahedra, and faces with sixteen equivalent IrMn4Ir8 cuboctahedra. There are six shorter (2.69 Å) and two longer (2.76 Å) Ir–Ir bond lengths.

36 MATERIALS SCIENCE↗

Materials Data on VIr3 by Materials Project

Ir3V is Uranium Silicide-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. V is bonded to twelve equivalent Ir atoms to form VIr12 cuboctahedra that share corners with six equivalent VIr12 cuboctahedra, corners with twelve equivalent IrV4Ir8 cuboctahedra, edges with eighteen equivalent IrV4Ir8 cuboctahedra, faces with eight equivalent VIr12 cuboctahedra, and faces with twelve equivalent IrV4Ir8 cuboctahedra. There are six shorter (2.69 Å) and six longer (2.73 Å) V–Ir bond lengths. Ir is bonded to four equivalent V and eight equivalent Ir atoms to form distorted IrV4Ir8 cuboctahedra that share corners with four equivalent VIr12 cuboctahedra, corners with fourteen equivalent IrV4Ir8 cuboctahedra, edges with six equivalent VIr12 cuboctahedra, edges with twelve equivalent IrV4Ir8 cuboctahedra, faces with four equivalent VIr12 cuboctahedra, and faces with sixteen equivalent IrV4Ir8 cuboctahedra. There are a spread of Ir–Ir bond distances ranging from 2.69–2.75 Å.

36 MATERIALS SCIENCE↗

Materials Data on TcIr3 by Materials Project

TcIr3 is beta Cu3Ti-like structured and crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Tc is bonded to twelve equivalent Ir atoms to form TcIr12 cuboctahedra that share corners with six equivalent TcIr12 cuboctahedra, corners with twelve equivalent IrTc4Ir8 cuboctahedra, edges with eighteen equivalent IrTc4Ir8 cuboctahedra, faces with eight equivalent TcIr12 cuboctahedra, and faces with twelve equivalent IrTc4Ir8 cuboctahedra. There are six shorter (2.71 Å) and six longer (2.76 Å) Tc–Ir bond lengths. Ir is bonded to four equivalent Tc and eight equivalent Ir atoms to form distorted IrTc4Ir8 cuboctahedra that share corners with four equivalent TcIr12 cuboctahedra, corners with fourteen equivalent IrTc4Ir8 cuboctahedra, edges with six equivalent TcIr12 cuboctahedra, edges with twelve equivalent IrTc4Ir8 cuboctahedra, faces with four equivalent TcIr12 cuboctahedra, and faces with sixteen equivalent IrTc4Ir8 cuboctahedra. There are a spread of Ir–Ir bond distances ranging from 2.71–2.77 Å.

36 MATERIALS SCIENCE↗