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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on LaCu5 by Materials Project

LaCu5 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. La is bonded in a 6-coordinate geometry to eighteen Cu atoms. There are six shorter (2.98 Å) and twelve longer (3.31 Å) La–Cu bond lengths. There are two inequivalent Cu sites. In the first Cu site, Cu is bonded to four equivalent La and eight Cu atoms to form a mixture of corner, edge, and face-sharing CuLa4Cu8 cuboctahedra. There are four shorter (2.55 Å) and four longer (2.58 Å) Cu–Cu bond lengths. In the second Cu site, Cu is bonded in a 12-coordinate geometry to three equivalent La and six equivalent Cu atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LaCu6 by Materials Project

LaCu6 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. La is bonded in a 12-coordinate geometry to nineteen Cu atoms. There are a spread of La–Cu bond distances ranging from 2.91–3.40 Å. There are six inequivalent Cu sites. In the first Cu site, Cu is bonded to three equivalent La and nine Cu atoms to form a mixture of distorted corner, edge, and face-sharing CuLa3Cu9 cuboctahedra. There are a spread of Cu–Cu bond distances ranging from 2.45–2.72 Å. In the second Cu site, Cu is bonded to three equivalent La and nine Cu atoms to form a mixture of distorted corner, edge, and face-sharing CuLa3Cu9 cuboctahedra. There are a spread of Cu–Cu bond distances ranging from 2.45–2.81 Å. In the third Cu site, Cu is bonded in a 12-coordinate geometry to four equivalent La and nine Cu atoms. There are a spread of Cu–Cu bond distances ranging from 2.56–2.90 Å. In the fourth Cu site, Cu is bonded to three equivalent La and nine Cu atoms to form a mixture of corner, edge, and face-sharing CuLa3Cu9 cuboctahedra. There are a spread of Cu–Cu bond distances ranging from 2.51–2.62 Å. In the fifth Cu site, Cu is bonded in a 3-coordinate geometry to three equivalent La and six Cu atoms. In the sixth Cu site, Cu is bonded in a 12-coordinate geometry to three equivalent La and six Cu atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on LaCu13 by Materials Project

LaCu13 crystallizes in the cubic Fm-3c space group. The structure is three-dimensional. La is bonded in a 1-coordinate geometry to twenty-four equivalent Cu atoms. All La–Cu bond lengths are 3.38 Å. There are two inequivalent Cu sites. In the first Cu site, Cu is bonded to twelve equivalent Cu atoms to form a mixture of corner and face-sharing CuCu12 cuboctahedra. All Cu–Cu bond lengths are 2.49 Å. In the second Cu site, Cu is bonded to two equivalent La and ten Cu atoms to form distorted CuLa2Cu10 cuboctahedra that share corners with twenty-eight CuCu12 cuboctahedra, edges with eight equivalent CuLa2Cu10 cuboctahedra, and faces with twenty-five CuCu12 cuboctahedra. There are a spread of Cu–Cu bond distances ranging from 2.46–2.71 Å.

36 MATERIALS SCIENCE↗