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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on HoCd2 by Materials Project

HoCd2 crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Ho is bonded to two equivalent Ho and twelve equivalent Cd atoms to form a mixture of distorted edge, corner, and face-sharing HoHo2Cd12 cuboctahedra. Both Ho–Ho bond lengths are 3.44 Å. All Ho–Cd bond lengths are 3.34 Å. Cd is bonded in a 11-coordinate geometry to six equivalent Ho and five equivalent Cd atoms. There are three shorter (2.87 Å) and two longer (3.44 Å) Cd–Cd bond lengths.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HoCd2 by Materials Project

HoCd2 crystallizes in the trigonal P-3m1 space group. The structure is three-dimensional. Ho is bonded to two equivalent Ho and six equivalent Cd atoms to form HoHo2Cd6 hexagonal bipyramids that share corners with two equivalent HoHo2Cd6 hexagonal bipyramids, corners with six equivalent CdHo3Cd5 hexagonal bipyramids, edges with six equivalent HoHo2Cd6 hexagonal bipyramids, and edges with eighteen equivalent CdHo3Cd5 hexagonal bipyramids. Both Ho–Ho bond lengths are 3.24 Å. All Ho–Cd bond lengths are 3.14 Å. Cd is bonded to three equivalent Ho and five equivalent Cd atoms to form distorted CdHo3Cd5 hexagonal bipyramids that share corners with three equivalent HoHo2Cd6 hexagonal bipyramids, corners with five equivalent CdHo3Cd5 hexagonal bipyramids, edges with nine equivalent HoHo2Cd6 hexagonal bipyramids, and edges with fifteen equivalent CdHo3Cd5 hexagonal bipyramids. There are three shorter (3.15 Å) and two longer (3.24 Å) Cd–Cd bond lengths.

36 MATERIALS SCIENCE↗