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Materials Data on Al23B50 by Materials Project

Al23B50 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are twelve inequivalent Al sites. In the first Al site, Al is bonded to twelve B atoms to form a mixture of edge and face-sharing AlB12 cuboctahedra. There are a spread of Al–B bond distances ranging from 2.31–2.47 Å. In the second Al site, Al is bonded to twelve B atoms to form a mixture of edge and face-sharing AlB12 cuboctahedra. There are a spread of Al–B bond distances ranging from 2.31–2.48 Å. In the third Al site, Al is bonded to twelve B atoms to form a mixture of edge and face-sharing AlB12 cuboctahedra. There are a spread of Al–B bond distances ranging from 2.34–2.42 Å. In the fourth Al site, Al is bonded to twelve B atoms to form a mixture of edge and face-sharing AlB12 cuboctahedra. There are a spread of Al–B bond distances ranging from 2.29–2.47 Å. In the fifth Al site, Al is bonded to twelve B atoms to form a mixture of edge and face-sharing AlB12 cuboctahedra. There are a spread of Al–B bond distances ranging from 2.31–2.47 Å. In the sixth Al site, Al is bonded to twelve B atoms to form a mixture of edge and face-sharing AlB12 cuboctahedra. There are a spread of Al–B bond distances ranging from 2.31–2.48 Å. In the seventh Al site, Al is bonded to twelve B atoms to form a mixture of edge and face-sharing AlB12 cuboctahedra. There are a spread of Al–B bond distances ranging from 2.34–2.40 Å. In the eighth Al site, Al is bonded to twelve B atoms to form a mixture of edge and face-sharing AlB12 cuboctahedra. There are a spread of Al–B bond distances ranging from 2.33–2.44 Å. In the ninth Al site, Al is bonded to twelve B atoms to form a mixture of edge and face-sharing AlB12 cuboctahedra. There are a spread of Al–B bond distances ranging from 2.29–2.44 Å. In the tenth Al site, Al is bonded to twelve B atoms to form a mixture of edge and face-sharing AlB12 cuboctahedra. There are a spread of Al–B bond distances ranging from 2.31–2.44 Å. In the eleventh Al site, Al is bonded to twelve B atoms to form a mixture of edge and face-sharing AlB12 cuboctahedra. There are a spread of Al–B bond distances ranging from 2.33–2.41 Å. In the twelfth Al site, Al is bonded to twelve B atoms to form a mixture of edge and face-sharing AlB12 cuboctahedra. There are a spread of Al–B bond distances ranging from 2.35–2.41 Å. There are twenty-five inequivalent B sites. In the first B site, B is bonded in a 9-coordinate geometry to six Al and three B atoms. There is two shorter (1.73 Å) and one longer (1.74 Å) B–B bond length. In the second B site, B is bonded in a 8-coordinate geometry to five Al and three B atoms. There is one shorter (1.73 Å) and one longer (1.74 Å) B–B bond length. In the third B site, B is bonded in a 8-coordinate geometry to five Al and three B atoms. There is one shorter (1.73 Å) and two longer (1.74 Å) B–B bond length. In the fourth B site, B is bonded in a 9-coordinate geometry to six Al and three B atoms. There is one shorter (1.73 Å) and one longer (1.74 Å) B–B bond length. In the fifth B site, B is bonded in a 8-coordinate geometry to five Al and three B atoms. The B–B bond length is 1.74 Å. In the sixth B site, B is bonded in a 8-coordinate geometry to five Al and three B atoms. All B–B bond lengths are 1.73 Å. In the seventh B site, B is bonded in a 9-coordinate geometry to six Al and three B atoms. There is one shorter (1.73 Å) and one longer (1.74 Å) B–B bond length. In the eighth B site, B is bonded in a 9-coordinate geometry to six Al and three B atoms. Both B–B bond lengths are 1.73 Å. In the ninth B site, B is bonded in a 9-coordinate geometry to six Al and three B atoms. There is one shorter (1.73 Å) and one longer (1.74 Å) B–B bond length. In the tenth B site, B is bonded in a 8-coordinate geometry to five Al and three B atoms. There is one shorter (1.73 Å) and one longer (1.75 Å) B–B bond length. In the eleventh B site, B is bonded in a 8-coordinate geometry to five Al and three B atoms. The B–B bond length is 1.73 Å. In the twelfth B site, B is bonded in a 8-coordinate geometry to five Al and three B atoms. There is one shorter (1.73 Å) and one longer (1.74 Å) B–B bond length. In the thirteenth B site, B is bonded in a 8-coordinate geometry to five Al and three B atoms. The B–B bond length is 1.76 Å. In the fourteenth B site, B is bonded in a 9-coordinate geometry to six Al and three B atoms. There is one shorter (1.72 Å) and one longer (1.73 Å) B–B bond length. In the fifteenth B site, B is bonded in a 9-coordinate geometry to six Al and three B atoms. The B–B bond length is 1.73 Å. In the sixteenth B site, B is bonded in a 9-coordinate geometry to six Al and three B atoms. There is one shorter (1.73 Å) and one longer (1.74 Å) B–B bond length. In the seventeenth B site, B is bonded in a 8-coordinate geometry to five Al and three B atoms. The B–B bond length is 1.74 Å. In the eighteenth B site, B is bonded in a 9-coordinate geometry to six Al and three B atoms. The B–B bond length is 1.73 Å. In the nineteenth B site, B is bonded in a 9-coordinate geometry to six Al and three B atoms. The B–B bond length is 1.73 Å. In the twentieth B site, B is bonded in a 8-coordinate geometry to five Al and three B atoms. There is one shorter (1.73 Å) and one longer (1.75 Å) B–B bond length. In the twenty-first B site, B is bonded in a 8-coordinate geometry to five Al and three B atoms. In the twenty-second B site, B is bonded in a 9-coordinate geometry to six Al and three B atoms. There is one shorter (1.72 Å) and one longer (1.73 Å) B–B bond length. In the twenty-third B site, B is bonded in a 9-coordinate geometry to six Al and three B atoms. In the twenty-fourth B site, B is bonded in a 8-coordinate geometry to five Al and three B atoms. In the twenty-fifth B site, B is bonded in a 9-coordinate geometry to six Al and three B atoms. The B–B bond length is 1.73 Å.

36 MATERIALS SCIENCE↗

Materials Data on AlB2 by Materials Project

AlB2 is hexagonal omega structure structured and crystallizes in the hexagonal P6/mmm space group. The structure is three-dimensional. Al is bonded to twelve equivalent B atoms to form a mixture of edge and face-sharing AlB12 cuboctahedra. All Al–B bond lengths are 2.39 Å. B is bonded in a 9-coordinate geometry to six equivalent Al and three equivalent B atoms. All B–B bond lengths are 1.74 Å.

36 MATERIALS SCIENCE↗

Materials Data on BeAl3 by Materials Project

BeAl3 is alpha La-derived structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. Be is bonded to twelve Al atoms to form BeAl12 cuboctahedra that share corners with four equivalent BeAl12 cuboctahedra, corners with eight equivalent AlBe4Al8 cuboctahedra, edges with eight equivalent BeAl12 cuboctahedra, edges with sixteen equivalent AlBe4Al8 cuboctahedra, faces with four equivalent BeAl12 cuboctahedra, and faces with fourteen AlBe4Al8 cuboctahedra. There are eight shorter (2.74 Å) and four longer (2.75 Å) Be–Al bond lengths. There are two inequivalent Al sites. In the first Al site, Al is bonded to four equivalent Be and eight Al atoms to form AlBe4Al8 cuboctahedra that share corners with twelve equivalent AlBe4Al8 cuboctahedra, edges with eight equivalent BeAl12 cuboctahedra, edges with sixteen AlBe4Al8 cuboctahedra, faces with four equivalent BeAl12 cuboctahedra, and faces with fourteen AlBe4Al8 cuboctahedra. There are four shorter (2.74 Å) and four longer (2.75 Å) Al–Al bond lengths. In the second Al site, Al is bonded to four equivalent Be and eight equivalent Al atoms to form AlBe4Al8 cuboctahedra that share corners with four equivalent AlBe4Al8 cuboctahedra, corners with eight equivalent BeAl12 cuboctahedra, edges with twenty-four AlBe4Al8 cuboctahedra, faces with six equivalent BeAl12 cuboctahedra, and faces with twelve AlBe4Al8 cuboctahedra.

36 MATERIALS SCIENCE↗