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Materials Data on Sc7Cl12 by Materials Project

Sc7Cl12 crystallizes in the trigonal R-3 space group. The structure is three-dimensional. there are two inequivalent Sc sites. In the first Sc site, Sc is bonded to six equivalent Cl atoms to form edge-sharing ScCl6 octahedra. All Sc–Cl bond lengths are 2.56 Å. In the second Sc site, Sc is bonded to five Cl atoms to form ScCl5 square pyramids that share corners with six equivalent ScCl5 square pyramids, an edgeedge with one ScCl6 octahedra, and an edgeedge with one ScCl5 square pyramid. There are a spread of Sc–Cl bond distances ranging from 2.55–2.83 Å. There are two inequivalent Cl sites. In the first Cl site, Cl is bonded in a distorted T-shaped geometry to three equivalent Sc atoms. In the second Cl site, Cl is bonded in a distorted T-shaped geometry to three Sc atoms.

36 MATERIALS SCIENCE↗

Materials Data on ScCl3 by Materials Project

ScCl3 is Bismuth triodide structured and crystallizes in the trigonal R-3 space group. The structure is two-dimensional and consists of three ScCl3 sheets oriented in the (0, 0, 1) direction. Sc3+ is bonded to six equivalent Cl1- atoms to form edge-sharing ScCl6 octahedra. There are three shorter (2.50 Å) and three longer (2.51 Å) Sc–Cl bond lengths. Cl1- is bonded in an L-shaped geometry to two equivalent Sc3+ atoms.

36 MATERIALS SCIENCE↗

Materials Data on ScCl by Materials Project

ScCl crystallizes in the trigonal R-3m space group. The structure is two-dimensional and consists of six ScCl sheets oriented in the (0, 0, 1) direction. Sc is bonded in a 3-coordinate geometry to three equivalent Cl atoms. All Sc–Cl bond lengths are 2.60 Å. Cl is bonded in a distorted T-shaped geometry to three equivalent Sc atoms.

36 MATERIALS SCIENCE↗

Materials Data on Sc5Cl8 by Materials Project

Sc5Cl8 crystallizes in the monoclinic C2/m space group. The structure is two-dimensional and consists of two Sc5Cl8 sheets oriented in the (1, 0, 0) direction. there are three inequivalent Sc sites. In the first Sc site, Sc is bonded to six Cl atoms to form ScCl6 octahedra that share corners with four equivalent ScCl4 trigonal pyramids and edges with two equivalent ScCl6 octahedra. There are four shorter (2.52 Å) and two longer (2.63 Å) Sc–Cl bond lengths. In the second Sc site, Sc is bonded to four Cl atoms to form distorted ScCl4 trigonal pyramids that share corners with two equivalent ScCl6 octahedra and corners with two equivalent ScCl4 trigonal pyramids. The corner-sharing octahedral tilt angles are 44°. There are two shorter (2.51 Å) and two longer (2.61 Å) Sc–Cl bond lengths. In the third Sc site, Sc is bonded in a 4-coordinate geometry to four Cl atoms. All Sc–Cl bond lengths are 2.63 Å. There are four inequivalent Cl sites. In the first Cl site, Cl is bonded in a distorted T-shaped geometry to three Sc atoms. In the second Cl site, Cl is bonded in an L-shaped geometry to two equivalent Sc atoms. In the third Cl site, Cl is bonded in a distorted T-shaped geometry to three Sc atoms. In the fourth Cl site, Cl is bonded in a distorted T-shaped geometry to three Sc atoms.

36 MATERIALS SCIENCE↗