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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on LaGeI by Materials Project

LaGeI crystallizes in the trigonal P-3m1 space group. The structure is two-dimensional and consists of one LaGeI sheet oriented in the (0, 0, 1) direction. La is bonded in a 9-coordinate geometry to six equivalent Ge and three equivalent I atoms. There are three shorter (3.21 Å) and three longer (3.36 Å) La–Ge bond lengths. All La–I bond lengths are 3.31 Å. Ge is bonded in a 9-coordinate geometry to six equivalent La and three equivalent Ge atoms. All Ge–Ge bond lengths are 2.57 Å. I is bonded in a distorted T-shaped geometry to three equivalent La atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on La2GeI2 by Materials Project

La2GeI2 crystallizes in the trigonal P-3m1 space group. The structure is two-dimensional and consists of one La2GeI2 sheet oriented in the (0, 0, 1) direction. La is bonded to three equivalent Ge and three equivalent I atoms to form a mixture of edge and corner-sharing LaGe3I3 octahedra. The corner-sharing octahedral tilt angles are 0°. All La–Ge bond lengths are 3.10 Å. All La–I bond lengths are 3.31 Å. Ge is bonded to six equivalent La atoms to form edge-sharing GeLa6 octahedra. I is bonded in a distorted T-shaped geometry to three equivalent La atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on La2GeI2 by Materials Project

La2GeI2 crystallizes in the trigonal R-3m space group. The structure is two-dimensional and consists of three La2GeI2 sheets oriented in the (0, 0, 1) direction. La is bonded to three equivalent Ge and three equivalent I atoms to form a mixture of edge and corner-sharing LaGe3I3 octahedra. The corner-sharing octahedral tilt angles are 0°. All La–Ge bond lengths are 3.10 Å. All La–I bond lengths are 3.32 Å. Ge is bonded to six equivalent La atoms to form edge-sharing GeLa6 octahedra. I is bonded in a distorted T-shaped geometry to three equivalent La atoms.

36 MATERIALS SCIENCE↗