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Materials Data on BaN3Cl by Materials Project

BaN3Cl crystallizes in the monoclinic P2_1/m space group. The structure is three-dimensional. Ba2+ is bonded in a 9-coordinate geometry to five N+0.33- and four equivalent Cl1- atoms. There are a spread of Ba–N bond distances ranging from 2.99–3.02 Å. There are a spread of Ba–Cl bond distances ranging from 3.16–3.21 Å. There are three inequivalent N+0.33- sites. In the first N+0.33- site, N+0.33- is bonded to three equivalent Ba2+ and one N+0.33- atom to form NBa3N tetrahedra that share corners with two equivalent NBa3N tetrahedra, corners with ten equivalent ClBa4 tetrahedra, an edgeedge with one ClBa4 tetrahedra, and edges with two equivalent NBa3N tetrahedra. The N–N bond length is 1.19 Å. In the second N+0.33- site, N+0.33- is bonded in a distorted trigonal planar geometry to two equivalent Ba2+ and one N+0.33- atom. The N–N bond length is 1.18 Å. In the third N+0.33- site, N+0.33- is bonded in a linear geometry to two N+0.33- atoms. Cl1- is bonded to four equivalent Ba2+ atoms to form distorted ClBa4 tetrahedra that share corners with four equivalent ClBa4 tetrahedra, corners with ten equivalent NBa3N tetrahedra, an edgeedge with one NBa3N tetrahedra, and edges with four equivalent ClBa4 tetrahedra.

36 MATERIALS SCIENCE↗

Materials Data on Ba2NCl by Materials Project

Ba2NCl is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Ba2+ is bonded to three equivalent N3- and three equivalent Cl1- atoms to form a mixture of edge and corner-sharing BaN3Cl3 octahedra. The corner-sharing octahedral tilt angles are 0°. All Ba–N bond lengths are 2.83 Å. All Ba–Cl bond lengths are 3.36 Å. N3- is bonded to six equivalent Ba2+ atoms to form NBa6 octahedra that share corners with six equivalent ClBa6 octahedra, edges with six equivalent NBa6 octahedra, and edges with six equivalent ClBa6 octahedra. The corner-sharing octahedral tilt angles are 13°. Cl1- is bonded to six equivalent Ba2+ atoms to form distorted ClBa6 octahedra that share corners with six equivalent NBa6 octahedra, edges with six equivalent NBa6 octahedra, and edges with six equivalent ClBa6 octahedra. The corner-sharing octahedral tilt angles are 13°.

36 MATERIALS SCIENCE↗