Materials Data on Na2BrCl by Materials Project
Na2BrCl is Caswellsilverite structured and crystallizes in the trigonal R-3m space group. The structure is three-dimensional. Na1+ is bonded to three equivalent Br1- and three equivalent Cl1- atoms to form a mixture of edge and corner-sharing NaBr3Cl3 octahedra. The corner-sharing octahedral tilt angles are 0°. All Na–Br bond lengths are 2.98 Å. All Na–Cl bond lengths are 2.89 Å. Br1- is bonded to six equivalent Na1+ atoms to form BrNa6 octahedra that share corners with six equivalent ClNa6 octahedra, edges with six equivalent BrNa6 octahedra, and edges with six equivalent ClNa6 octahedra. The corner-sharing octahedral tilt angles are 2°. Cl1- is bonded to six equivalent Na1+ atoms to form ClNa6 octahedra that share corners with six equivalent BrNa6 octahedra, edges with six equivalent BrNa6 octahedra, and edges with six equivalent ClNa6 octahedra. The corner-sharing octahedral tilt angles are 2°.