K2NaCl3 is Caswellsilverite-like structured and crystallizes in the trigonal P-3m1 space group. K(1) is bonded to three equivalent Cl(1) and three equivalent Cl(2) atoms to form KCl6 octahedra that share corners with three equivalent K(1)Cl6 octahedra, corners with three equivalent Na(1)Cl6 octahedra, edges with three equivalent Na(1)Cl6 octahedra, and edges with nine equivalent K(1)Cl6 octahedra. The corner-sharing octahedral tilt angles range from 0-6°. Na(1) is bonded to six equivalent Cl(1) atoms to form NaCl6 octahedra that share corners with six equivalent K(1)Cl6 octahedra, edges with six equivalent K(1)Cl6 octahedra, and edges with six equivalent Na(1)Cl6 octahedra. The corner-sharing octahedral tilt angles are 6°. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to three equivalent K(1) and three equivalent Na(1) atoms to form ClK3Na3 octahedra that share corners with three equivalent Cl(1)K3Na3 octahedra, corners with three equivalent Cl(2)K6 octahedra, edges with three equivalent Cl(2)K6 octahedra, and edges with nine equivalent Cl(1)K3Na3 octahedra. The corner-sharing octahedra are not tilted. In the second Cl site, Cl(2) is bonded to six equivalent K(1) atoms to form ClK6 octahedra that share corners with six equivalent Cl(1)K3Na3 octahedra, edges with six equivalent Cl(1)K3Na3 octahedra, and edges with six equivalent Cl(2)K6 octahedra. The corner-sharing octahedra are not tilted.
K2NaCl3 is Caswellsilverite-like structured and crystallizes in the trigonal P-3m1 space group. K(1) is bonded to three equivalent Cl(1) and three equivalent Cl(2) atoms to form KCl6 octahedra that share corners with three equivalent K(1)Cl6 octahedra, corners with three equivalent Na(1)Cl6 octahedra, edges with three equivalent Na(1)Cl6 octahedra, and edges with nine equivalent K(1)Cl6 octahedra. The corner-sharing octahedral tilt angles range from 0-6°. All K(1)-Cl(1) bond lengths are 3.10 Å. All K(1)-Cl(2) bond lengths are 3.11 Å. Na(1) is bonded to six equivalent Cl(1) atoms to form NaCl6 octahedra that share corners with six equivalent K(1)Cl6 octahedra, edges with six equivalent K(1)Cl6 octahedra, and edges with six equivalent Na(1)Cl6 octahedra. The corner-sharing octahedral tilt angles are 6°. All Na(1)-Cl(1) bond lengths are 2.89 Å. There are two inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to three equivalent K(1) and three equivalent Na(1) atoms to form ClK3Na3 octahedra that share corners with three equivalent Cl(1)K3Na3 octahedra, corners with three equivalent Cl(2)K6 octahedra, edges with three equivalent Cl(2)K6 octahedra, and edges with nine equivalent Cl(1)K3Na3 octahedra. The corner-sharing octahedra are not tilted. In the second Cl site, Cl(2) is bonded to six equivalent K(1) atoms to form ClK6 octahedra that share corners with six equivalent Cl(1)K3Na3 octahedra, edges with six equivalent Cl(1)K3Na3 octahedra, and edges with six equivalent Cl(2)K6 octahedra. The corner-sharing octahedra are not tilted.