LaAgZnAs2 crystallizes in the trigonal P3m1 space group. La(1) is bonded to three equivalent Ag(1), three equivalent As(1), and three equivalent As(2) atoms to form distorted LaAg3As6 octahedra that share corners with three equivalent As(1)La3Zn3Ag pentagonal bipyramids, corners with three equivalent As(2)La3ZnAg3 pentagonal bipyramids, corners with six equivalent Ag(1)La3Zn3As4 tetrahedra, corners with six equivalent Zn(1)Ag3As4 tetrahedra, edges with three equivalent As(2)La3ZnAg3 pentagonal bipyramids, edges with three equivalent Ag(1)La3Zn3As4 tetrahedra, edges with three equivalent Zn(1)Ag3As4 tetrahedra, faces with six equivalent La(1)Ag3As6 octahedra, and faces with three equivalent Zn(1)Ag3As4 tetrahedra. Ag(1) is bonded to three equivalent La(1), three equivalent Zn(1), one As(1), and three equivalent As(2) atoms to form distorted AgLa3Zn3As4 tetrahedra that share corners with six equivalent La(1)Ag3As6 octahedra, corners with three equivalent As(2)La3ZnAg3 pentagonal bipyramids, corners with twelve equivalent As(1)La3Zn3Ag pentagonal bipyramids, edges with three equivalent La(1)Ag3As6 octahedra, edges with three equivalent Zn(1)Ag3As4 tetrahedra, faces with two equivalent As(1)La3Zn3Ag pentagonal bipyramids, faces with three equivalent As(2)La3ZnAg3 pentagonal bipyramids, and faces with six equivalent Ag(1)La3Zn3As4 tetrahedra. The corner-sharing octahedral tilt angles range from 16-54°. Zn(1) is bonded to three equivalent Ag(1), one As(2), and three equivalent As(1) atoms to form distorted ZnAg3As4 tetrahedra that share corners with six equivalent La(1)Ag3As6 octahedra, corners with three equivalent As(1)La3Zn3Ag pentagonal bipyramids, corners with six equivalent As(2)La3ZnAg3 pentagonal bipyramids, edges with three equivalent La(1)Ag3As6 octahedra, edges with three equivalent Ag(1)La3Zn3As4 tetrahedra, edges with six equivalent Zn(1)Ag3As4 tetrahedra, faces with three equivalent La(1)Ag3As6 octahedra, and  a faceface with one As(2)La3ZnAg3 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 8-17°. There are two inequivalent As sites. In the first As site, As(1) is bonded to three equivalent La(1), one Ag(1), and three equivalent Zn(1) atoms to form distorted AsLa3Zn3Ag pentagonal bipyramids that share corners with three equivalent La(1)Ag3As6 octahedra, corners with three equivalent As(2)La3ZnAg3 pentagonal bipyramids, corners with three equivalent Zn(1)Ag3As4 tetrahedra, corners with twelve equivalent Ag(1)La3Zn3As4 tetrahedra, edges with six equivalent As(1)La3Zn3Ag pentagonal bipyramids, edges with six equivalent As(2)La3ZnAg3 pentagonal bipyramids, and faces with two equivalent Ag(1)La3Zn3As4 tetrahedra. The corner-sharing octahedral tilt angles are 46°. In the second As site, As(2) is bonded to three equivalent La(1), three equivalent Ag(1), and one Zn(1) atom to form distorted AsLa3ZnAg3 pentagonal bipyramids that share corners with three equivalent La(1)Ag3As6 octahedra, corners with three equivalent As(1)La3Zn3Ag pentagonal bipyramids, corners with three equivalent Ag(1)La3Zn3As4 tetrahedra, corners with six equivalent Zn(1)Ag3As4 tetrahedra, edges with three equivalent La(1)Ag3As6 octahedra, edges with six equivalent As(1)La3Zn3Ag pentagonal bipyramids, edges with six equivalent As(2)La3ZnAg3 pentagonal bipyramids,  a faceface with one Zn(1)Ag3As4 tetrahedra, and faces with three equivalent Ag(1)La3Zn3As4 tetrahedra. The corner-sharing octahedral tilt angles are 61°.
LaAgZnAs2 crystallizes in the trigonal P3m1 space group. La(1) is bonded to three equivalent Ag(1), three equivalent As(1), and three equivalent As(2) atoms to form distorted LaAg3As6 octahedra that share corners with three equivalent As(1)La3Zn3Ag pentagonal bipyramids, corners with three equivalent As(2)La3ZnAg3 pentagonal bipyramids, corners with six equivalent Ag(1)La3Zn3As4 tetrahedra, corners with six equivalent Zn(1)Ag3As4 tetrahedra, edges with three equivalent As(2)La3ZnAg3 pentagonal bipyramids, edges with three equivalent Ag(1)La3Zn3As4 tetrahedra, edges with three equivalent Zn(1)Ag3As4 tetrahedra, faces with six equivalent La(1)Ag3As6 octahedra, and faces with three equivalent Zn(1)Ag3As4 tetrahedra. All La(1)-Ag(1) bond lengths are 3.52 Å. All La(1)-As(1) bond lengths are 3.13 Å. All La(1)-As(2) bond lengths are 3.02 Å. Ag(1) is bonded to three equivalent La(1), three equivalent Zn(1), one As(1), and three equivalent As(2) atoms to form distorted AgLa3Zn3As4 tetrahedra that share corners with six equivalent La(1)Ag3As6 octahedra, corners with three equivalent As(2)La3ZnAg3 pentagonal bipyramids, corners with twelve equivalent As(1)La3Zn3Ag pentagonal bipyramids, edges with three equivalent La(1)Ag3As6 octahedra, edges with three equivalent Zn(1)Ag3As4 tetrahedra, faces with two equivalent As(1)La3Zn3Ag pentagonal bipyramids, faces with three equivalent As(2)La3ZnAg3 pentagonal bipyramids, and faces with six equivalent Ag(1)La3Zn3As4 tetrahedra. The corner-sharing octahedral tilt angles range from 16-54°. All Ag(1)-Zn(1) bond lengths are 3.13 Å. The Ag(1)-As(1) bond length is 2.73 Å. All Ag(1)-As(2) bond lengths are 2.65 Å. Zn(1) is bonded to three equivalent Ag(1), one As(2), and three equivalent As(1) atoms to form distorted ZnAg3As4 tetrahedra that share corners with six equivalent La(1)Ag3As6 octahedra, corners with three equivalent As(1)La3Zn3Ag pentagonal bipyramids, corners with six equivalent As(2)La3ZnAg3 pentagonal bipyramids, edges with three equivalent La(1)Ag3As6 octahedra, edges with three equivalent Ag(1)La3Zn3As4 tetrahedra, edges with six equivalent Zn(1)Ag3As4 tetrahedra, faces with three equivalent La(1)Ag3As6 octahedra, and  a faceface with one As(2)La3ZnAg3 pentagonal bipyramid. The corner-sharing octahedral tilt angles range from 8-17°. The Zn(1)-As(2) bond length is 2.64 Å. All Zn(1)-As(1) bond lengths are 2.68 Å. There are two inequivalent As sites. In the first As site, As(1) is bonded to three equivalent La(1), one Ag(1), and three equivalent Zn(1) atoms to form distorted AsLa3Zn3Ag pentagonal bipyramids that share corners with three equivalent La(1)Ag3As6 octahedra, corners with three equivalent As(2)La3ZnAg3 pentagonal bipyramids, corners with three equivalent Zn(1)Ag3As4 tetrahedra, corners with twelve equivalent Ag(1)La3Zn3As4 tetrahedra, edges with six equivalent As(1)La3Zn3Ag pentagonal bipyramids, edges with six equivalent As(2)La3ZnAg3 pentagonal bipyramids, and faces with two equivalent Ag(1)La3Zn3As4 tetrahedra. The corner-sharing octahedral tilt angles are 46°. In the second As site, As(2) is bonded to three equivalent La(1), three equivalent Ag(1), and one Zn(1) atom to form distorted AsLa3ZnAg3 pentagonal bipyramids that share corners with three equivalent La(1)Ag3As6 octahedra, corners with three equivalent As(1)La3Zn3Ag pentagonal bipyramids, corners with three equivalent Ag(1)La3Zn3As4 tetrahedra, corners with six equivalent Zn(1)Ag3As4 tetrahedra, edges with three equivalent La(1)Ag3As6 octahedra, edges with six equivalent As(1)La3Zn3Ag pentagonal bipyramids, edges with six equivalent As(2)La3ZnAg3 pentagonal bipyramids,  a faceface with one Zn(1)Ag3As4 tetrahedra, and faces with three equivalent Ag(1)La3Zn3As4 tetrahedra. The corner-sharing octahedral tilt angles are 61°.