PtAs2 is Pyrite structured and crystallizes in the cubic Pa-3 space group. Pt(1) is bonded to six equivalent As(1) atoms to form PtAs6 octahedra that share corners with twelve equivalent Pt(1)As6 octahedra and corners with six equivalent As(1)AsPt3 tetrahedra. The corner-sharing octahedral tilt angles are 64°. As(1) is bonded to three equivalent Pt(1) and one As(1) atom to form AsAsPt3 tetrahedra that share corners with three equivalent Pt(1)As6 octahedra and corners with fifteen equivalent As(1)AsPt3 tetrahedra. The corner-sharing octahedral tilt angles are 78°.
PtAs2 is Pyrite structured and crystallizes in the cubic Pa-3 space group. Pt(1) is bonded to six equivalent As(1) atoms to form PtAs6 octahedra that share corners with twelve equivalent Pt(1)As6 octahedra and corners with six equivalent As(1)AsPt3 tetrahedra. The corner-sharing octahedral tilt angles are 64°. All Pt(1)-As(1) bond lengths are 2.51 Å. As(1) is bonded to three equivalent Pt(1) and one As(1) atom to form AsAsPt3 tetrahedra that share corners with three equivalent Pt(1)As6 octahedra and corners with fifteen equivalent As(1)AsPt3 tetrahedra. The corner-sharing octahedral tilt angles are 78°. The As(1)-As(1) bond length is 2.41 Å.