YbMn2As2 crystallizes in the trigonal P-3m1 space group. Yb(1) is bonded to six equivalent As(1) atoms to form YbAs6 octahedra that share corners with twelve equivalent Mn(1)As4 tetrahedra, edges with six equivalent Yb(1)As6 octahedra, and edges with six equivalent Mn(1)As4 tetrahedra. Mn(1) is bonded to four equivalent As(1) atoms to form MnAs4 tetrahedra that share corners with six equivalent Yb(1)As6 octahedra, corners with six equivalent Mn(1)As4 tetrahedra, edges with three equivalent Yb(1)As6 octahedra, and edges with three equivalent Mn(1)As4 tetrahedra. The corner-sharing octahedral tilt angles range from 20-51°. As(1) is bonded to three equivalent Yb(1) and four equivalent Mn(1) atoms to form a mixture of distorted corner and edge-sharing AsYb3Mn4 pentagonal bipyramids.
YbMn2As2 crystallizes in the trigonal P-3m1 space group. Yb(1) is bonded to six equivalent As(1) atoms to form YbAs6 octahedra that share corners with twelve equivalent Mn(1)As4 tetrahedra, edges with six equivalent Yb(1)As6 octahedra, and edges with six equivalent Mn(1)As4 tetrahedra. All Yb(1)-As(1) bond lengths are 2.96 Å. Mn(1) is bonded to four equivalent As(1) atoms to form MnAs4 tetrahedra that share corners with six equivalent Yb(1)As6 octahedra, corners with six equivalent Mn(1)As4 tetrahedra, edges with three equivalent Yb(1)As6 octahedra, and edges with three equivalent Mn(1)As4 tetrahedra. The corner-sharing octahedral tilt angles range from 20-51°. There is one shorter (2.41 Å) and three longer (2.44 Å) Mn(1)-As(1) bond lengths. As(1) is bonded to three equivalent Yb(1) and four equivalent Mn(1) atoms to form a mixture of distorted corner and edge-sharing AsYb3Mn4 pentagonal bipyramids.