Cd2SnGeAs4 is Stannite-like structured and crystallizes in the tetragonal I-4 space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to four equivalent As(1) atoms to form CdAs4 tetrahedra that share corners with four equivalent Cd(2)As4 tetrahedra, corners with four equivalent Sn(1)As4 tetrahedra, and corners with four equivalent Ge(1)As4 tetrahedra. In the second Cd site, Cd(2) is bonded to four equivalent As(1) atoms to form CdAs4 tetrahedra that share corners with four equivalent Cd(1)As4 tetrahedra, corners with four equivalent Sn(1)As4 tetrahedra, and corners with four equivalent Ge(1)As4 tetrahedra. Sn(1) is bonded to four equivalent As(1) atoms to form SnAs4 tetrahedra that share corners with four equivalent Cd(1)As4 tetrahedra, corners with four equivalent Cd(2)As4 tetrahedra, and corners with four equivalent Ge(1)As4 tetrahedra. Ge(1) is bonded to four equivalent As(1) atoms to form GeAs4 tetrahedra that share corners with four equivalent Cd(1)As4 tetrahedra, corners with four equivalent Cd(2)As4 tetrahedra, and corners with four equivalent Sn(1)As4 tetrahedra. As(1) is bonded to one Cd(1), one Cd(2), one Sn(1), and one Ge(1) atom to form corner-sharing AsCd2SnGe tetrahedra.
Cd2SnGeAs4 is Stannite-like structured and crystallizes in the tetragonal I-4 space group. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded to four equivalent As(1) atoms to form CdAs4 tetrahedra that share corners with four equivalent Cd(2)As4 tetrahedra, corners with four equivalent Sn(1)As4 tetrahedra, and corners with four equivalent Ge(1)As4 tetrahedra. All Cd(1)-As(1) bond lengths are 2.70 Å. In the second Cd site, Cd(2) is bonded to four equivalent As(1) atoms to form CdAs4 tetrahedra that share corners with four equivalent Cd(1)As4 tetrahedra, corners with four equivalent Sn(1)As4 tetrahedra, and corners with four equivalent Ge(1)As4 tetrahedra. All Cd(2)-As(1) bond lengths are 2.68 Å. Sn(1) is bonded to four equivalent As(1) atoms to form SnAs4 tetrahedra that share corners with four equivalent Cd(1)As4 tetrahedra, corners with four equivalent Cd(2)As4 tetrahedra, and corners with four equivalent Ge(1)As4 tetrahedra. All Sn(1)-As(1) bond lengths are 2.66 Å. Ge(1) is bonded to four equivalent As(1) atoms to form GeAs4 tetrahedra that share corners with four equivalent Cd(1)As4 tetrahedra, corners with four equivalent Cd(2)As4 tetrahedra, and corners with four equivalent Sn(1)As4 tetrahedra. All Ge(1)-As(1) bond lengths are 2.49 Å. As(1) is bonded to one Cd(1), one Cd(2), one Sn(1), and one Ge(1) atom to form corner-sharing AsCd2SnGe tetrahedra.