SiAsBeAs is Chalcopyrite structured and crystallizes in the tetragonal I-42d space group. Be(1) is bonded to four equivalent As(1) atoms to form BeAs4 tetrahedra that share corners with four equivalent Be(1)As4 tetrahedra and corners with eight equivalent Si(1)As4 tetrahedra. Si(1) is bonded to four equivalent As(1) atoms to form SiAs4 tetrahedra that share corners with four equivalent Si(1)As4 tetrahedra and corners with eight equivalent Be(1)As4 tetrahedra. As(1) is bonded to two equivalent Be(1) and two equivalent Si(1) atoms to form corner-sharing AsBe2Si2 tetrahedra.
SiAsBeAs is Chalcopyrite structured and crystallizes in the tetragonal I-42d space group. Be(1) is bonded to four equivalent As(1) atoms to form BeAs4 tetrahedra that share corners with four equivalent Be(1)As4 tetrahedra and corners with eight equivalent Si(1)As4 tetrahedra. All Be(1)-As(1) bond lengths are 2.26 Å. Si(1) is bonded to four equivalent As(1) atoms to form SiAs4 tetrahedra that share corners with four equivalent Si(1)As4 tetrahedra and corners with eight equivalent Be(1)As4 tetrahedra. All Si(1)-As(1) bond lengths are 2.36 Å. As(1) is bonded to two equivalent Be(1) and two equivalent Si(1) atoms to form corner-sharing AsBe2Si2 tetrahedra.