MnSiAs2 is Chalcopyrite structured and crystallizes in the tetragonal I-42d space group. Mn(1) is bonded to four equivalent As(1) atoms to form MnAs4 tetrahedra that share corners with four equivalent Mn(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 Mn(1)As4 tetrahedra. As(1) is bonded to two equivalent Mn(1) and two equivalent Si(1) atoms to form corner-sharing AsMn2Si2 tetrahedra.
MnSiAs2 is Chalcopyrite structured and crystallizes in the tetragonal I-42d space group. Mn(1) is bonded to four equivalent As(1) atoms to form MnAs4 tetrahedra that share corners with four equivalent Mn(1)As4 tetrahedra and corners with eight equivalent Si(1)As4 tetrahedra. All Mn(1)-As(1) bond lengths are 2.55 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 Mn(1)As4 tetrahedra. All Si(1)-As(1) bond lengths are 2.40 Å. As(1) is bonded to two equivalent Mn(1) and two equivalent Si(1) atoms to form corner-sharing AsMn2Si2 tetrahedra.