Materials Data on Cu2SiHgTe4 by Materials Project
Cu2HgSiTe4 is Stannite structured and crystallizes in the tetragonal I-42m space group. The structure is three-dimensional. Cu1+ is bonded to four equivalent Te2- atoms to form CuTe4 tetrahedra that share corners with four equivalent CuTe4 tetrahedra, corners with four equivalent HgTe4 tetrahedra, and corners with four equivalent SiTe4 tetrahedra. All Cu–Te bond lengths are 2.59 Å. Hg2+ is bonded to four equivalent Te2- atoms to form HgTe4 tetrahedra that share corners with four equivalent SiTe4 tetrahedra and corners with eight equivalent CuTe4 tetrahedra. All Hg–Te bond lengths are 2.88 Å. Si4+ is bonded to four equivalent Te2- atoms to form SiTe4 tetrahedra that share corners with four equivalent HgTe4 tetrahedra and corners with eight equivalent CuTe4 tetrahedra. All Si–Te bond lengths are 2.58 Å. Te2- is bonded to two equivalent Cu1+, one Hg2+, and one Si4+ atom to form corner-sharing TeCu2SiHg tetrahedra.