Materials Data on LaCuTeS by Materials Project
LaCuTeS crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. La3+ is bonded in a 8-coordinate geometry to four equivalent Te2- and four equivalent S2- atoms. There are a spread of La–Te bond distances ranging from 3.27–3.63 Å. There are a spread of La–S bond distances ranging from 2.88–3.03 Å. Cu1+ is bonded to three equivalent Te2- and one S2- atom to form a mixture of distorted edge and corner-sharing CuTe3S tetrahedra. There are a spread of Cu–Te bond distances ranging from 2.65–2.73 Å. The Cu–S bond length is 2.31 Å. Te2- is bonded in a 5-coordinate geometry to four equivalent La3+ and three equivalent Cu1+ atoms. S2- is bonded to four equivalent La3+ and one Cu1+ atom to form a mixture of distorted edge and corner-sharing SLa4Cu trigonal bipyramids.