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ReTeS crystallizes in the cubic F-43m space group. The structure is three-dimensional. Re4+ is bonded in a 6-coordinate geometry to three equivalent Te2- and three equivalent S2- atoms. All Re–Te bond lengths are 2.83 Å. All Re–S bond lengths are 2.35 Å. Te2- is bonded in a distorted trigonal non-coplanar geometry to three equivalent Re4+ atoms. S2- is bonded in a 12-coordinate geometry to three equivalent Re4+ atoms.
ReTe crystallizes in the hexagonal P6_3mc space group. The structure is three-dimensional. Re is bonded in a 4-coordinate geometry to four equivalent Te atoms. There are three shorter (2.61 Å) and one longer (2.65 Å) Re–Te bond lengths. Te is bonded in a 4-coordinate geometry to four equivalent Re atoms.