Materials Data on Rb4Tc6S13 by Materials Project
Rb4Tc6S13 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. there are two inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Rb–S bond distances ranging from 3.23–3.86 Å. In the second Rb1+ site, Rb1+ is bonded in a 6-coordinate geometry to eight S2- atoms. There are a spread of Rb–S bond distances ranging from 3.25–4.05 Å. There are three inequivalent Tc+3.67+ sites. In the first Tc+3.67+ site, Tc+3.67+ is bonded to five S2- atoms to form edge-sharing TcS5 square pyramids. There are a spread of Tc–S bond distances ranging from 2.39–2.52 Å. In the second Tc+3.67+ site, Tc+3.67+ is bonded to five S2- atoms to form a mixture of corner and edge-sharing TcS5 square pyramids. There are a spread of Tc–S bond distances ranging from 2.40–2.50 Å. In the third Tc+3.67+ site, Tc+3.67+ is bonded to five S2- atoms to form TcS5 square pyramids that share a cornercorner with one SRb2TcS tetrahedra and edges with four TcS5 square pyramids. There are a spread of Tc–S bond distances ranging from 2.39–2.46 Å. There are seven inequivalent S2- sites. In the first S2- site, S2- is bonded in a 2-coordinate geometry to four Rb1+ and two equivalent Tc+3.67+ atoms. In the second S2- site, S2- is bonded to two Rb1+, one Tc+3.67+, and one S2- atom to form distorted SRb2TcS tetrahedra that share a cornercorner with one TcS5 square pyramid. The S–S bond length is 2.10 Å. In the third S2- site, S2- is bonded in a 5-coordinate geometry to three Rb1+, one Tc+3.67+, and one S2- atom. The S–S bond length is 2.12 Å. In the fourth S2- site, S2- is bonded in a 4-coordinate geometry to one Rb1+ and three Tc+3.67+ atoms. In the fifth S2- site, S2- is bonded in a 5-coordinate geometry to three Rb1+ and three Tc+3.67+ atoms. In the sixth S2- site, S2- is bonded in a 5-coordinate geometry to two Rb1+ and three Tc+3.67+ atoms. In the seventh S2- site, S2- is bonded in a 5-coordinate geometry to three Rb1+ and three Tc+3.67+ atoms.