Materials Data on Cu7S4N by Materials Project
Cu7NS4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are seven inequivalent Cu+1.57+ sites. In the first Cu+1.57+ site, Cu+1.57+ is bonded in a trigonal planar geometry to three S2- atoms. There are a spread of Cu–S bond distances ranging from 2.27–2.32 Å. In the second Cu+1.57+ site, Cu+1.57+ is bonded in a trigonal planar geometry to three S2- atoms. There are one shorter (2.31 Å) and two longer (2.32 Å) Cu–S bond lengths. In the third Cu+1.57+ site, Cu+1.57+ is bonded in a trigonal planar geometry to three S2- atoms. There are a spread of Cu–S bond distances ranging from 2.28–2.34 Å. In the fourth Cu+1.57+ site, Cu+1.57+ is bonded in a 3-coordinate geometry to three S2- atoms. There are a spread of Cu–S bond distances ranging from 2.28–2.53 Å. In the fifth Cu+1.57+ site, Cu+1.57+ is bonded in a 3-coordinate geometry to four S2- atoms. There are a spread of Cu–S bond distances ranging from 2.21–2.87 Å. In the sixth Cu+1.57+ site, Cu+1.57+ is bonded in a 3-coordinate geometry to four S2- atoms. There are a spread of Cu–S bond distances ranging from 2.22–2.87 Å. In the seventh Cu+1.57+ site, Cu+1.57+ is bonded in a 2-coordinate geometry to three S2- atoms. There are a spread of Cu–S bond distances ranging from 2.25–2.57 Å. N3- is bonded in a body-centered cubic geometry to eight S2- atoms. There are a spread of N–S bond distances ranging from 3.24–3.55 Å. There are four inequivalent S2- sites. In the first S2- site, S2- is bonded in a 6-coordinate geometry to six Cu+1.57+ and two equivalent N3- atoms. In the second S2- site, S2- is bonded in a 5-coordinate geometry to five Cu+1.57+ and two equivalent N3- atoms. In the third S2- site, S2- is bonded in a 4-coordinate geometry to five Cu+1.57+ and two equivalent N3- atoms. In the fourth S2- site, S2- is bonded in a 5-coordinate geometry to seven Cu+1.57+ and two equivalent N3- atoms.