Materials Data on Si3Os by Materials Project
OsSi3 is alpha bismuth trifluoride structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are two inequivalent Os4+ sites. In the first Os4+ site, Os4+ is bonded in a distorted body-centered cubic geometry to fourteen Si+1.33- atoms. There are a spread of Os–Si bond distances ranging from 2.61–3.14 Å. In the second Os4+ site, Os4+ is bonded in a distorted body-centered cubic geometry to fourteen Si+1.33- atoms. There are a spread of Os–Si bond distances ranging from 2.61–3.14 Å. There are three inequivalent Si+1.33- sites. In the first Si+1.33- site, Si+1.33- is bonded in a distorted body-centered cubic geometry to four Os4+ and four Si+1.33- atoms. All Si–Si bond lengths are 2.61 Å. In the second Si+1.33- site, Si+1.33- is bonded to six Os4+ and eight equivalent Si+1.33- atoms to form a mixture of distorted corner and face-sharing SiSi8Os6 cuboctahedra. In the third Si+1.33- site, Si+1.33- is bonded to six Os4+ and eight equivalent Si+1.33- atoms to form a mixture of distorted corner and face-sharing SiSi8Os6 cuboctahedra.