Fe3Ge is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 14-coordinate geometry to eight equivalent Fe(2) and six equivalent Ge(1) atoms. In the second Fe site, Fe(2) is bonded in a distorted body-centered cubic geometry to four equivalent Fe(1) and four equivalent Ge(1) atoms. Ge(1) is bonded in a distorted body-centered cubic geometry to six equivalent Fe(1) and eight equivalent Fe(2) atoms.
Fe3Ge is alpha bismuth trifluoride structured and crystallizes in the cubic Fm-3m space group. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 14-coordinate geometry to eight equivalent Fe(2) and six equivalent Ge(1) atoms. All Fe(1)-Fe(2) bond lengths are 2.49 Å. All Fe(1)-Ge(1) bond lengths are 2.88 Å. In the second Fe site, Fe(2) is bonded in a distorted body-centered cubic geometry to four equivalent Fe(1) and four equivalent Ge(1) atoms. All Fe(2)-Ge(1) bond lengths are 2.49 Å. Ge(1) is bonded in a distorted body-centered cubic geometry to six equivalent Fe(1) and eight equivalent Fe(2) atoms.