Nb(FeGe)6 crystallizes in the hexagonal P6/mmm space group. Nb(1) is bonded to two equivalent Ge(1) and six equivalent Ge(3) atoms to form distorted edge-sharing NbGe8 hexagonal bipyramids. Fe(1) is bonded in a 10-coordinate geometry to four equivalent Fe(1), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to one Nb(1), six equivalent Fe(1), and one Ge(1) atom. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to six equivalent Fe(1) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to three equivalent Nb(1) and six equivalent Fe(1) atoms.
Nb(FeGe)6 crystallizes in the hexagonal P6/mmm space group. Nb(1) is bonded to two equivalent Ge(1) and six equivalent Ge(3) atoms to form distorted edge-sharing NbGe8 hexagonal bipyramids. Both Nb(1)-Ge(1) bond lengths are 2.75 Å. All Nb(1)-Ge(3) bond lengths are 2.90 Å. Fe(1) is bonded in a 10-coordinate geometry to four equivalent Fe(1), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. All Fe(1)-Fe(1) bond lengths are 2.51 Å. Both Fe(1)-Ge(1) bond lengths are 2.61 Å. Both Fe(1)-Ge(2) bond lengths are 2.50 Å. Both Fe(1)-Ge(3) bond lengths are 2.49 Å. There are three inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to one Nb(1), six equivalent Fe(1), and one Ge(1) atom. The Ge(1)-Ge(1) bond length is 2.65 Å. In the second Ge site, Ge(2) is bonded in a 6-coordinate geometry to six equivalent Fe(1) atoms. In the third Ge site, Ge(3) is bonded in a 9-coordinate geometry to three equivalent Nb(1) and six equivalent Fe(1) atoms.