FeNbGe crystallizes in the orthorhombic Ima2 space group. There are three inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 11-coordinate geometry to two equivalent Fe(2), four equivalent Fe(1), one Ge(2), and four equivalent Ge(1) atoms. In the second Nb site, Nb(2) is bonded in a 5-coordinate geometry to two equivalent Fe(1), two equivalent Fe(2), one Ge(2), and four equivalent Ge(1) atoms. In the third Nb site, Nb(3) is bonded in a 9-coordinate geometry to two equivalent Fe(1), two equivalent Fe(2), one Ge(2), and four equivalent Ge(1) atoms. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 8-coordinate geometry to one Nb(2), one Nb(3), two equivalent Nb(1), one Fe(2), two equivalent Ge(1), and two equivalent Ge(2) atoms. In the second Fe site, Fe(2) is bonded in a 12-coordinate geometry to two equivalent Nb(1), two equivalent Nb(2), two equivalent Nb(3), two equivalent Fe(1), two equivalent Ge(1), and two equivalent Ge(2) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Nb(1), two equivalent Nb(2), two equivalent Nb(3), one Fe(2), and two equivalent Fe(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Nb(1), one Nb(2), one Nb(3), two equivalent Fe(2), and four equivalent Fe(1) atoms.
FeNbGe crystallizes in the orthorhombic Ima2 space group. There are three inequivalent Nb sites. In the first Nb site, Nb(1) is bonded in a 11-coordinate geometry to two equivalent Fe(2), four equivalent Fe(1), one Ge(2), and four equivalent Ge(1) atoms. Both Nb(1)-Fe(2) bond lengths are 2.84 Å. There are two shorter (2.73 Å) and two longer (2.78 Å) Nb(1)-Fe(1) bond lengths. The Nb(1)-Ge(2) bond length is 2.85 Å. There are two shorter (2.66 Å) and two longer (2.68 Å) Nb(1)-Ge(1) bond lengths. In the second Nb site, Nb(2) is bonded in a 5-coordinate geometry to two equivalent Fe(1), two equivalent Fe(2), one Ge(2), and four equivalent Ge(1) atoms. Both Nb(2)-Fe(1) bond lengths are 2.89 Å. Both Nb(2)-Fe(2) bond lengths are 3.03 Å. The Nb(2)-Ge(2) bond length is 2.61 Å. All Nb(2)-Ge(1) bond lengths are 2.65 Å. In the third Nb site, Nb(3) is bonded in a 9-coordinate geometry to two equivalent Fe(1), two equivalent Fe(2), one Ge(2), and four equivalent Ge(1) atoms. Both Nb(3)-Fe(1) bond lengths are 2.79 Å. Both Nb(3)-Fe(2) bond lengths are 2.86 Å. The Nb(3)-Ge(2) bond length is 2.67 Å. There are two shorter (2.63 Å) and two longer (2.67 Å) Nb(3)-Ge(1) bond lengths. There are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in a 8-coordinate geometry to one Nb(2), one Nb(3), two equivalent Nb(1), one Fe(2), two equivalent Ge(1), and two equivalent Ge(2) atoms. The Fe(1)-Fe(2) bond length is 2.84 Å. Both Fe(1)-Ge(1) bond lengths are 2.50 Å. There is one shorter (2.42 Å) and one longer (2.45 Å) Fe(1)-Ge(2) bond length. In the second Fe site, Fe(2) is bonded in a 12-coordinate geometry to two equivalent Nb(1), two equivalent Nb(2), two equivalent Nb(3), two equivalent Fe(1), two equivalent Ge(1), and two equivalent Ge(2) atoms. Both Fe(2)-Ge(1) bond lengths are 2.52 Å. Both Fe(2)-Ge(2) bond lengths are 2.46 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 9-coordinate geometry to two equivalent Nb(1), two equivalent Nb(2), two equivalent Nb(3), one Fe(2), and two equivalent Fe(1) atoms. In the second Ge site, Ge(2) is bonded in a 9-coordinate geometry to one Nb(1), one Nb(2), one Nb(3), two equivalent Fe(2), and four equivalent Fe(1) atoms.