YbNiGe2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 14-coordinate geometry to two equivalent Ni(1), two equivalent Ni(2), one Ge(1), one Ge(2), four equivalent Ge(3), and four equivalent Ge(4) atoms. In the second Yb site, Yb(2) is bonded in a 15-coordinate geometry to three equivalent Ni(1), three equivalent Ni(2), one Ge(3), two equivalent Ge(4), three equivalent Ge(1), and three equivalent Ge(2) atoms. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 10-coordinate geometry to two equivalent Yb(1), three equivalent Yb(2), one Ge(3), one Ge(4), and three equivalent Ge(2) atoms. In the second Ni site, Ni(2) is bonded in a 10-coordinate geometry to two equivalent Yb(1), three equivalent Yb(2), one Ge(3), one Ge(4), and three equivalent Ge(1) atoms. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to one Yb(1), three equivalent Yb(2), three equivalent Ni(2), and one Ge(2) atom. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to one Yb(1), three equivalent Yb(2), three equivalent Ni(1), and one Ge(1) atom. In the third Ge site, Ge(3) is bonded in a 2-coordinate geometry to one Yb(2), four equivalent Yb(1), one Ni(1), and one Ni(2) atom. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to two equivalent Yb(2), four equivalent Yb(1), one Ni(1), one Ni(2), and one Ge(4) atom.
YbNiGe2 crystallizes in the monoclinic C2/m space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 14-coordinate geometry to two equivalent Ni(1), two equivalent Ni(2), one Ge(1), one Ge(2), four equivalent Ge(3), and four equivalent Ge(4) atoms. Both Yb(1)-Ni(1) bond lengths are 3.11 Å. Both Yb(1)-Ni(2) bond lengths are 3.10 Å. The Yb(1)-Ge(1) bond length is 3.12 Å. The Yb(1)-Ge(2) bond length is 3.13 Å. All Yb(1)-Ge(3) bond lengths are 3.29 Å. All Yb(1)-Ge(4) bond lengths are 3.17 Å. In the second Yb site, Yb(2) is bonded in a 15-coordinate geometry to three equivalent Ni(1), three equivalent Ni(2), one Ge(3), two equivalent Ge(4), three equivalent Ge(1), and three equivalent Ge(2) atoms. All Yb(2)-Ni(1) bond lengths are 3.09 Å. All Yb(2)-Ni(2) bond lengths are 3.10 Å. The Yb(2)-Ge(3) bond length is 3.24 Å. Both Yb(2)-Ge(4) bond lengths are 2.88 Å. There are two shorter (2.91 Å) and one longer (2.93 Å) Yb(2)-Ge(1) bond length. There are two shorter (2.90 Å) and one longer (2.92 Å) Yb(2)-Ge(2) bond length. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded in a 10-coordinate geometry to two equivalent Yb(1), three equivalent Yb(2), one Ge(3), one Ge(4), and three equivalent Ge(2) atoms. The Ni(1)-Ge(3) bond length is 2.36 Å. The Ni(1)-Ge(4) bond length is 2.37 Å. There are two shorter (2.35 Å) and one longer (2.53 Å) Ni(1)-Ge(2) bond length. In the second Ni site, Ni(2) is bonded in a 10-coordinate geometry to two equivalent Yb(1), three equivalent Yb(2), one Ge(3), one Ge(4), and three equivalent Ge(1) atoms. The Ni(2)-Ge(3) bond length is 2.37 Å. The Ni(2)-Ge(4) bond length is 2.36 Å. There are two shorter (2.35 Å) and one longer (2.53 Å) Ni(2)-Ge(1) bond length. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a 8-coordinate geometry to one Yb(1), three equivalent Yb(2), three equivalent Ni(2), and one Ge(2) atom. The Ge(1)-Ge(2) bond length is 2.65 Å. In the second Ge site, Ge(2) is bonded in a 8-coordinate geometry to one Yb(1), three equivalent Yb(2), three equivalent Ni(1), and one Ge(1) atom. In the third Ge site, Ge(3) is bonded in a 2-coordinate geometry to one Yb(2), four equivalent Yb(1), one Ni(1), and one Ni(2) atom. In the fourth Ge site, Ge(4) is bonded in a 9-coordinate geometry to two equivalent Yb(2), four equivalent Yb(1), one Ni(1), one Ni(2), and one Ge(4) atom. The Ge(4)-Ge(4) bond length is 2.41 Å.