ZrCrGe2 crystallizes in the orthorhombic Pbam space group. There are two inequivalent Zr sites. In the first Zr site, Zr(1) is bonded in a 8-coordinate geometry to one Ge(4), one Ge(5), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. In the second Zr site, Zr(2) is bonded to two equivalent Ge(1), two equivalent Ge(2), and three equivalent Ge(4) atoms to form distorted ZrGe7 pentagonal bipyramids that share corners with two equivalent Cr(2)Ge6 cuboctahedra, corners with two equivalent Zr(2)Ge7 pentagonal bipyramids, edges with three equivalent Zr(2)Ge7 pentagonal bipyramids, and faces with two equivalent Cr(2)Ge6 cuboctahedra. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 6-coordinate geometry to one Ge(2), one Ge(3), one Ge(4), one Ge(5), and two equivalent Ge(1) atoms. In the second Cr site, Cr(2) is bonded to two equivalent Ge(1), two equivalent Ge(4), and two equivalent Ge(5) atoms to form distorted CrGe6 cuboctahedra that share corners with two equivalent Zr(2)Ge7 pentagonal bipyramids, edges with two equivalent Cr(2)Ge6 cuboctahedra, and faces with two equivalent Zr(2)Ge7 pentagonal bipyramids. There are five inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Zr(2), four equivalent Zr(1), two equivalent Cr(1), and one Ge(2) atom. In the second Ge site, Ge(3) is bonded in a 7-coordinate geometry to four equivalent Zr(1), two equivalent Cr(1), and one Ge(3) atom. In the third Ge site, Ge(4) is bonded in a 9-coordinate geometry to two equivalent Zr(1), three equivalent Zr(2), two equivalent Cr(1), and two equivalent Cr(2) atoms. In the fourth Ge site, Ge(5) is bonded in a 6-coordinate geometry to two equivalent Zr(1), two equivalent Cr(1), and two equivalent Cr(2) atoms. In the fifth Ge site, Ge(1) is bonded in a 7-coordinate geometry to one Zr(2), two equivalent Zr(1), one Cr(2), two equivalent Cr(1), and one Ge(1) atom.
ZrCrGe2 crystallizes in the orthorhombic Pbam space group. There are two inequivalent Zr sites. In the first Zr site, Zr(1) is bonded in a 8-coordinate geometry to one Ge(4), one Ge(5), two equivalent Ge(1), two equivalent Ge(2), and two equivalent Ge(3) atoms. The Zr(1)-Ge(4) bond length is 2.79 Å. The Zr(1)-Ge(5) bond length is 2.87 Å. There is one shorter (2.85 Å) and one longer (2.88 Å) Zr(1)-Ge(1) bond length. There is one shorter (2.91 Å) and one longer (2.93 Å) Zr(1)-Ge(2) bond length. There is one shorter (2.96 Å) and one longer (3.01 Å) Zr(1)-Ge(3) bond length. In the second Zr site, Zr(2) is bonded to two equivalent Ge(1), two equivalent Ge(2), and three equivalent Ge(4) atoms to form distorted ZrGe7 pentagonal bipyramids that share corners with two equivalent Cr(2)Ge6 cuboctahedra, corners with two equivalent Zr(2)Ge7 pentagonal bipyramids, edges with three equivalent Zr(2)Ge7 pentagonal bipyramids, and faces with two equivalent Cr(2)Ge6 cuboctahedra. Both Zr(2)-Ge(1) bond lengths are 2.81 Å. There is one shorter (2.79 Å) and one longer (2.80 Å) Zr(2)-Ge(2) bond length. There are a spread of Zr(2)-Ge(4) bond distances ranging from 2.86-2.91 Å. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 6-coordinate geometry to one Ge(2), one Ge(3), one Ge(4), one Ge(5), and two equivalent Ge(1) atoms. The Cr(1)-Ge(2) bond length is 2.48 Å. The Cr(1)-Ge(3) bond length is 2.47 Å. The Cr(1)-Ge(4) bond length is 2.55 Å. The Cr(1)-Ge(5) bond length is 2.58 Å. There is one shorter (2.55 Å) and one longer (2.56 Å) Cr(1)-Ge(1) bond length. In the second Cr site, Cr(2) is bonded to two equivalent Ge(1), two equivalent Ge(4), and two equivalent Ge(5) atoms to form distorted CrGe6 cuboctahedra that share corners with two equivalent Zr(2)Ge7 pentagonal bipyramids, edges with two equivalent Cr(2)Ge6 cuboctahedra, and faces with two equivalent Zr(2)Ge7 pentagonal bipyramids. Both Cr(2)-Ge(1) bond lengths are 2.55 Å. Both Cr(2)-Ge(4) bond lengths are 2.58 Å. Both Cr(2)-Ge(5) bond lengths are 2.58 Å. There are five inequivalent Ge sites. In the first Ge site, Ge(2) is bonded in a 9-coordinate geometry to two equivalent Zr(2), four equivalent Zr(1), two equivalent Cr(1), and one Ge(2) atom. The Ge(2)-Ge(2) bond length is 2.59 Å. In the second Ge site, Ge(3) is bonded in a 7-coordinate geometry to four equivalent Zr(1), two equivalent Cr(1), and one Ge(3) atom. The Ge(3)-Ge(3) bond length is 2.64 Å. In the third Ge site, Ge(4) is bonded in a 9-coordinate geometry to two equivalent Zr(1), three equivalent Zr(2), two equivalent Cr(1), and two equivalent Cr(2) atoms. In the fourth Ge site, Ge(5) is bonded in a 6-coordinate geometry to two equivalent Zr(1), two equivalent Cr(1), and two equivalent Cr(2) atoms. In the fifth Ge site, Ge(1) is bonded in a 7-coordinate geometry to one Zr(2), two equivalent Zr(1), one Cr(2), two equivalent Cr(1), and one Ge(1) atom. The Ge(1)-Ge(1) bond length is 2.58 Å.