CuYb2Ge4O12 crystallizes in the triclinic P-1 space group. Yb(1) is bonded in a 7-coordinate geometry to one O(3), one O(5), one O(6), two equivalent O(1), and two equivalent O(2) atoms. Cu(1) is bonded in a distorted square co-planar geometry to two equivalent O(5) and two equivalent O(6) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(3), one O(4), and one O(6) atom to form corner-sharing GeO4 tetrahedra. In the second Ge site, Ge(2) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form corner-sharing GeO4 tetrahedra. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Yb(1) and one Ge(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Yb(1) and one Ge(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Yb(1), one Ge(1), and one Ge(2) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Yb(1), one Cu(1), and one Ge(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Yb(1), one Cu(1), and one Ge(1) atom.
CuYb2Ge4O12 crystallizes in the triclinic P-1 space group. Yb(1) is bonded in a 7-coordinate geometry to one O(3), one O(5), one O(6), two equivalent O(1), and two equivalent O(2) atoms. The Yb(1)-O(3) bond length is 2.45 Å. The Yb(1)-O(5) bond length is 2.26 Å. The Yb(1)-O(6) bond length is 2.31 Å. There is one shorter (2.43 Å) and one longer (2.50 Å) Yb(1)-O(1) bond length. There is one shorter (2.24 Å) and one longer (2.29 Å) Yb(1)-O(2) bond length. Cu(1) is bonded in a distorted square co-planar geometry to two equivalent O(5) and two equivalent O(6) atoms. Both Cu(1)-O(5) bond lengths are 1.84 Å. Both Cu(1)-O(6) bond lengths are 1.83 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(3), one O(4), and one O(6) atom to form corner-sharing GeO4 tetrahedra. The Ge(1)-O(1) bond length is 1.76 Å. The Ge(1)-O(3) bond length is 1.75 Å. The Ge(1)-O(4) bond length is 1.77 Å. The Ge(1)-O(6) bond length is 1.74 Å. In the second Ge site, Ge(2) is bonded to one O(2), one O(3), one O(4), and one O(5) atom to form corner-sharing GeO4 tetrahedra. The Ge(2)-O(2) bond length is 1.70 Å. The Ge(2)-O(3) bond length is 1.80 Å. The Ge(2)-O(4) bond length is 1.78 Å. The Ge(2)-O(5) bond length is 1.75 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Yb(1) and one Ge(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Yb(1) and one Ge(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Yb(1), one Ge(1), and one Ge(2) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal non-coplanar geometry to one Yb(1), one Cu(1), and one Ge(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Yb(1), one Cu(1), and one Ge(1) atom.