Eu2Cu(GeO3)4 crystallizes in the triclinic P-1 space group. Eu(1) is bonded in a 7-coordinate geometry to one O(1), one O(4), one O(5), two equivalent O(3), and two equivalent O(6) atoms. Cu(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(4) atoms. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form corner-sharing GeO4 tetrahedra. In the second Ge site, Ge(2) is bonded to one O(2), one O(4), one O(5), and one O(6) 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 one Eu(1), one Cu(1), and one Ge(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(2) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Eu(1) and one Ge(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Eu(1), one Cu(1), and one Ge(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Eu(1), one Ge(1), and one Ge(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to two equivalent Eu(1) and one Ge(2) atom.
Eu2Cu(GeO3)4 crystallizes in the triclinic P-1 space group. Eu(1) is bonded in a 7-coordinate geometry to one O(1), one O(4), one O(5), two equivalent O(3), and two equivalent O(6) atoms. The Eu(1)-O(1) bond length is 2.36 Å. The Eu(1)-O(4) bond length is 2.41 Å. The Eu(1)-O(5) bond length is 2.76 Å. There is one shorter (2.36 Å) and one longer (2.39 Å) Eu(1)-O(3) bond length. There is one shorter (2.34 Å) and one longer (2.45 Å) Eu(1)-O(6) bond length. Cu(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(4) atoms. Both Cu(1)-O(1) bond lengths are 1.93 Å. Both Cu(1)-O(4) bond lengths are 1.93 Å. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form corner-sharing GeO4 tetrahedra. The Ge(1)-O(1) bond length is 1.77 Å. The Ge(1)-O(2) bond length is 1.78 Å. The Ge(1)-O(3) bond length is 1.74 Å. The Ge(1)-O(5) bond length is 1.81 Å. In the second Ge site, Ge(2) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form corner-sharing GeO4 tetrahedra. The Ge(2)-O(2) bond length is 1.79 Å. The Ge(2)-O(4) bond length is 1.77 Å. The Ge(2)-O(5) bond length is 1.80 Å. The Ge(2)-O(6) bond length is 1.74 Å. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Eu(1), one Cu(1), and one Ge(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Ge(1) and one Ge(2) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Eu(1) and one Ge(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Eu(1), one Cu(1), and one Ge(2) atom. In the fifth O site, O(5) is bonded in a distorted bent 150 degrees geometry to one Eu(1), one Ge(1), and one Ge(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to two equivalent Eu(1) and one Ge(2) atom.