Na2TbCPO7 crystallizes in the monoclinic P2_1/m space group. Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. Tb(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. P(1) is bonded in a tetrahedral geometry to one O(5), one O(6), and two equivalent O(4) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Na(1) and one C(1) atom. In the second O site, O(2) is bonded to two equivalent Na(1), one Tb(1), and one C(1) atom to form distorted ONa2TbC trigonal pyramids that share corners with three equivalent O(6)Na2TbP tetrahedra and edges with two equivalent O(3)Na2TbC trigonal pyramids. In the third O site, O(3) is bonded to two equivalent Na(1), one Tb(1), and one C(1) atom to form distorted ONa2TbC trigonal pyramids that share corners with three equivalent O(6)Na2TbP tetrahedra and edges with two equivalent O(2)Na2TbC trigonal pyramids. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Tb(1), and one P(1) atom. In the fifth O site, O(5) is bonded in a 1-coordinate geometry to two equivalent Na(1), one Tb(1), and one P(1) atom. In the sixth O site, O(6) is bonded to two equivalent Na(1), one Tb(1), and one P(1) atom to form distorted corner-sharing ONa2TbP tetrahedra.
Na2TbCPO7 crystallizes in the monoclinic P2_1/m space group. Na(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom. The Na(1)-O(1) bond length is 2.23 Å. The Na(1)-O(2) bond length is 2.36 Å. The Na(1)-O(3) bond length is 2.43 Å. The Na(1)-O(4) bond length is 2.57 Å. The Na(1)-O(5) bond length is 2.60 Å. The Na(1)-O(6) bond length is 2.67 Å. Tb(1) is bonded in a 6-coordinate geometry to one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms. The Tb(1)-O(2) bond length is 2.39 Å. The Tb(1)-O(3) bond length is 2.29 Å. The Tb(1)-O(5) bond length is 2.37 Å. The Tb(1)-O(6) bond length is 2.30 Å. Both Tb(1)-O(4) bond lengths are 2.26 Å. C(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. The C(1)-O(1) bond length is 1.26 Å. The C(1)-O(2) bond length is 1.31 Å. The C(1)-O(3) bond length is 1.33 Å. P(1) is bonded in a tetrahedral geometry to one O(5), one O(6), and two equivalent O(4) atoms. The P(1)-O(5) bond length is 1.58 Å. The P(1)-O(6) bond length is 1.56 Å. Both P(1)-O(4) bond lengths are 1.54 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 Na(1) and one C(1) atom. In the second O site, O(2) is bonded to two equivalent Na(1), one Tb(1), and one C(1) atom to form distorted ONa2TbC trigonal pyramids that share corners with three equivalent O(6)Na2TbP tetrahedra and edges with two equivalent O(3)Na2TbC trigonal pyramids. In the third O site, O(3) is bonded to two equivalent Na(1), one Tb(1), and one C(1) atom to form distorted ONa2TbC trigonal pyramids that share corners with three equivalent O(6)Na2TbP tetrahedra and edges with two equivalent O(2)Na2TbC trigonal pyramids. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Na(1), one Tb(1), and one P(1) atom. In the fifth O site, O(5) is bonded in a 1-coordinate geometry to two equivalent Na(1), one Tb(1), and one P(1) atom. In the sixth O site, O(6) is bonded to two equivalent Na(1), one Tb(1), and one P(1) atom to form distorted corner-sharing ONa2TbP tetrahedra.