Na2Y2B2TeO10 crystallizes in the monoclinic P2_1/c space group. Na(1) is bonded in a 8-coordinate geometry to one O(2), one O(4), two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms. Y(1) is bonded in a 7-coordinate geometry to one O(1), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. B(1) is bonded in a trigonal planar geometry to one O(1), one O(3), and one O(4) atom. Te(1) is bonded in an octahedral geometry to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Na(1), one Y(1), and one B(1) atom. In the second O site, O(2) is bonded to one Na(1), two equivalent Y(1), and one Te(1) atom to form distorted corner-sharing ONaY2Te tetrahedra. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Na(1), one B(1), and one Te(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Na(1), two equivalent Y(1), and one B(1) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to two equivalent Na(1), two equivalent Y(1), and one Te(1) atom.
Na2Y2B2TeO10 crystallizes in the monoclinic P2_1/c space group. Na(1) is bonded in a 8-coordinate geometry to one O(2), one O(4), two equivalent O(1), two equivalent O(3), and two equivalent O(5) atoms. The Na(1)-O(2) bond length is 2.64 Å. The Na(1)-O(4) bond length is 2.45 Å. There is one shorter (2.34 Å) and one longer (2.96 Å) Na(1)-O(1) bond length. There is one shorter (2.56 Å) and one longer (2.62 Å) Na(1)-O(3) bond length. There is one shorter (2.83 Å) and one longer (2.96 Å) Na(1)-O(5) bond length. Y(1) is bonded in a 7-coordinate geometry to one O(1), two equivalent O(2), two equivalent O(4), and two equivalent O(5) atoms. The Y(1)-O(1) bond length is 2.22 Å. There is one shorter (2.31 Å) and one longer (2.38 Å) Y(1)-O(2) bond length. There is one shorter (2.32 Å) and one longer (2.37 Å) Y(1)-O(4) bond length. There is one shorter (2.34 Å) and one longer (2.49 Å) Y(1)-O(5) bond length. B(1) is bonded in a trigonal planar geometry to one O(1), one O(3), and one O(4) atom. The B(1)-O(1) bond length is 1.36 Å. The B(1)-O(3) bond length is 1.43 Å. The B(1)-O(4) bond length is 1.38 Å. Te(1) is bonded in an octahedral geometry to two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms. Both Te(1)-O(2) bond lengths are 1.94 Å. Both Te(1)-O(3) bond lengths are 2.01 Å. Both Te(1)-O(5) bond lengths are 1.93 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Na(1), one Y(1), and one B(1) atom. In the second O site, O(2) is bonded to one Na(1), two equivalent Y(1), and one Te(1) atom to form distorted corner-sharing ONaY2Te tetrahedra. In the third O site, O(3) is bonded in a 4-coordinate geometry to two equivalent Na(1), one B(1), and one Te(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Na(1), two equivalent Y(1), and one B(1) atom. In the fifth O site, O(5) is bonded in a 5-coordinate geometry to two equivalent Na(1), two equivalent Y(1), and one Te(1) atom.