Na2BeB2O5 crystallizes in the monoclinic C2/c space group. Na(1) is bonded in a 6-coordinate geometry to one O(3), two equivalent O(1), and three equivalent O(2) atoms. Be(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. B(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Na(1), one Be(1), and one B(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Na(1), one Be(1), and one B(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to two equivalent Na(1) and two equivalent B(1) atoms.
Na2BeB2O5 crystallizes in the monoclinic C2/c space group. Na(1) is bonded in a 6-coordinate geometry to one O(3), two equivalent O(1), and three equivalent O(2) atoms. The Na(1)-O(3) bond length is 2.49 Å. There is one shorter (2.36 Å) and one longer (2.42 Å) Na(1)-O(1) bond length. There are a spread of Na(1)-O(2) bond distances ranging from 2.35-2.64 Å. Be(1) is bonded in a tetrahedral geometry to two equivalent O(1) and two equivalent O(2) atoms. Both Be(1)-O(1) bond lengths are 1.64 Å. Both Be(1)-O(2) bond lengths are 1.67 Å. B(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(3) atom. The B(1)-O(1) bond length is 1.36 Å. The B(1)-O(2) bond length is 1.37 Å. The B(1)-O(3) bond length is 1.42 Å. There are three inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Na(1), one Be(1), and one B(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to three equivalent Na(1), one Be(1), and one B(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to two equivalent Na(1) and two equivalent B(1) atoms.