SrBeB2O5 crystallizes in the monoclinic P2_1/c space group. Sr(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(1), two equivalent O(3), and four equivalent O(5) atoms. Be(1) is bonded to one O(3), one O(4), and two equivalent O(2) atoms to form BeO4 tetrahedra that share corners with two equivalent Be(1)O4 tetrahedra and corners with four equivalent B(2)O4 tetrahedra. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(3), and one O(5) atom. In the second B site, B(2) is bonded to one O(1), one O(2), and two equivalent O(4) atoms to form BO4 tetrahedra that share corners with two equivalent B(2)O4 tetrahedra and corners with four equivalent Be(1)O4 tetrahedra. There are five inequivalent O sites. In the first O site, O(5) is bonded in a distorted single-bond geometry to four equivalent Sr(1) and one B(1) atom. In the second O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Sr(1), one B(1), and one B(2) atom. In the third O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Sr(1), two equivalent Be(1), and one B(2) atom. In the fourth O site, O(3) is bonded in a distorted bent 120 degrees geometry to two equivalent Sr(1), one Be(1), and one B(1) atom. In the fifth O site, O(4) is bonded in a trigonal planar geometry to one Be(1) and two equivalent B(2) atoms.
SrBeB2O5 crystallizes in the monoclinic P2_1/c space group. Sr(1) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(1), two equivalent O(3), and four equivalent O(5) atoms. The Sr(1)-O(2) bond length is 2.70 Å. There is one shorter (2.63 Å) and one longer (2.73 Å) Sr(1)-O(1) bond length. There is one shorter (2.50 Å) and one longer (2.68 Å) Sr(1)-O(3) bond length. There are a spread of Sr(1)-O(5) bond distances ranging from 2.58-2.87 Å. Be(1) is bonded to one O(3), one O(4), and two equivalent O(2) atoms to form BeO4 tetrahedra that share corners with two equivalent Be(1)O4 tetrahedra and corners with four equivalent B(2)O4 tetrahedra. The Be(1)-O(3) bond length is 1.62 Å. The Be(1)-O(4) bond length is 1.67 Å. There is one shorter (1.63 Å) and one longer (1.64 Å) Be(1)-O(2) bond length. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(1), one O(3), and one O(5) atom. The B(1)-O(1) bond length is 1.41 Å. The B(1)-O(3) bond length is 1.38 Å. The B(1)-O(5) bond length is 1.37 Å. In the second B site, B(2) is bonded to one O(1), one O(2), and two equivalent O(4) atoms to form BO4 tetrahedra that share corners with two equivalent B(2)O4 tetrahedra and corners with four equivalent Be(1)O4 tetrahedra. The B(2)-O(1) bond length is 1.50 Å. The B(2)-O(2) bond length is 1.47 Å. Both B(2)-O(4) bond lengths are 1.50 Å. There are five inequivalent O sites. In the first O site, O(5) is bonded in a distorted single-bond geometry to four equivalent Sr(1) and one B(1) atom. In the second O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Sr(1), one B(1), and one B(2) atom. In the third O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Sr(1), two equivalent Be(1), and one B(2) atom. In the fourth O site, O(3) is bonded in a distorted bent 120 degrees geometry to two equivalent Sr(1), one Be(1), and one B(1) atom. In the fifth O site, O(4) is bonded in a trigonal planar geometry to one Be(1) and two equivalent B(2) atoms.