Ca2BeEuO5 crystallizes in the orthorhombic Pnma space group. Ca(1) is bonded in a 9-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and three equivalent O(4) atoms. Be(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(4) atoms. Eu(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), two equivalent O(1), and four equivalent O(4) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to four equivalent Ca(1) and two equivalent Eu(1) atoms. In the second O site, O(2) is bonded in a 6-coordinate geometry to four equivalent Ca(1), one Be(1), and one Eu(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to four equivalent Ca(1), one Be(1), and one Eu(1) atom. In the fourth O site, O(4) is bonded in a 1-coordinate geometry to three equivalent Ca(1), one Be(1), and two equivalent Eu(1) atoms.
Ca2BeEuO5 crystallizes in the orthorhombic Pnma space group. Ca(1) is bonded in a 9-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and three equivalent O(4) atoms. There is one shorter (2.49 Å) and one longer (2.60 Å) Ca(1)-O(1) bond length. There is one shorter (2.51 Å) and one longer (2.61 Å) Ca(1)-O(2) bond length. There is one shorter (2.48 Å) and one longer (2.52 Å) Ca(1)-O(3) bond length. There are a spread of Ca(1)-O(4) bond distances ranging from 2.51-2.82 Å. Be(1) is bonded in a tetrahedral geometry to one O(2), one O(3), and two equivalent O(4) atoms. The Be(1)-O(2) bond length is 1.67 Å. The Be(1)-O(3) bond length is 1.65 Å. Both Be(1)-O(4) bond lengths are 1.63 Å. Eu(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), two equivalent O(1), and four equivalent O(4) atoms. The Eu(1)-O(2) bond length is 2.39 Å. The Eu(1)-O(3) bond length is 2.52 Å. There is one shorter (2.36 Å) and one longer (2.86 Å) Eu(1)-O(1) bond length. There are two shorter (2.34 Å) and two longer (2.45 Å) Eu(1)-O(4) bond lengths. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to four equivalent Ca(1) and two equivalent Eu(1) atoms. In the second O site, O(2) is bonded in a 6-coordinate geometry to four equivalent Ca(1), one Be(1), and one Eu(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to four equivalent Ca(1), one Be(1), and one Eu(1) atom. In the fourth O site, O(4) is bonded in a 1-coordinate geometry to three equivalent Ca(1), one Be(1), and two equivalent Eu(1) atoms.