BeMnPO5 crystallizes in the monoclinic P2_1/c space group. Be(1) is bonded to one O(2), one O(3), and two equivalent O(5) atoms to form BeO4 tetrahedra that share corners with two equivalent Be(1)O4 tetrahedra and corners with two equivalent P(1)O4 tetrahedra. Mn(1) is bonded in a 6-coordinate geometry to one O(2), one O(5), two equivalent O(1), and two equivalent O(4) atoms. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with two equivalent Be(1)O4 tetrahedra. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Mn(1) and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Be(1), one Mn(1), and one P(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Be(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Mn(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to two equivalent Be(1) and one Mn(1) atom.
BeMnPO5 crystallizes in the monoclinic P2_1/c space group. Be(1) is bonded to one O(2), one O(3), and two equivalent O(5) atoms to form BeO4 tetrahedra that share corners with two equivalent Be(1)O4 tetrahedra and corners with two equivalent P(1)O4 tetrahedra. The Be(1)-O(2) bond length is 1.67 Å. The Be(1)-O(3) bond length is 1.62 Å. There is one shorter (1.66 Å) and one longer (1.70 Å) Be(1)-O(5) bond length. Mn(1) is bonded in a 6-coordinate geometry to one O(2), one O(5), two equivalent O(1), and two equivalent O(4) atoms. The Mn(1)-O(2) bond length is 2.03 Å. The Mn(1)-O(5) bond length is 1.89 Å. There is one shorter (2.02 Å) and one longer (2.60 Å) Mn(1)-O(1) bond length. There is one shorter (2.05 Å) and one longer (2.25 Å) Mn(1)-O(4) bond length. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with two equivalent Be(1)O4 tetrahedra. The P(1)-O(1) bond length is 1.56 Å. The P(1)-O(2) bond length is 1.56 Å. The P(1)-O(3) bond length is 1.51 Å. The P(1)-O(4) bond length is 1.56 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Mn(1) and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to one Be(1), one Mn(1), and one P(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Be(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Mn(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to two equivalent Be(1) and one Mn(1) atom.