Ca2Mn(PO5)2 crystallizes in the triclinic P-1 space group. Ca(1) is bonded in a 8-coordinate geometry to one O(1), one O(5), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Mn(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form distorted MnO6 octahedra that share corners with four equivalent P(1)O4 tetrahedra. 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 Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-59°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Ca(1) and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Ca(1) and one P(1) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Ca(1), one Mn(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Ca(1), one Mn(1), and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Ca(1) and one Mn(1) atom.
Ca2Mn(PO5)2 crystallizes in the triclinic P-1 space group. Ca(1) is bonded in a 8-coordinate geometry to one O(1), one O(5), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. The Ca(1)-O(1) bond length is 2.28 Å. The Ca(1)-O(5) bond length is 2.45 Å. There is one shorter (2.36 Å) and one longer (2.42 Å) Ca(1)-O(2) bond length. There is one shorter (2.63 Å) and one longer (2.85 Å) Ca(1)-O(3) bond length. There is one shorter (2.42 Å) and one longer (2.73 Å) Ca(1)-O(4) bond length. Mn(1) is bonded to two equivalent O(3), two equivalent O(4), and two equivalent O(5) atoms to form distorted MnO6 octahedra that share corners with four equivalent P(1)O4 tetrahedra. Both Mn(1)-O(3) bond lengths are 2.00 Å. Both Mn(1)-O(4) bond lengths are 2.31 Å. Both Mn(1)-O(5) bond lengths are 1.79 Å. 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 Mn(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 57-59°. The P(1)-O(1) bond length is 1.53 Å. The P(1)-O(2) bond length is 1.54 Å. The P(1)-O(3) bond length is 1.59 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 bent 150 degrees geometry to one Ca(1) and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Ca(1) and one P(1) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Ca(1), one Mn(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent Ca(1), one Mn(1), and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Ca(1) and one Mn(1) atom.