CaMn2P2(H2O5)2 crystallizes in the triclinic P1 space group. Ca(1) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(5), one O(6), and one O(8) atom. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(4), one O(5), one O(7), and one O(9) atom to form distorted MnO4 trigonal pyramids that share  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 70°. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(3), one O(6), one O(8), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  a cornercorner with one Mn(1)O4 trigonal pyramid. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(5), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Mn(2)O6 octahedra and  a cornercorner with one Mn(1)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 37-55°. In the second P site, P(2) is bonded to one O(3), one O(4), one O(7), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Mn(2)O6 octahedra and corners with two equivalent Mn(1)O4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 45-58°. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(10) atom. In the second H site, H(2) is bonded in a linear geometry to one O(10) and one O(2) atom. In the third H site, H(3) is bonded in a linear geometry to one O(7) and one O(9) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(8) and one O(9) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Ca(1), one Mn(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Ca(1), one P(1), and one H(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Ca(1), one Mn(2), and one P(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Mn(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ca(1), one Mn(1), and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Ca(1), one Mn(2), and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Mn(1), one P(2), and one H(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal pyramidal geometry to one Ca(1), one Mn(2), one P(2), and one H(4) atom. In the ninth O site, O(9) is bonded in a distorted water-like geometry to one Mn(1), one Mn(2), one H(3), and one H(4) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one Ca(1), one Mn(2), one H(1), and one H(2) atom.
CaMn2P2(H2O5)2 crystallizes in the triclinic P1 space group. Ca(1) is bonded in a 7-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(5), one O(6), and one O(8) atom. The Ca(1)-O(1) bond length is 2.42 Å. The Ca(1)-O(10) bond length is 2.38 Å. The Ca(1)-O(2) bond length is 2.33 Å. The Ca(1)-O(3) bond length is 2.41 Å. The Ca(1)-O(5) bond length is 2.68 Å. The Ca(1)-O(6) bond length is 2.48 Å. The Ca(1)-O(8) bond length is 2.50 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(4), one O(5), one O(7), and one O(9) atom to form distorted MnO4 trigonal pyramids that share  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles are 70°. The Mn(1)-O(4) bond length is 2.02 Å. The Mn(1)-O(5) bond length is 2.07 Å. The Mn(1)-O(7) bond length is 2.07 Å. The Mn(1)-O(9) bond length is 2.17 Å. In the second Mn site, Mn(2) is bonded to one O(1), one O(10), one O(3), one O(6), one O(8), and one O(9) atom to form MnO6 octahedra that share corners with two equivalent P(1)O4 tetrahedra, corners with two equivalent P(2)O4 tetrahedra, and  a cornercorner with one Mn(1)O4 trigonal pyramid. The Mn(2)-O(1) bond length is 2.17 Å. The Mn(2)-O(10) bond length is 2.27 Å. The Mn(2)-O(3) bond length is 2.10 Å. The Mn(2)-O(6) bond length is 2.20 Å. The Mn(2)-O(8) bond length is 2.32 Å. The Mn(2)-O(9) bond length is 2.32 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(2), one O(5), and one O(6) atom to form PO4 tetrahedra that share corners with two equivalent Mn(2)O6 octahedra and  a cornercorner with one Mn(1)O4 trigonal pyramid. The corner-sharing octahedral tilt angles range from 37-55°. 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(5) bond length is 1.57 Å. The P(1)-O(6) bond length is 1.55 Å. In the second P site, P(2) is bonded to one O(3), one O(4), one O(7), and one O(8) atom to form PO4 tetrahedra that share corners with two equivalent Mn(2)O6 octahedra and corners with two equivalent Mn(1)O4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 45-58°. The P(2)-O(3) bond length is 1.56 Å. The P(2)-O(4) bond length is 1.53 Å. The P(2)-O(7) bond length is 1.57 Å. The P(2)-O(8) bond length is 1.58 Å. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(10) atom. The H(1)-O(10) bond length is 0.98 Å. In the second H site, H(2) is bonded in a linear geometry to one O(10) and one O(2) atom. The H(2)-O(10) bond length is 1.05 Å. The H(2)-O(2) bond length is 1.47 Å. In the third H site, H(3) is bonded in a linear geometry to one O(7) and one O(9) atom. The H(3)-O(7) bond length is 1.55 Å. The H(3)-O(9) bond length is 1.03 Å. In the fourth H site, H(4) is bonded in a single-bond geometry to one O(8) and one O(9) atom. The H(4)-O(8) bond length is 1.69 Å. The H(4)-O(9) bond length is 1.01 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Ca(1), one Mn(2), and one P(1) atom. In the second O site, O(2) is bonded in a distorted trigonal non-coplanar geometry to one Ca(1), one P(1), and one H(2) atom. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Ca(1), one Mn(2), and one P(2) atom. In the fourth O site, O(4) is bonded in a distorted bent 150 degrees geometry to one Mn(1) and one P(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Ca(1), one Mn(1), and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Ca(1), one Mn(2), and one P(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Mn(1), one P(2), and one H(3) atom. In the eighth O site, O(8) is bonded in a distorted trigonal pyramidal geometry to one Ca(1), one Mn(2), one P(2), and one H(4) atom. In the ninth O site, O(9) is bonded in a distorted water-like geometry to one Mn(1), one Mn(2), one H(3), and one H(4) atom. In the tenth O site, O(10) is bonded in a distorted bent 120 degrees geometry to one Ca(1), one Mn(2), one H(1), and one H(2) atom.