Cr2Mn3Fe(PO4)6 crystallizes in the trigonal R3 space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to three equivalent O(2) and three equivalent O(6) atoms to form distorted CrO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra,  a faceface with one Mn(1)O6 octahedra, and  a faceface with one Fe(1)O6 octahedra. In the second Cr site, Cr(2) is bonded to three equivalent O(4) and three equivalent O(7) atoms to form distorted CrO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra,  a faceface with one Mn(2)O6 octahedra, and  a faceface with one Mn(3)O6 octahedra. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to three equivalent O(2) and three equivalent O(5) atoms to form distorted MnO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  a faceface with one Cr(1)O6 octahedra. In the second Mn site, Mn(2) is bonded to three equivalent O(1) and three equivalent O(4) atoms to form distorted MnO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  a faceface with one Cr(2)O6 octahedra. In the third Mn site, Mn(3) is bonded to three equivalent O(7) and three equivalent O(8) atoms to form distorted MnO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  a faceface with one Cr(2)O6 octahedra. Fe(1) is bonded to three equivalent O(3) and three equivalent O(6) atoms to form distorted FeO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  a faceface with one Cr(1)O6 octahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(5), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra, and  a cornercorner with one Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 31-53°. In the second P site, P(2) is bonded to one O(2), one O(3), one O(4), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra, and  a cornercorner with one Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-54°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mn(2) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Cr(1), one Mn(1), and one P(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Cr(2), one Mn(2), and one P(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Cr(1), one Fe(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Cr(2), one Mn(3), and one P(1) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Mn(3) and one P(2) atom.
Cr2Mn3Fe(PO4)6 crystallizes in the trigonal R3 space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to three equivalent O(2) and three equivalent O(6) atoms to form distorted CrO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra,  a faceface with one Mn(1)O6 octahedra, and  a faceface with one Fe(1)O6 octahedra. All Cr(1)-O(2) bond lengths are 2.10 Å. All Cr(1)-O(6) bond lengths are 2.09 Å. In the second Cr site, Cr(2) is bonded to three equivalent O(4) and three equivalent O(7) atoms to form distorted CrO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra,  a faceface with one Mn(2)O6 octahedra, and  a faceface with one Mn(3)O6 octahedra. All Cr(2)-O(4) bond lengths are 2.09 Å. All Cr(2)-O(7) bond lengths are 2.09 Å. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to three equivalent O(2) and three equivalent O(5) atoms to form distorted MnO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  a faceface with one Cr(1)O6 octahedra. All Mn(1)-O(2) bond lengths are 2.11 Å. All Mn(1)-O(5) bond lengths are 1.97 Å. In the second Mn site, Mn(2) is bonded to three equivalent O(1) and three equivalent O(4) atoms to form distorted MnO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  a faceface with one Cr(2)O6 octahedra. All Mn(2)-O(1) bond lengths are 1.97 Å. All Mn(2)-O(4) bond lengths are 2.12 Å. In the third Mn site, Mn(3) is bonded to three equivalent O(7) and three equivalent O(8) atoms to form distorted MnO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  a faceface with one Cr(2)O6 octahedra. All Mn(3)-O(7) bond lengths are 2.10 Å. All Mn(3)-O(8) bond lengths are 1.96 Å. Fe(1) is bonded to three equivalent O(3) and three equivalent O(6) atoms to form distorted FeO6 octahedra that share corners with three equivalent P(1)O4 tetrahedra, corners with three equivalent P(2)O4 tetrahedra, and  a faceface with one Cr(1)O6 octahedra. All Fe(1)-O(3) bond lengths are 1.93 Å. All Fe(1)-O(6) bond lengths are 2.10 Å. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(5), one O(6), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra, and  a cornercorner with one Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 31-53°. The P(1)-O(1) bond length is 1.52 Å. The P(1)-O(5) bond length is 1.52 Å. The P(1)-O(6) bond length is 1.58 Å. The P(1)-O(7) bond length is 1.58 Å. In the second P site, P(2) is bonded to one O(2), one O(3), one O(4), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Cr(1)O6 octahedra,  a cornercorner with one Cr(2)O6 octahedra,  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(2)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra, and  a cornercorner with one Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 29-54°. The P(2)-O(2) bond length is 1.58 Å. The P(2)-O(3) bond length is 1.52 Å. The P(2)-O(4) bond length is 1.58 Å. The P(2)-O(8) bond length is 1.52 Å. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Mn(2) and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Cr(1), one Mn(1), and one P(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Fe(1) and one P(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Cr(2), one Mn(2), and one P(2) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Mn(1) and one P(1) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Cr(1), one Fe(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Cr(2), one Mn(3), and one P(1) atom. In the eighth O site, O(8) is bonded in a bent 150 degrees geometry to one Mn(3) and one P(2) atom.