The compound described by SrCa7CrMn7O24 is (Cubic) Perovskite-derived structured and crystallizes in the trigonal R3m space group. Sr(1) is bonded to three equivalent O(1), three equivalent O(5), and six equivalent O(3) atoms to form SrO12 cuboctahedra that share corners with twelve equivalent Ca(2)O12 cuboctahedra, faces with six equivalent Ca(1)O12 cuboctahedra,  a faceface with one Cr(1)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, faces with three equivalent Mn(1)O6 octahedra, and faces with three equivalent Mn(2)O6 octahedra. There are three inequivalent Ca sites. In the first Ca site, Ca(1) is bonded to one O(2), one O(6), two equivalent O(1), two equivalent O(4), two equivalent O(5), and four equivalent O(3) atoms to form CaO12 cuboctahedra that share corners with four equivalent Ca(3)O12 cuboctahedra, corners with eight equivalent Ca(1)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with four equivalent Ca(2)O12 cuboctahedra,  a faceface with one Cr(1)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, faces with three equivalent Mn(1)O6 octahedra, and faces with three equivalent Mn(2)O6 octahedra. In the second Ca site, Ca(2) is bonded to one O(1), one O(5), two equivalent O(2), two equivalent O(3), two equivalent O(6), and four equivalent O(4) atoms to form CaO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with eight equivalent Ca(2)O12 cuboctahedra, faces with two equivalent Ca(3)O12 cuboctahedra, faces with four equivalent Ca(1)O12 cuboctahedra,  a faceface with one Cr(1)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, faces with three equivalent Mn(1)O6 octahedra, and faces with three equivalent Mn(2)O6 octahedra. In the third Ca site, Ca(3) is bonded to three equivalent O(2), three equivalent O(6), and six equivalent O(4) atoms to form CaO12 cuboctahedra that share corners with twelve equivalent Ca(1)O12 cuboctahedra, faces with six equivalent Ca(2)O12 cuboctahedra,  a faceface with one Cr(1)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, faces with three equivalent Mn(1)O6 octahedra, and faces with three equivalent Mn(2)O6 octahedra. Cr(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form CrO6 octahedra that share corners with six equivalent Mn(1)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Ca(3)O12 cuboctahedra, faces with three equivalent Ca(1)O12 cuboctahedra, and faces with three equivalent Ca(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 1°. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form MnO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Ca(3)O12 cuboctahedra, faces with three equivalent Ca(1)O12 cuboctahedra, and faces with three equivalent Ca(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the second Mn site, Mn(2) is bonded to one O(5), one O(6), two equivalent O(3), and two equivalent O(4) atoms to form MnO6 octahedra that share corners with two equivalent Mn(3)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Ca(3)O12 cuboctahedra, faces with three equivalent Ca(1)O12 cuboctahedra, and faces with three equivalent Ca(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the third Mn site, Mn(3) is bonded to three equivalent O(5) and three equivalent O(6) atoms to form MnO6 octahedra that share corners with six equivalent Mn(2)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Ca(3)O12 cuboctahedra, faces with three equivalent Ca(1)O12 cuboctahedra, and faces with three equivalent Ca(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Sr(1), one Ca(2), two equivalent Ca(1), one Cr(1), and one Mn(1) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Ca(1), one Ca(3), two equivalent Ca(2), one Cr(1), and one Mn(1) atom. In the third O site, O(3) is bonded in a distorted linear geometry to one Sr(1), one Ca(2), two equivalent Ca(1), one Mn(1), and one Mn(2) atom. In the fourth O site, O(4) is bonded in a distorted linear geometry to one Ca(1), one Ca(3), two equivalent Ca(2), one Mn(1), and one Mn(2) atom. In the fifth O site, O(5) is bonded to one Sr(1), one Ca(2), two equivalent Ca(1), one Mn(2), and one Mn(3) atom to form distorted OSrCa3Mn2 octahedra that share corners with two equivalent O(6)Ca4Mn2 octahedra, faces with two equivalent O(6)Ca4Mn2 octahedra, and faces with two equivalent O(5)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles are 1°. In the sixth O site, O(6) is bonded to one Ca(1), one Ca(3), two equivalent Ca(2), one Mn(2), and one Mn(3) atom to form distorted OCa4Mn2 octahedra that share corners with two equivalent O(5)SrCa3Mn2 octahedra, faces with two equivalent O(6)Ca4Mn2 octahedra, and faces with two equivalent O(5)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles are 1°. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrCa7Mn7CrO24
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.631
_cell_length_b   7.631
_cell_length_c   7.631
_cell_angle_alpha   90.029
_cell_angle_beta   90.029
_cell_angle_gamma   90.029
_symmetry_Int_Tables_number   1
_cell_volume   444.368
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Sr  Sr0  1  0.252  0.252  0.252  1.0
  Ca  Ca1  1  0.253  0.253  0.747  1.0
  Ca  Ca2  1  0.253  0.747  0.253  1.0
  Ca  Ca3  1  0.254  0.747  0.747  1.0
  Ca  Ca4  1  0.747  0.253  0.253  1.0
  Ca  Ca5  1  0.747  0.254  0.747  1.0
  Ca  Ca6  1  0.747  0.747  0.254  1.0
  Ca  Ca7  1  0.746  0.746  0.746  1.0
  Mn  Mn8  1  0.999  0.999  0.500  1.0
  Mn  Mn9  1  0.999  0.500  0.999  1.0
  Mn  Mn10  1  0.999  0.501  0.501  1.0
  Mn  Mn11  1  0.500  0.999  0.999  1.0
  Mn  Mn12  1  0.501  0.999  0.501  1.0
  Mn  Mn13  1  0.501  0.501  0.999  1.0
  Mn  Mn14  1  0.500  0.500  0.500  1.0
  Cr  Cr15  1  0.998  0.998  0.998  1.0
  O  O16  1  0.997  0.997  0.246  1.0
  O  O17  1  0.000  0.000  0.754  1.0
  O  O18  1  0.997  0.503  0.249  1.0
  O  O19  1  1.000  0.501  0.751  1.0
  O  O20  1  0.503  0.997  0.249  1.0
  O  O21  1  0.501  1.000  0.751  1.0
  O  O22  1  0.503  0.503  0.250  1.0
  O  O23  1  0.501  0.501  0.750  1.0
  O  O24  1  0.246  0.997  0.997  1.0
  O  O25  1  0.249  0.997  0.503  1.0
  O  O26  1  0.249  0.503  0.997  1.0
  O  O27  1  0.250  0.503  0.503  1.0
  O  O28  1  0.754  0.000  0.000  1.0
  O  O29  1  0.751  1.000  0.501  1.0
  O  O30  1  0.751  0.501  1.000  1.0
  O  O31  1  0.750  0.501  0.501  1.0
  O  O32  1  0.997  0.246  0.997  1.0
  O  O33  1  0.997  0.249  0.503  1.0
  O  O34  1  0.000  0.754  0.000  1.0
  O  O35  1  1.000  0.751  0.501  1.0
  O  O36  1  0.503  0.249  0.997  1.0
  O  O37  1  0.503  0.250  0.503  1.0
  O  O38  1  0.501  0.751  1.000  1.0
  O  O39  1  0.501  0.750  0.501  1.0
[/CIF]
.
The compound described by SrCa7CrMn7O24 is (Cubic) Perovskite-derived structured and crystallizes in the trigonal R3m space group. Sr(1) is bonded to three equivalent O(1), three equivalent O(5), and six equivalent O(3) atoms to form SrO12 cuboctahedra that share corners with twelve equivalent Ca(2)O12 cuboctahedra, faces with six equivalent Ca(1)O12 cuboctahedra,  a faceface with one Cr(1)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, faces with three equivalent Mn(1)O6 octahedra, and faces with three equivalent Mn(2)O6 octahedra. There are three inequivalent Ca sites. In the first Ca site, Ca(1) is bonded to one O(2), one O(6), two equivalent O(1), two equivalent O(4), two equivalent O(5), and four equivalent O(3) atoms to form CaO12 cuboctahedra that share corners with four equivalent Ca(3)O12 cuboctahedra, corners with eight equivalent Ca(1)O12 cuboctahedra, faces with two equivalent Sr(1)O12 cuboctahedra, faces with four equivalent Ca(2)O12 cuboctahedra,  a faceface with one Cr(1)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, faces with three equivalent Mn(1)O6 octahedra, and faces with three equivalent Mn(2)O6 octahedra. In the second Ca site, Ca(2) is bonded to one O(1), one O(5), two equivalent O(2), two equivalent O(3), two equivalent O(6), and four equivalent O(4) atoms to form CaO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, corners with eight equivalent Ca(2)O12 cuboctahedra, faces with two equivalent Ca(3)O12 cuboctahedra, faces with four equivalent Ca(1)O12 cuboctahedra,  a faceface with one Cr(1)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, faces with three equivalent Mn(1)O6 octahedra, and faces with three equivalent Mn(2)O6 octahedra. In the third Ca site, Ca(3) is bonded to three equivalent O(2), three equivalent O(6), and six equivalent O(4) atoms to form CaO12 cuboctahedra that share corners with twelve equivalent Ca(1)O12 cuboctahedra, faces with six equivalent Ca(2)O12 cuboctahedra,  a faceface with one Cr(1)O6 octahedra,  a faceface with one Mn(3)O6 octahedra, faces with three equivalent Mn(1)O6 octahedra, and faces with three equivalent Mn(2)O6 octahedra. Cr(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form CrO6 octahedra that share corners with six equivalent Mn(1)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Ca(3)O12 cuboctahedra, faces with three equivalent Ca(1)O12 cuboctahedra, and faces with three equivalent Ca(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles are 1°. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms to form MnO6 octahedra that share corners with two equivalent Cr(1)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Ca(3)O12 cuboctahedra, faces with three equivalent Ca(1)O12 cuboctahedra, and faces with three equivalent Ca(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the second Mn site, Mn(2) is bonded to one O(5), one O(6), two equivalent O(3), and two equivalent O(4) atoms to form MnO6 octahedra that share corners with two equivalent Mn(3)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Ca(3)O12 cuboctahedra, faces with three equivalent Ca(1)O12 cuboctahedra, and faces with three equivalent Ca(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the third Mn site, Mn(3) is bonded to three equivalent O(5) and three equivalent O(6) atoms to form MnO6 octahedra that share corners with six equivalent Mn(2)O6 octahedra,  a faceface with one Sr(1)O12 cuboctahedra,  a faceface with one Ca(3)O12 cuboctahedra, faces with three equivalent Ca(1)O12 cuboctahedra, and faces with three equivalent Ca(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to one Sr(1), one Ca(2), two equivalent Ca(1), one Cr(1), and one Mn(1) atom. In the second O site, O(2) is bonded in a distorted linear geometry to one Ca(1), one Ca(3), two equivalent Ca(2), one Cr(1), and one Mn(1) atom. In the third O site, O(3) is bonded in a distorted linear geometry to one Sr(1), one Ca(2), two equivalent Ca(1), one Mn(1), and one Mn(2) atom. In the fourth O site, O(4) is bonded in a distorted linear geometry to one Ca(1), one Ca(3), two equivalent Ca(2), one Mn(1), and one Mn(2) atom. In the fifth O site, O(5) is bonded to one Sr(1), one Ca(2), two equivalent Ca(1), one Mn(2), and one Mn(3) atom to form distorted OSrCa3Mn2 octahedra that share corners with two equivalent O(6)Ca4Mn2 octahedra, faces with two equivalent O(6)Ca4Mn2 octahedra, and faces with two equivalent O(5)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles are 1°. In the sixth O site, O(6) is bonded to one Ca(1), one Ca(3), two equivalent Ca(2), one Mn(2), and one Mn(3) atom to form distorted OCa4Mn2 octahedra that share corners with two equivalent O(5)SrCa3Mn2 octahedra, faces with two equivalent O(6)Ca4Mn2 octahedra, and faces with two equivalent O(5)SrCa3Mn2 octahedra. The corner-sharing octahedral tilt angles are 1°. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrCa7Mn7CrO24
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.631
_cell_length_b   7.631
_cell_length_c   7.631
_cell_angle_alpha   90.029
_cell_angle_beta   90.029
_cell_angle_gamma   90.029
_symmetry_Int_Tables_number   1
_cell_volume   444.368
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Sr  Sr0  1  0.252  0.252  0.252  1.0
  Ca  Ca1  1  0.253  0.253  0.747  1.0
  Ca  Ca2  1  0.253  0.747  0.253  1.0
  Ca  Ca3  1  0.254  0.747  0.747  1.0
  Ca  Ca4  1  0.747  0.253  0.253  1.0
  Ca  Ca5  1  0.747  0.254  0.747  1.0
  Ca  Ca6  1  0.747  0.747  0.254  1.0
  Ca  Ca7  1  0.746  0.746  0.746  1.0
  Mn  Mn8  1  0.999  0.999  0.500  1.0
  Mn  Mn9  1  0.999  0.500  0.999  1.0
  Mn  Mn10  1  0.999  0.501  0.501  1.0
  Mn  Mn11  1  0.500  0.999  0.999  1.0
  Mn  Mn12  1  0.501  0.999  0.501  1.0
  Mn  Mn13  1  0.501  0.501  0.999  1.0
  Mn  Mn14  1  0.500  0.500  0.500  1.0
  Cr  Cr15  1  0.998  0.998  0.998  1.0
  O  O16  1  0.997  0.997  0.246  1.0
  O  O17  1  0.000  0.000  0.754  1.0
  O  O18  1  0.997  0.503  0.249  1.0
  O  O19  1  1.000  0.501  0.751  1.0
  O  O20  1  0.503  0.997  0.249  1.0
  O  O21  1  0.501  1.000  0.751  1.0
  O  O22  1  0.503  0.503  0.250  1.0
  O  O23  1  0.501  0.501  0.750  1.0
  O  O24  1  0.246  0.997  0.997  1.0
  O  O25  1  0.249  0.997  0.503  1.0
  O  O26  1  0.249  0.503  0.997  1.0
  O  O27  1  0.250  0.503  0.503  1.0
  O  O28  1  0.754  0.000  0.000  1.0
  O  O29  1  0.751  1.000  0.501  1.0
  O  O30  1  0.751  0.501  1.000  1.0
  O  O31  1  0.750  0.501  0.501  1.0
  O  O32  1  0.997  0.246  0.997  1.0
  O  O33  1  0.997  0.249  0.503  1.0
  O  O34  1  0.000  0.754  0.000  1.0
  O  O35  1  1.000  0.751  0.501  1.0
  O  O36  1  0.503  0.249  0.997  1.0
  O  O37  1  0.503  0.250  0.503  1.0
  O  O38  1  0.501  0.751  1.000  1.0
  O  O39  1  0.501  0.750  0.501  1.0
[/CIF]
.