The material structure described by SrCa3Mn4O11 crystallizes in the orthorhombic Pmma space group. Sr(1) is bonded in a distorted q6 geometry to two equivalent O(2), four equivalent O(4), and four equivalent O(5) atoms. There are three inequivalent Ca sites. In the first Ca site, Ca(1) is bonded to two equivalent O(1), two equivalent O(3), four equivalent O(4), and four equivalent O(5) atoms to form CaO12 cuboctahedra that share corners with four equivalent Ca(3)O12 cuboctahedra, faces with two equivalent Ca(1)O12 cuboctahedra, faces with two equivalent Ca(3)O12 cuboctahedra, faces with four equivalent Mn(2)O6 octahedra, and faces with four equivalent Mn(1)O5 square pyramids. In the second Ca site, Ca(2) is bonded in a distorted q6 geometry to two equivalent O(2), four equivalent O(4), and four equivalent O(6) atoms. In the third Ca site, Ca(3) is bonded to two equivalent O(1), two equivalent O(3), four equivalent O(4), and four equivalent O(6) atoms to form CaO12 cuboctahedra that share corners with four equivalent Ca(1)O12 cuboctahedra, faces with two equivalent Ca(1)O12 cuboctahedra, faces with two equivalent Ca(3)O12 cuboctahedra, faces with four equivalent Mn(2)O6 octahedra, and faces with four equivalent Mn(1)O5 square pyramids. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(5), one O(6), and two equivalent O(4) atoms to form MnO5 square pyramids that share corners with four equivalent Mn(2)O6 octahedra,  a cornercorner with one Mn(1)O5 square pyramid, faces with two equivalent Ca(1)O12 cuboctahedra, and faces with two equivalent Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 5-12°. In the second Mn site, Mn(2) is bonded to one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form MnO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with four equivalent Mn(1)O5 square pyramids, faces with two equivalent Ca(1)O12 cuboctahedra, and faces with two equivalent Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are six inequivalent O sites. In the first O site, O(6) is bonded in a 2-coordinate geometry to two equivalent Ca(2), two equivalent Ca(3), one Mn(1), and one Mn(2) atom. In the second O site, O(1) is bonded in a distorted linear geometry to two equivalent Ca(1), two equivalent Ca(3), and two equivalent Mn(1) atoms. In the third O site, O(2) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Ca(2), and two equivalent Mn(2) atoms. In the fourth O site, O(3) is bonded to two equivalent Ca(1), two equivalent Ca(3), and two equivalent Mn(2) atoms to form distorted OCa4Mn2 octahedra that share corners with four equivalent O(3)Ca4Mn2 octahedra, corners with four equivalent O(5)Sr2Ca2Mn2 octahedra, and faces with two equivalent O(5)Sr2Ca2Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the fifth O site, O(4) is bonded in a 6-coordinate geometry to one Sr(1), one Ca(1), one Ca(2), one Ca(3), one Mn(1), and one Mn(2) atom. In the sixth O site, O(5) is bonded to two equivalent Sr(1), two equivalent Ca(1), one Mn(1), and one Mn(2) atom to form distorted OSr2Ca2Mn2 octahedra that share corners with two equivalent O(3)Ca4Mn2 octahedra, corners with four equivalent O(5)Sr2Ca2Mn2 octahedra, edges with four equivalent O(5)Sr2Ca2Mn2 octahedra, and  a faceface with one O(3)Ca4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrCa3Mn4O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.719
_cell_length_b   7.720
_cell_length_c   7.711
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   459.500
_cell_formula_units_Z   2
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  0.250  0.250  0.250  1.0
  Sr  Sr1  1  0.750  0.250  0.250  1.0
  Ca  Ca2  1  0.250  0.250  0.750  1.0
  Ca  Ca3  1  0.250  0.750  0.250  1.0
  Ca  Ca4  1  0.250  0.750  0.750  1.0
  Ca  Ca5  1  0.750  0.250  0.750  1.0
  Ca  Ca6  1  0.750  0.750  0.250  1.0
  Ca  Ca7  1  0.750  0.750  0.750  1.0
  Mn  Mn8  1  0.000  0.998  0.991  1.0
  Mn  Mn9  1  0.000  0.998  0.509  1.0
  Mn  Mn10  1  0.000  0.502  0.005  1.0
  Mn  Mn11  1  0.000  0.502  0.495  1.0
  Mn  Mn12  1  0.500  0.998  0.005  1.0
  Mn  Mn13  1  0.500  0.998  0.495  1.0
  Mn  Mn14  1  0.500  0.502  0.991  1.0
  Mn  Mn15  1  0.500  0.502  0.509  1.0
  O  O16  1  0.000  0.996  0.750  1.0
  O  O17  1  0.000  0.502  0.250  1.0
  O  O18  1  0.000  0.504  0.750  1.0
  O  O19  1  0.500  0.998  0.250  1.0
  O  O20  1  0.500  0.996  0.750  1.0
  O  O21  1  0.500  0.504  0.750  1.0
  O  O22  1  0.245  0.995  0.017  1.0
  O  O23  1  0.245  0.995  0.483  1.0
  O  O24  1  0.255  0.505  0.017  1.0
  O  O25  1  0.255  0.505  0.483  1.0
  O  O26  1  0.755  0.995  0.017  1.0
  O  O27  1  0.755  0.995  0.483  1.0
  O  O28  1  0.745  0.505  0.017  1.0
  O  O29  1  0.745  0.505  0.483  1.0
  O  O30  1  0.000  0.246  0.010  1.0
  O  O31  1  0.000  0.246  0.490  1.0
  O  O32  1  0.000  0.755  0.023  1.0
  O  O33  1  0.000  0.755  0.477  1.0
  O  O34  1  0.500  0.254  0.010  1.0
  O  O35  1  0.500  0.254  0.490  1.0
  O  O36  1  0.500  0.745  0.023  1.0
  O  O37  1  0.500  0.745  0.477  1.0
[/CIF]
.
The material structure described by SrCa3Mn4O11 crystallizes in the orthorhombic Pmma space group. Sr(1) is bonded in a distorted q6 geometry to two equivalent O(2), four equivalent O(4), and four equivalent O(5) atoms. There are three inequivalent Ca sites. In the first Ca site, Ca(1) is bonded to two equivalent O(1), two equivalent O(3), four equivalent O(4), and four equivalent O(5) atoms to form CaO12 cuboctahedra that share corners with four equivalent Ca(3)O12 cuboctahedra, faces with two equivalent Ca(1)O12 cuboctahedra, faces with two equivalent Ca(3)O12 cuboctahedra, faces with four equivalent Mn(2)O6 octahedra, and faces with four equivalent Mn(1)O5 square pyramids. In the second Ca site, Ca(2) is bonded in a distorted q6 geometry to two equivalent O(2), four equivalent O(4), and four equivalent O(6) atoms. In the third Ca site, Ca(3) is bonded to two equivalent O(1), two equivalent O(3), four equivalent O(4), and four equivalent O(6) atoms to form CaO12 cuboctahedra that share corners with four equivalent Ca(1)O12 cuboctahedra, faces with two equivalent Ca(1)O12 cuboctahedra, faces with two equivalent Ca(3)O12 cuboctahedra, faces with four equivalent Mn(2)O6 octahedra, and faces with four equivalent Mn(1)O5 square pyramids. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(5), one O(6), and two equivalent O(4) atoms to form MnO5 square pyramids that share corners with four equivalent Mn(2)O6 octahedra,  a cornercorner with one Mn(1)O5 square pyramid, faces with two equivalent Ca(1)O12 cuboctahedra, and faces with two equivalent Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 5-12°. In the second Mn site, Mn(2) is bonded to one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form MnO6 octahedra that share corners with two equivalent Mn(2)O6 octahedra, corners with four equivalent Mn(1)O5 square pyramids, faces with two equivalent Ca(1)O12 cuboctahedra, and faces with two equivalent Ca(3)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-1°. There are six inequivalent O sites. In the first O site, O(6) is bonded in a 2-coordinate geometry to two equivalent Ca(2), two equivalent Ca(3), one Mn(1), and one Mn(2) atom. In the second O site, O(1) is bonded in a distorted linear geometry to two equivalent Ca(1), two equivalent Ca(3), and two equivalent Mn(1) atoms. In the third O site, O(2) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Ca(2), and two equivalent Mn(2) atoms. In the fourth O site, O(3) is bonded to two equivalent Ca(1), two equivalent Ca(3), and two equivalent Mn(2) atoms to form distorted OCa4Mn2 octahedra that share corners with four equivalent O(3)Ca4Mn2 octahedra, corners with four equivalent O(5)Sr2Ca2Mn2 octahedra, and faces with two equivalent O(5)Sr2Ca2Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. In the fifth O site, O(4) is bonded in a 6-coordinate geometry to one Sr(1), one Ca(1), one Ca(2), one Ca(3), one Mn(1), and one Mn(2) atom. In the sixth O site, O(5) is bonded to two equivalent Sr(1), two equivalent Ca(1), one Mn(1), and one Mn(2) atom to form distorted OSr2Ca2Mn2 octahedra that share corners with two equivalent O(3)Ca4Mn2 octahedra, corners with four equivalent O(5)Sr2Ca2Mn2 octahedra, edges with four equivalent O(5)Sr2Ca2Mn2 octahedra, and  a faceface with one O(3)Ca4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-61°. is represented by the Crystallographic Information File (CIF) [CIF]
data_SrCa3Mn4O11
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.719
_cell_length_b   7.720
_cell_length_c   7.711
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   459.500
_cell_formula_units_Z   2
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  0.250  0.250  0.250  1.0
  Sr  Sr1  1  0.750  0.250  0.250  1.0
  Ca  Ca2  1  0.250  0.250  0.750  1.0
  Ca  Ca3  1  0.250  0.750  0.250  1.0
  Ca  Ca4  1  0.250  0.750  0.750  1.0
  Ca  Ca5  1  0.750  0.250  0.750  1.0
  Ca  Ca6  1  0.750  0.750  0.250  1.0
  Ca  Ca7  1  0.750  0.750  0.750  1.0
  Mn  Mn8  1  0.000  0.998  0.991  1.0
  Mn  Mn9  1  0.000  0.998  0.509  1.0
  Mn  Mn10  1  0.000  0.502  0.005  1.0
  Mn  Mn11  1  0.000  0.502  0.495  1.0
  Mn  Mn12  1  0.500  0.998  0.005  1.0
  Mn  Mn13  1  0.500  0.998  0.495  1.0
  Mn  Mn14  1  0.500  0.502  0.991  1.0
  Mn  Mn15  1  0.500  0.502  0.509  1.0
  O  O16  1  0.000  0.996  0.750  1.0
  O  O17  1  0.000  0.502  0.250  1.0
  O  O18  1  0.000  0.504  0.750  1.0
  O  O19  1  0.500  0.998  0.250  1.0
  O  O20  1  0.500  0.996  0.750  1.0
  O  O21  1  0.500  0.504  0.750  1.0
  O  O22  1  0.245  0.995  0.017  1.0
  O  O23  1  0.245  0.995  0.483  1.0
  O  O24  1  0.255  0.505  0.017  1.0
  O  O25  1  0.255  0.505  0.483  1.0
  O  O26  1  0.755  0.995  0.017  1.0
  O  O27  1  0.755  0.995  0.483  1.0
  O  O28  1  0.745  0.505  0.017  1.0
  O  O29  1  0.745  0.505  0.483  1.0
  O  O30  1  0.000  0.246  0.010  1.0
  O  O31  1  0.000  0.246  0.490  1.0
  O  O32  1  0.000  0.755  0.023  1.0
  O  O33  1  0.000  0.755  0.477  1.0
  O  O34  1  0.500  0.254  0.010  1.0
  O  O35  1  0.500  0.254  0.490  1.0
  O  O36  1  0.500  0.745  0.023  1.0
  O  O37  1  0.500  0.745  0.477  1.0
[/CIF]
.