The crystal structure described by Sr4Fe3O10 crystallizes in the triclinic P-1 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(1), one O(3), one O(4), one O(8), one O(9), two equivalent O(2), and two equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one O(3), one O(4), one O(6), one O(9), two equivalent O(5), and two equivalent O(7) atoms. In the third Sr site, Sr(3) is bonded in a 8-coordinate geometry to one O(3), one O(4), one O(6), one O(8), two equivalent O(10), and two equivalent O(7) atoms. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one O(1), one O(3), one O(4), one O(8), one O(9), two equivalent O(10), and two equivalent O(2) atoms. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(2), one O(3), one O(5), one O(7), and one O(8) atom to form FeO6 octahedra that share corners with four equivalent Fe(2)O6 octahedra and  a cornercorner with one Fe(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 3-11°. In the second Fe site, Fe(2) is bonded to one O(10), one O(2), one O(4), one O(5), one O(7), and one O(9) atom to form FeO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra and  a cornercorner with one Fe(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 3-11°. In the third Fe site, Fe(3) is bonded to one O(1), one O(8), one O(9), and two equivalent O(6) atoms to form FeO5 trigonal bipyramids that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, and  an edgeedge with one Fe(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 27°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Sr(1), one Sr(4), and one Fe(3) atom. In the second O site, O(2) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(4), one Fe(1), and one Fe(2) atom. In the third O site, O(3) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), and one Fe(1) atom to form distorted OSr4Fe square pyramids that share corners with two equivalent O(10)Sr4Fe2 octahedra, corners with two equivalent O(5)Sr4Fe2 octahedra, corners with two equivalent O(6)Sr2Fe2 tetrahedra, edges with two equivalent O(4)Sr4Fe square pyramids,  a faceface with one O(10)Sr4Fe2 octahedra, and  a faceface with one O(5)Sr4Fe2 octahedra. The corner-sharing octahedral tilt angles range from 55-64°. In the fourth O site, O(4) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), and one Fe(2) atom to form distorted OSr4Fe square pyramids that share corners with two equivalent O(10)Sr4Fe2 octahedra, corners with two equivalent O(5)Sr4Fe2 octahedra, corners with two equivalent O(6)Sr2Fe2 tetrahedra, edges with two equivalent O(3)Sr4Fe square pyramids,  a faceface with one O(10)Sr4Fe2 octahedra, and  a faceface with one O(5)Sr4Fe2 octahedra. The corner-sharing octahedral tilt angles range from 50-59°. In the fifth O site, O(5) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Fe(1), and one Fe(2) atom to form distorted OSr4Fe2 octahedra that share corners with two equivalent O(10)Sr4Fe2 octahedra, corners with two equivalent O(3)Sr4Fe square pyramids, corners with two equivalent O(4)Sr4Fe square pyramids, corners with two equivalent O(6)Sr2Fe2 tetrahedra, edges with two equivalent O(5)Sr4Fe2 octahedra,  a faceface with one O(3)Sr4Fe square pyramid, and  a faceface with one O(4)Sr4Fe square pyramid. The corner-sharing octahedral tilt angles range from 1-5°. In the sixth O site, O(6) is bonded to one Sr(2), one Sr(3), and two equivalent Fe(3) atoms to form OSr2Fe2 tetrahedra that share corners with two equivalent O(10)Sr4Fe2 octahedra, corners with two equivalent O(5)Sr4Fe2 octahedra, corners with two equivalent O(3)Sr4Fe square pyramids, corners with two equivalent O(4)Sr4Fe square pyramids, and  an edgeedge with one O(6)Sr2Fe2 tetrahedra. The corner-sharing octahedral tilt angles range from 52-53°. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to two equivalent Sr(2), two equivalent Sr(3), one Fe(1), and one Fe(2) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(3), one Sr(4), one Fe(1), and one Fe(3) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), one Sr(4), one Fe(2), and one Fe(3) atom. In the tenth O site, O(10) is bonded to two equivalent Sr(3), two equivalent Sr(4), one Fe(1), and one Fe(2) atom to form distorted OSr4Fe2 octahedra that share corners with two equivalent O(5)Sr4Fe2 octahedra, corners with two equivalent O(3)Sr4Fe square pyramids, corners with two equivalent O(4)Sr4Fe square pyramids, corners with two equivalent O(6)Sr2Fe2 tetrahedra, edges with two equivalent O(10)Sr4Fe2 octahedra,  a faceface with one O(3)Sr4Fe square pyramid, and  a faceface with one O(4)Sr4Fe square pyramid. The corner-sharing octahedral tilt angles range from 1-5°. is represented by the CIF file [CIF]
data_Sr4Fe3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.972
_cell_length_b   7.714
_cell_length_c   8.951
_cell_angle_alpha   90.432
_cell_angle_beta   71.276
_cell_angle_gamma   46.647
_symmetry_Int_Tables_number   1
_cell_volume   492.306
_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  0.136  0.108  0.233  1.0
  Sr  Sr1  1  0.156  0.585  0.222  1.0
  Sr  Sr2  1  0.622  0.133  0.223  1.0
  Sr  Sr3  1  0.344  0.415  0.778  1.0
  Sr  Sr4  1  0.630  0.627  0.234  1.0
  Sr  Sr5  1  0.364  0.892  0.767  1.0
  Sr  Sr6  1  0.870  0.373  0.766  1.0
  Sr  Sr7  1  0.878  0.867  0.777  1.0
  Fe  Fe8  1  0.994  0.007  0.010  1.0
  Fe  Fe9  1  0.506  0.993  0.990  1.0
  Fe  Fe10  1  0.499  0.502  0.001  1.0
  Fe  Fe11  1  0.774  0.175  0.501  1.0
  Fe  Fe12  1  0.001  0.498  0.999  1.0
  Fe  Fe13  1  0.726  0.825  0.499  1.0
  O  O14  1  0.960  0.125  0.501  1.0
  O  O15  1  0.996  0.246  0.011  1.0
  O  O16  1  0.378  0.126  0.224  1.0
  O  O17  1  0.104  0.402  0.767  1.0
  O  O18  1  0.253  0.747  0.014  1.0
  O  O19  1  0.247  0.253  0.986  1.0
  O  O20  1  0.396  0.598  0.233  1.0
  O  O21  1  0.122  0.874  0.776  1.0
  O  O22  1  0.597  0.176  0.500  1.0
  O  O23  1  0.504  0.754  0.989  1.0
  O  O24  1  0.515  0.226  0.971  1.0
  O  O25  1  0.833  0.182  0.271  1.0
  O  O26  1  0.604  0.408  0.724  1.0
  O  O27  1  0.540  0.875  0.499  1.0
  O  O28  1  0.755  0.744  0.017  1.0
  O  O29  1  0.745  0.256  0.983  1.0
  O  O30  1  0.896  0.592  0.276  1.0
  O  O31  1  0.667  0.818  0.729  1.0
  O  O32  1  0.985  0.774  0.029  1.0
  O  O33  1  0.903  0.824  0.500  1.0
[/CIF]
.
The crystal structure described by Sr4Fe3O10 crystallizes in the triclinic P-1 space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 9-coordinate geometry to one O(1), one O(3), one O(4), one O(8), one O(9), two equivalent O(2), and two equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one O(3), one O(4), one O(6), one O(9), two equivalent O(5), and two equivalent O(7) atoms. In the third Sr site, Sr(3) is bonded in a 8-coordinate geometry to one O(3), one O(4), one O(6), one O(8), two equivalent O(10), and two equivalent O(7) atoms. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one O(1), one O(3), one O(4), one O(8), one O(9), two equivalent O(10), and two equivalent O(2) atoms. There are three inequivalent Fe sites. In the first Fe site, Fe(1) is bonded to one O(10), one O(2), one O(3), one O(5), one O(7), and one O(8) atom to form FeO6 octahedra that share corners with four equivalent Fe(2)O6 octahedra and  a cornercorner with one Fe(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 3-11°. In the second Fe site, Fe(2) is bonded to one O(10), one O(2), one O(4), one O(5), one O(7), and one O(9) atom to form FeO6 octahedra that share corners with four equivalent Fe(1)O6 octahedra and  a cornercorner with one Fe(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 3-11°. In the third Fe site, Fe(3) is bonded to one O(1), one O(8), one O(9), and two equivalent O(6) atoms to form FeO5 trigonal bipyramids that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one Fe(2)O6 octahedra, and  an edgeedge with one Fe(3)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 27°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one Sr(1), one Sr(4), and one Fe(3) atom. In the second O site, O(2) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(4), one Fe(1), and one Fe(2) atom. In the third O site, O(3) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), and one Fe(1) atom to form distorted OSr4Fe square pyramids that share corners with two equivalent O(10)Sr4Fe2 octahedra, corners with two equivalent O(5)Sr4Fe2 octahedra, corners with two equivalent O(6)Sr2Fe2 tetrahedra, edges with two equivalent O(4)Sr4Fe square pyramids,  a faceface with one O(10)Sr4Fe2 octahedra, and  a faceface with one O(5)Sr4Fe2 octahedra. The corner-sharing octahedral tilt angles range from 55-64°. In the fourth O site, O(4) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), and one Fe(2) atom to form distorted OSr4Fe square pyramids that share corners with two equivalent O(10)Sr4Fe2 octahedra, corners with two equivalent O(5)Sr4Fe2 octahedra, corners with two equivalent O(6)Sr2Fe2 tetrahedra, edges with two equivalent O(3)Sr4Fe square pyramids,  a faceface with one O(10)Sr4Fe2 octahedra, and  a faceface with one O(5)Sr4Fe2 octahedra. The corner-sharing octahedral tilt angles range from 50-59°. In the fifth O site, O(5) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Fe(1), and one Fe(2) atom to form distorted OSr4Fe2 octahedra that share corners with two equivalent O(10)Sr4Fe2 octahedra, corners with two equivalent O(3)Sr4Fe square pyramids, corners with two equivalent O(4)Sr4Fe square pyramids, corners with two equivalent O(6)Sr2Fe2 tetrahedra, edges with two equivalent O(5)Sr4Fe2 octahedra,  a faceface with one O(3)Sr4Fe square pyramid, and  a faceface with one O(4)Sr4Fe square pyramid. The corner-sharing octahedral tilt angles range from 1-5°. In the sixth O site, O(6) is bonded to one Sr(2), one Sr(3), and two equivalent Fe(3) atoms to form OSr2Fe2 tetrahedra that share corners with two equivalent O(10)Sr4Fe2 octahedra, corners with two equivalent O(5)Sr4Fe2 octahedra, corners with two equivalent O(3)Sr4Fe square pyramids, corners with two equivalent O(4)Sr4Fe square pyramids, and  an edgeedge with one O(6)Sr2Fe2 tetrahedra. The corner-sharing octahedral tilt angles range from 52-53°. In the seventh O site, O(7) is bonded in a 6-coordinate geometry to two equivalent Sr(2), two equivalent Sr(3), one Fe(1), and one Fe(2) atom. In the eighth O site, O(8) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(3), one Sr(4), one Fe(1), and one Fe(3) atom. In the ninth O site, O(9) is bonded in a 5-coordinate geometry to one Sr(1), one Sr(2), one Sr(4), one Fe(2), and one Fe(3) atom. In the tenth O site, O(10) is bonded to two equivalent Sr(3), two equivalent Sr(4), one Fe(1), and one Fe(2) atom to form distorted OSr4Fe2 octahedra that share corners with two equivalent O(5)Sr4Fe2 octahedra, corners with two equivalent O(3)Sr4Fe square pyramids, corners with two equivalent O(4)Sr4Fe square pyramids, corners with two equivalent O(6)Sr2Fe2 tetrahedra, edges with two equivalent O(10)Sr4Fe2 octahedra,  a faceface with one O(3)Sr4Fe square pyramid, and  a faceface with one O(4)Sr4Fe square pyramid. The corner-sharing octahedral tilt angles range from 1-5°. is represented by the CIF file [CIF]
data_Sr4Fe3O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.972
_cell_length_b   7.714
_cell_length_c   8.951
_cell_angle_alpha   90.432
_cell_angle_beta   71.276
_cell_angle_gamma   46.647
_symmetry_Int_Tables_number   1
_cell_volume   492.306
_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  0.136  0.108  0.233  1.0
  Sr  Sr1  1  0.156  0.585  0.222  1.0
  Sr  Sr2  1  0.622  0.133  0.223  1.0
  Sr  Sr3  1  0.344  0.415  0.778  1.0
  Sr  Sr4  1  0.630  0.627  0.234  1.0
  Sr  Sr5  1  0.364  0.892  0.767  1.0
  Sr  Sr6  1  0.870  0.373  0.766  1.0
  Sr  Sr7  1  0.878  0.867  0.777  1.0
  Fe  Fe8  1  0.994  0.007  0.010  1.0
  Fe  Fe9  1  0.506  0.993  0.990  1.0
  Fe  Fe10  1  0.499  0.502  0.001  1.0
  Fe  Fe11  1  0.774  0.175  0.501  1.0
  Fe  Fe12  1  0.001  0.498  0.999  1.0
  Fe  Fe13  1  0.726  0.825  0.499  1.0
  O  O14  1  0.960  0.125  0.501  1.0
  O  O15  1  0.996  0.246  0.011  1.0
  O  O16  1  0.378  0.126  0.224  1.0
  O  O17  1  0.104  0.402  0.767  1.0
  O  O18  1  0.253  0.747  0.014  1.0
  O  O19  1  0.247  0.253  0.986  1.0
  O  O20  1  0.396  0.598  0.233  1.0
  O  O21  1  0.122  0.874  0.776  1.0
  O  O22  1  0.597  0.176  0.500  1.0
  O  O23  1  0.504  0.754  0.989  1.0
  O  O24  1  0.515  0.226  0.971  1.0
  O  O25  1  0.833  0.182  0.271  1.0
  O  O26  1  0.604  0.408  0.724  1.0
  O  O27  1  0.540  0.875  0.499  1.0
  O  O28  1  0.755  0.744  0.017  1.0
  O  O29  1  0.745  0.256  0.983  1.0
  O  O30  1  0.896  0.592  0.276  1.0
  O  O31  1  0.667  0.818  0.729  1.0
  O  O32  1  0.985  0.774  0.029  1.0
  O  O33  1  0.903  0.824  0.500  1.0
[/CIF]
.