The crystal structure described by Sr7Mn4O15 crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 10-coordinate geometry to one O(2), one O(3), one O(4), one O(6), one O(7), one O(8), two equivalent O(1), and two equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a 10-coordinate geometry to two equivalent O(2), two equivalent O(4), two equivalent O(6), two equivalent O(7), and two equivalent O(8) atoms. In the third Sr site, Sr(3) is bonded in a 10-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(8), two equivalent O(6), and two equivalent O(7) atoms. In the fourth Sr site, Sr(4) is bonded in a 8-coordinate geometry to one O(4), one O(5), one O(6), one O(8), two equivalent O(1), and two equivalent O(2) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), one O(4), one O(5), one O(7), and one O(8) atom to form a mixture of face and corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 15°. In the second Mn site, Mn(2) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form a mixture of face and corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 0-15°. There are eight inequivalent O sites. In the first O site, O(4) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mn(1), and one Mn(2) atom. In the second O site, O(5) is bonded in a 6-coordinate geometry to one Sr(3), one Sr(4), two equivalent Sr(1), one Mn(1), and one Mn(2) atom. In the third O site, O(6) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(4), two equivalent Sr(3), and one Mn(2) atom. In the fourth O site, O(7) is bonded to one Sr(1), one Sr(2), two equivalent Sr(3), one Mn(1), and one Mn(2) atom to form a mixture of distorted face and corner-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-68°. In the fifth O site, O(8) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mn(1), and one Mn(2) atom to form a mixture of distorted face and corner-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-68°. In the sixth O site, O(1) is bonded in a 6-coordinate geometry to one Sr(3), two equivalent Sr(1), two equivalent Sr(4), and one Mn(1) atom. In the seventh O site, O(2) is bonded in a 1-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), two equivalent Sr(4), and one Mn(1) atom. In the eighth O site, O(3) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(3), and two equivalent Mn(2) atoms. is represented by the CIF card [CIF]
data_Sr7Mn4O15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.634
_cell_length_b   6.827
_cell_length_c   10.351
_cell_angle_alpha   88.063
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   680.339
_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  0.503  0.822  0.333  1.0
  Sr  Sr1  1  0.003  0.178  0.167  1.0
  Sr  Sr2  1  0.497  0.178  0.667  1.0
  Sr  Sr3  1  0.997  0.822  0.833  1.0
  Sr  Sr4  1  0.500  0.500  0.000  1.0
  Sr  Sr5  1  0.000  0.500  0.500  1.0
  Sr  Sr6  1  0.649  0.649  0.696  1.0
  Sr  Sr7  1  0.149  0.351  0.804  1.0
  Sr  Sr8  1  0.351  0.351  0.304  1.0
  Sr  Sr9  1  0.851  0.649  0.196  1.0
  Sr  Sr10  1  0.686  0.002  0.965  1.0
  Sr  Sr11  1  0.186  0.998  0.535  1.0
  Sr  Sr12  1  0.314  0.998  0.035  1.0
  Sr  Sr13  1  0.814  0.002  0.465  1.0
  Mn  Mn14  1  0.669  0.222  0.221  1.0
  Mn  Mn15  1  0.169  0.778  0.279  1.0
  Mn  Mn16  1  0.331  0.778  0.779  1.0
  Mn  Mn17  1  0.831  0.222  0.721  1.0
  Mn  Mn18  1  0.667  0.424  0.425  1.0
  Mn  Mn19  1  0.167  0.576  0.075  1.0
  Mn  Mn20  1  0.333  0.576  0.575  1.0
  Mn  Mn21  1  0.833  0.424  0.925  1.0
  O  O22  1  0.747  0.976  0.213  1.0
  O  O23  1  0.247  0.024  0.287  1.0
  O  O24  1  0.253  0.024  0.787  1.0
  O  O25  1  0.753  0.976  0.713  1.0
  O  O26  1  0.518  0.160  0.125  1.0
  O  O27  1  0.018  0.840  0.375  1.0
  O  O28  1  0.482  0.840  0.875  1.0
  O  O29  1  0.982  0.160  0.625  1.0
  O  O30  1  0.500  0.500  0.500  1.0
  O  O31  1  0.000  0.500  0.000  1.0
  O  O32  1  0.726  0.317  0.582  1.0
  O  O33  1  0.226  0.683  0.918  1.0
  O  O34  1  0.274  0.683  0.418  1.0
  O  O35  1  0.774  0.317  0.082  1.0
  O  O36  1  0.582  0.163  0.385  1.0
  O  O37  1  0.082  0.837  0.115  1.0
  O  O38  1  0.418  0.837  0.615  1.0
  O  O39  1  0.918  0.163  0.885  1.0
  O  O40  1  0.745  0.663  0.451  1.0
  O  O41  1  0.245  0.337  0.049  1.0
  O  O42  1  0.255  0.337  0.549  1.0
  O  O43  1  0.755  0.663  0.951  1.0
  O  O44  1  0.899  0.493  0.753  1.0
  O  O45  1  0.399  0.507  0.747  1.0
  O  O46  1  0.101  0.507  0.247  1.0
  O  O47  1  0.601  0.493  0.253  1.0
  O  O48  1  0.826  0.321  0.337  1.0
  O  O49  1  0.326  0.679  0.163  1.0
  O  O50  1  0.174  0.679  0.663  1.0
  O  O51  1  0.674  0.321  0.837  1.0
[/CIF]
.
The crystal structure described by Sr7Mn4O15 crystallizes in the monoclinic P2_1/c space group. There are four inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 10-coordinate geometry to one O(2), one O(3), one O(4), one O(6), one O(7), one O(8), two equivalent O(1), and two equivalent O(5) atoms. In the second Sr site, Sr(2) is bonded in a 10-coordinate geometry to two equivalent O(2), two equivalent O(4), two equivalent O(6), two equivalent O(7), and two equivalent O(8) atoms. In the third Sr site, Sr(3) is bonded in a 10-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(8), two equivalent O(6), and two equivalent O(7) atoms. In the fourth Sr site, Sr(4) is bonded in a 8-coordinate geometry to one O(4), one O(5), one O(6), one O(8), two equivalent O(1), and two equivalent O(2) atoms. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), one O(4), one O(5), one O(7), and one O(8) atom to form a mixture of face and corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 15°. In the second Mn site, Mn(2) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form a mixture of face and corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 0-15°. There are eight inequivalent O sites. In the first O site, O(4) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mn(1), and one Mn(2) atom. In the second O site, O(5) is bonded in a 6-coordinate geometry to one Sr(3), one Sr(4), two equivalent Sr(1), one Mn(1), and one Mn(2) atom. In the third O site, O(6) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(4), two equivalent Sr(3), and one Mn(2) atom. In the fourth O site, O(7) is bonded to one Sr(1), one Sr(2), two equivalent Sr(3), one Mn(1), and one Mn(2) atom to form a mixture of distorted face and corner-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-68°. In the fifth O site, O(8) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mn(1), and one Mn(2) atom to form a mixture of distorted face and corner-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-68°. In the sixth O site, O(1) is bonded in a 6-coordinate geometry to one Sr(3), two equivalent Sr(1), two equivalent Sr(4), and one Mn(1) atom. In the seventh O site, O(2) is bonded in a 1-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), two equivalent Sr(4), and one Mn(1) atom. In the eighth O site, O(3) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(3), and two equivalent Mn(2) atoms. is represented by the CIF card [CIF]
data_Sr7Mn4O15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.634
_cell_length_b   6.827
_cell_length_c   10.351
_cell_angle_alpha   88.063
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   680.339
_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  0.503  0.822  0.333  1.0
  Sr  Sr1  1  0.003  0.178  0.167  1.0
  Sr  Sr2  1  0.497  0.178  0.667  1.0
  Sr  Sr3  1  0.997  0.822  0.833  1.0
  Sr  Sr4  1  0.500  0.500  0.000  1.0
  Sr  Sr5  1  0.000  0.500  0.500  1.0
  Sr  Sr6  1  0.649  0.649  0.696  1.0
  Sr  Sr7  1  0.149  0.351  0.804  1.0
  Sr  Sr8  1  0.351  0.351  0.304  1.0
  Sr  Sr9  1  0.851  0.649  0.196  1.0
  Sr  Sr10  1  0.686  0.002  0.965  1.0
  Sr  Sr11  1  0.186  0.998  0.535  1.0
  Sr  Sr12  1  0.314  0.998  0.035  1.0
  Sr  Sr13  1  0.814  0.002  0.465  1.0
  Mn  Mn14  1  0.669  0.222  0.221  1.0
  Mn  Mn15  1  0.169  0.778  0.279  1.0
  Mn  Mn16  1  0.331  0.778  0.779  1.0
  Mn  Mn17  1  0.831  0.222  0.721  1.0
  Mn  Mn18  1  0.667  0.424  0.425  1.0
  Mn  Mn19  1  0.167  0.576  0.075  1.0
  Mn  Mn20  1  0.333  0.576  0.575  1.0
  Mn  Mn21  1  0.833  0.424  0.925  1.0
  O  O22  1  0.747  0.976  0.213  1.0
  O  O23  1  0.247  0.024  0.287  1.0
  O  O24  1  0.253  0.024  0.787  1.0
  O  O25  1  0.753  0.976  0.713  1.0
  O  O26  1  0.518  0.160  0.125  1.0
  O  O27  1  0.018  0.840  0.375  1.0
  O  O28  1  0.482  0.840  0.875  1.0
  O  O29  1  0.982  0.160  0.625  1.0
  O  O30  1  0.500  0.500  0.500  1.0
  O  O31  1  0.000  0.500  0.000  1.0
  O  O32  1  0.726  0.317  0.582  1.0
  O  O33  1  0.226  0.683  0.918  1.0
  O  O34  1  0.274  0.683  0.418  1.0
  O  O35  1  0.774  0.317  0.082  1.0
  O  O36  1  0.582  0.163  0.385  1.0
  O  O37  1  0.082  0.837  0.115  1.0
  O  O38  1  0.418  0.837  0.615  1.0
  O  O39  1  0.918  0.163  0.885  1.0
  O  O40  1  0.745  0.663  0.451  1.0
  O  O41  1  0.245  0.337  0.049  1.0
  O  O42  1  0.255  0.337  0.549  1.0
  O  O43  1  0.755  0.663  0.951  1.0
  O  O44  1  0.899  0.493  0.753  1.0
  O  O45  1  0.399  0.507  0.747  1.0
  O  O46  1  0.101  0.507  0.247  1.0
  O  O47  1  0.601  0.493  0.253  1.0
  O  O48  1  0.826  0.321  0.337  1.0
  O  O49  1  0.326  0.679  0.163  1.0
  O  O50  1  0.174  0.679  0.663  1.0
  O  O51  1  0.674  0.321  0.837  1.0
[/CIF]
.