The structure described by Sr7Mn4O15 crystallizes in the monoclinic Pc space group. There are seven inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 10-coordinate geometry to one O(10), one O(11), one O(13), one O(15), one O(2), one O(3), one O(5), one O(6), one O(8), and one O(9) atom. In the second Sr site, Sr(2) is bonded in a 10-coordinate geometry to one O(1), one O(10), one O(12), one O(14), one O(15), one O(4), one O(5), one O(6), one O(7), and one O(9) atom. In the third Sr site, Sr(3) is bonded in a 8-coordinate geometry to one O(1), one O(13), one O(14), one O(3), one O(5), one O(7), and two equivalent O(9) atoms. In the fourth Sr site, Sr(4) is bonded in a 8-coordinate geometry to one O(13), one O(14), one O(2), one O(4), one O(6), one O(8), and two equivalent O(10) atoms. In the fifth Sr site, Sr(5) is bonded in a 10-coordinate geometry to one O(1), one O(11), one O(12), one O(13), one O(14), one O(2), one O(3), one O(4), one O(7), and one O(8) atom. In the sixth Sr site, Sr(6) is bonded in a 10-coordinate geometry to one O(1), one O(11), one O(12), one O(14), one O(15), one O(6), one O(7), one O(9), and two equivalent O(3) atoms. In the seventh Sr site, Sr(7) is bonded in a 10-coordinate geometry to one O(10), one O(11), one O(12), one O(13), one O(15), one O(2), one O(5), one O(8), and two equivalent O(4) atoms. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(11), one O(13), one O(5), one O(7), and one O(9) atom to form a mixture of face and corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 19°. In the second Mn site, Mn(2) is bonded to one O(10), one O(12), one O(14), one O(2), one O(6), and one O(8) atom to form a mixture of face and corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 17°. In the third Mn site, Mn(3) is bonded to one O(1), one O(11), one O(15), one O(3), one O(5), and one O(7) atom to form a mixture of face and corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 4-19°. In the fourth Mn site, Mn(4) is bonded to one O(12), one O(15), one O(2), one O(4), one O(6), and one O(8) atom to form a mixture of face and corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 4-17°. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Sr(2), one Sr(3), one Sr(5), one Sr(6), one Mn(1), and one Mn(3) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(4), one Sr(5), one Sr(7), one Mn(2), and one Mn(4) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(3), one Sr(5), two equivalent Sr(6), and one Mn(3) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(4), one Sr(5), two equivalent Sr(7), and one Mn(4) atom. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(7), one Mn(1), and one Mn(3) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(4), one Sr(6), one Mn(2), and one Mn(4) atom. In the seventh O site, O(7) is bonded to one Sr(2), one Sr(3), one Sr(5), one Sr(6), one Mn(1), and one Mn(3) atom to form a mixture of distorted face and corner-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 3-66°. In the eighth O site, O(8) is bonded to one Sr(1), one Sr(4), one Sr(5), one Sr(7), one Mn(2), and one Mn(4) atom to form a mixture of distorted face and corner-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 3-69°. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(6), two equivalent Sr(3), and one Mn(1) atom. In the tenth O site, O(10) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(7), two equivalent Sr(4), and one Mn(2) atom. In the eleventh O site, O(11) is bonded to one Sr(1), one Sr(5), one Sr(6), one Sr(7), one Mn(1), and one Mn(3) atom to form a mixture of distorted face and corner-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 1-66°. In the twelfth O site, O(12) is bonded to one Sr(2), one Sr(5), one Sr(6), one Sr(7), one Mn(2), and one Mn(4) atom to form a mixture of distorted face and corner-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 1-69°. In the thirteenth O site, O(13) is bonded in a 1-coordinate geometry to one Sr(1), one Sr(3), one Sr(4), one Sr(5), one Sr(7), and one Mn(1) atom. In the fourteenth O site, O(14) is bonded in a 1-coordinate geometry to one Sr(2), one Sr(3), one Sr(4), one Sr(5), one Sr(6), and one Mn(2) atom. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to one Sr(1), one Sr(2), one Sr(6), one Sr(7), one Mn(3), and one Mn(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr7Mn4O15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.770
_cell_length_b   6.894
_cell_length_c   10.589
_cell_angle_alpha   88.400
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   713.013
_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  0.749  0.821  0.334  1.0
  Sr  Sr1  1  0.252  0.178  0.168  1.0
  Sr  Sr2  1  0.748  0.178  0.668  1.0
  Sr  Sr3  1  0.251  0.821  0.834  1.0
  Sr  Sr4  1  0.937  0.001  0.964  1.0
  Sr  Sr5  1  0.435  0.998  0.536  1.0
  Sr  Sr6  1  0.565  0.998  0.036  1.0
  Sr  Sr7  1  0.063  0.001  0.464  1.0
  Sr  Sr8  1  0.756  0.501  0.005  1.0
  Sr  Sr9  1  0.244  0.501  0.505  1.0
  Sr  Sr10  1  0.899  0.648  0.696  1.0
  Sr  Sr11  1  0.402  0.352  0.804  1.0
  Sr  Sr12  1  0.598  0.352  0.304  1.0
  Sr  Sr13  1  0.101  0.648  0.196  1.0
  Mn  Mn14  1  0.920  0.219  0.219  1.0
  Mn  Mn15  1  0.417  0.779  0.280  1.0
  Mn  Mn16  1  0.583  0.779  0.780  1.0
  Mn  Mn17  1  0.080  0.219  0.719  1.0
  Mn  Mn18  1  0.917  0.424  0.424  1.0
  Mn  Mn19  1  0.418  0.576  0.074  1.0
  Mn  Mn20  1  0.582  0.576  0.574  1.0
  Mn  Mn21  1  0.083  0.424  0.924  1.0
  O  O22  1  0.970  0.317  0.583  1.0
  O  O23  1  0.475  0.684  0.916  1.0
  O  O24  1  0.525  0.684  0.416  1.0
  O  O25  1  0.030  0.317  0.083  1.0
  O  O26  1  0.996  0.663  0.453  1.0
  O  O27  1  0.497  0.336  0.047  1.0
  O  O28  1  0.503  0.336  0.547  1.0
  O  O29  1  0.004  0.663  0.953  1.0
  O  O30  1  0.833  0.160  0.381  1.0
  O  O31  1  0.332  0.840  0.116  1.0
  O  O32  1  0.668  0.840  0.616  1.0
  O  O33  1  0.167  0.160  0.881  1.0
  O  O34  1  0.925  0.321  0.837  1.0
  O  O35  1  0.425  0.679  0.663  1.0
  O  O36  1  0.575  0.679  0.163  1.0
  O  O37  1  0.075  0.321  0.337  1.0
  O  O38  1  0.000  0.974  0.208  1.0
  O  O39  1  0.498  0.026  0.291  1.0
  O  O40  1  0.502  0.026  0.791  1.0
  O  O41  1  1.000  0.974  0.708  1.0
  O  O42  1  0.851  0.492  0.252  1.0
  O  O43  1  0.348  0.507  0.243  1.0
  O  O44  1  0.652  0.507  0.743  1.0
  O  O45  1  0.149  0.492  0.752  1.0
  O  O46  1  0.770  0.158  0.120  1.0
  O  O47  1  0.267  0.839  0.379  1.0
  O  O48  1  0.733  0.839  0.879  1.0
  O  O49  1  0.230  0.158  0.620  1.0
  O  O50  1  0.747  0.504  0.494  1.0
  O  O51  1  0.253  0.504  0.994  1.0
[/CIF]
.
The structure described by Sr7Mn4O15 crystallizes in the monoclinic Pc space group. There are seven inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 10-coordinate geometry to one O(10), one O(11), one O(13), one O(15), one O(2), one O(3), one O(5), one O(6), one O(8), and one O(9) atom. In the second Sr site, Sr(2) is bonded in a 10-coordinate geometry to one O(1), one O(10), one O(12), one O(14), one O(15), one O(4), one O(5), one O(6), one O(7), and one O(9) atom. In the third Sr site, Sr(3) is bonded in a 8-coordinate geometry to one O(1), one O(13), one O(14), one O(3), one O(5), one O(7), and two equivalent O(9) atoms. In the fourth Sr site, Sr(4) is bonded in a 8-coordinate geometry to one O(13), one O(14), one O(2), one O(4), one O(6), one O(8), and two equivalent O(10) atoms. In the fifth Sr site, Sr(5) is bonded in a 10-coordinate geometry to one O(1), one O(11), one O(12), one O(13), one O(14), one O(2), one O(3), one O(4), one O(7), and one O(8) atom. In the sixth Sr site, Sr(6) is bonded in a 10-coordinate geometry to one O(1), one O(11), one O(12), one O(14), one O(15), one O(6), one O(7), one O(9), and two equivalent O(3) atoms. In the seventh Sr site, Sr(7) is bonded in a 10-coordinate geometry to one O(10), one O(11), one O(12), one O(13), one O(15), one O(2), one O(5), one O(8), and two equivalent O(4) atoms. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(11), one O(13), one O(5), one O(7), and one O(9) atom to form a mixture of face and corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 19°. In the second Mn site, Mn(2) is bonded to one O(10), one O(12), one O(14), one O(2), one O(6), and one O(8) atom to form a mixture of face and corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 17°. In the third Mn site, Mn(3) is bonded to one O(1), one O(11), one O(15), one O(3), one O(5), and one O(7) atom to form a mixture of face and corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 4-19°. In the fourth Mn site, Mn(4) is bonded to one O(12), one O(15), one O(2), one O(4), one O(6), and one O(8) atom to form a mixture of face and corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 4-17°. There are fifteen inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Sr(2), one Sr(3), one Sr(5), one Sr(6), one Mn(1), and one Mn(3) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Sr(1), one Sr(4), one Sr(5), one Sr(7), one Mn(2), and one Mn(4) atom. In the third O site, O(3) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(3), one Sr(5), two equivalent Sr(6), and one Mn(3) atom. In the fourth O site, O(4) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(4), one Sr(5), two equivalent Sr(7), and one Mn(4) atom. In the fifth O site, O(5) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(3), one Sr(7), one Mn(1), and one Mn(3) atom. In the sixth O site, O(6) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(4), one Sr(6), one Mn(2), and one Mn(4) atom. In the seventh O site, O(7) is bonded to one Sr(2), one Sr(3), one Sr(5), one Sr(6), one Mn(1), and one Mn(3) atom to form a mixture of distorted face and corner-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 3-66°. In the eighth O site, O(8) is bonded to one Sr(1), one Sr(4), one Sr(5), one Sr(7), one Mn(2), and one Mn(4) atom to form a mixture of distorted face and corner-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 3-69°. In the ninth O site, O(9) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(6), two equivalent Sr(3), and one Mn(1) atom. In the tenth O site, O(10) is bonded in a 6-coordinate geometry to one Sr(1), one Sr(2), one Sr(7), two equivalent Sr(4), and one Mn(2) atom. In the eleventh O site, O(11) is bonded to one Sr(1), one Sr(5), one Sr(6), one Sr(7), one Mn(1), and one Mn(3) atom to form a mixture of distorted face and corner-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 1-66°. In the twelfth O site, O(12) is bonded to one Sr(2), one Sr(5), one Sr(6), one Sr(7), one Mn(2), and one Mn(4) atom to form a mixture of distorted face and corner-sharing OSr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 1-69°. In the thirteenth O site, O(13) is bonded in a 1-coordinate geometry to one Sr(1), one Sr(3), one Sr(4), one Sr(5), one Sr(7), and one Mn(1) atom. In the fourteenth O site, O(14) is bonded in a 1-coordinate geometry to one Sr(2), one Sr(3), one Sr(4), one Sr(5), one Sr(6), and one Mn(2) atom. In the fifteenth O site, O(15) is bonded in a distorted linear geometry to one Sr(1), one Sr(2), one Sr(6), one Sr(7), one Mn(3), and one Mn(4) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr7Mn4O15
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.770
_cell_length_b   6.894
_cell_length_c   10.589
_cell_angle_alpha   88.400
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   713.013
_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  0.749  0.821  0.334  1.0
  Sr  Sr1  1  0.252  0.178  0.168  1.0
  Sr  Sr2  1  0.748  0.178  0.668  1.0
  Sr  Sr3  1  0.251  0.821  0.834  1.0
  Sr  Sr4  1  0.937  0.001  0.964  1.0
  Sr  Sr5  1  0.435  0.998  0.536  1.0
  Sr  Sr6  1  0.565  0.998  0.036  1.0
  Sr  Sr7  1  0.063  0.001  0.464  1.0
  Sr  Sr8  1  0.756  0.501  0.005  1.0
  Sr  Sr9  1  0.244  0.501  0.505  1.0
  Sr  Sr10  1  0.899  0.648  0.696  1.0
  Sr  Sr11  1  0.402  0.352  0.804  1.0
  Sr  Sr12  1  0.598  0.352  0.304  1.0
  Sr  Sr13  1  0.101  0.648  0.196  1.0
  Mn  Mn14  1  0.920  0.219  0.219  1.0
  Mn  Mn15  1  0.417  0.779  0.280  1.0
  Mn  Mn16  1  0.583  0.779  0.780  1.0
  Mn  Mn17  1  0.080  0.219  0.719  1.0
  Mn  Mn18  1  0.917  0.424  0.424  1.0
  Mn  Mn19  1  0.418  0.576  0.074  1.0
  Mn  Mn20  1  0.582  0.576  0.574  1.0
  Mn  Mn21  1  0.083  0.424  0.924  1.0
  O  O22  1  0.970  0.317  0.583  1.0
  O  O23  1  0.475  0.684  0.916  1.0
  O  O24  1  0.525  0.684  0.416  1.0
  O  O25  1  0.030  0.317  0.083  1.0
  O  O26  1  0.996  0.663  0.453  1.0
  O  O27  1  0.497  0.336  0.047  1.0
  O  O28  1  0.503  0.336  0.547  1.0
  O  O29  1  0.004  0.663  0.953  1.0
  O  O30  1  0.833  0.160  0.381  1.0
  O  O31  1  0.332  0.840  0.116  1.0
  O  O32  1  0.668  0.840  0.616  1.0
  O  O33  1  0.167  0.160  0.881  1.0
  O  O34  1  0.925  0.321  0.837  1.0
  O  O35  1  0.425  0.679  0.663  1.0
  O  O36  1  0.575  0.679  0.163  1.0
  O  O37  1  0.075  0.321  0.337  1.0
  O  O38  1  0.000  0.974  0.208  1.0
  O  O39  1  0.498  0.026  0.291  1.0
  O  O40  1  0.502  0.026  0.791  1.0
  O  O41  1  1.000  0.974  0.708  1.0
  O  O42  1  0.851  0.492  0.252  1.0
  O  O43  1  0.348  0.507  0.243  1.0
  O  O44  1  0.652  0.507  0.743  1.0
  O  O45  1  0.149  0.492  0.752  1.0
  O  O46  1  0.770  0.158  0.120  1.0
  O  O47  1  0.267  0.839  0.379  1.0
  O  O48  1  0.733  0.839  0.879  1.0
  O  O49  1  0.230  0.158  0.620  1.0
  O  O50  1  0.747  0.504  0.494  1.0
  O  O51  1  0.253  0.504  0.994  1.0
[/CIF]
.