The crystal structure described by Sr6Mn3FeO14 crystallizes in the orthorhombic Amm2 space group. There are six inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to two equivalent O(5), two equivalent O(6), four equivalent O(7), and four equivalent O(8) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, faces with four equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Mn(1)O6 octahedra, faces with two equivalent Mn(2)O6 octahedra, faces with two equivalent Mn(3)O6 octahedra, and faces with two equivalent Fe(1)O6 octahedra. In the second Sr site, Sr(2) is bonded to two equivalent O(5), two equivalent O(6), four equivalent O(7), and four equivalent O(8) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(2)O12 cuboctahedra, faces with four equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Mn(1)O6 octahedra, faces with two equivalent Mn(2)O6 octahedra, faces with two equivalent Mn(3)O6 octahedra, and faces with two equivalent Fe(1)O6 octahedra. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and four equivalent O(7) atoms. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and four equivalent O(7) atoms. In the fifth Sr site, Sr(5) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(3), two equivalent O(4), and four equivalent O(8) atoms. In the sixth Sr site, Sr(6) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(8) atoms. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(6), and four equivalent O(7) atoms to form MnO6 octahedra that share  a cornercorner with one Mn(2)O6 octahedra, corners with four equivalent Fe(1)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Sr(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(4), one O(6), and four equivalent O(8) atoms to form MnO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with four equivalent Mn(3)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the third Mn site, Mn(3) is bonded to one O(3), one O(5), and four equivalent O(8) atoms to form MnO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. Fe(1) is bonded to one O(2), one O(5), and four equivalent O(7) atoms to form FeO6 octahedra that share  a cornercorner with one Mn(3)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Sr(5), two equivalent Sr(3), two equivalent Sr(4), and one Mn(1) atom to form distorted OSr5Mn octahedra that share corners with four equivalent O(8)Sr4Mn2 octahedra, corners with four equivalent O(1)Sr5Mn octahedra, corners with eight equivalent O(7)Sr4MnFe octahedra, edges with two equivalent O(3)Sr5Mn octahedra, edges with two equivalent O(4)Sr5Mn octahedra, edges with four equivalent O(2)Sr5Fe octahedra, and faces with four equivalent O(7)Sr4MnFe octahedra. The corner-sharing octahedral tilt angles range from 9-55°. In the second O site, O(2) is bonded to one Sr(6), two equivalent Sr(3), two equivalent Sr(4), and one Fe(1) atom to form distorted OSr5Fe octahedra that share  a cornercorner with one O(5)Sr4MnFe octahedra, corners with four equivalent O(8)Sr4Mn2 octahedra, corners with four equivalent O(2)Sr5Fe octahedra, corners with eight equivalent O(7)Sr4MnFe octahedra, edges with two equivalent O(3)Sr5Mn octahedra, edges with two equivalent O(4)Sr5Mn octahedra, edges with four equivalent O(1)Sr5Mn octahedra, and faces with four equivalent O(7)Sr4MnFe octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the third O site, O(3) is bonded to one Sr(3), two equivalent Sr(5), two equivalent Sr(6), and one Mn(3) atom to form distorted OSr5Mn octahedra that share  a cornercorner with one O(5)Sr4MnFe octahedra, corners with four equivalent O(7)Sr4MnFe octahedra, corners with four equivalent O(3)Sr5Mn octahedra, corners with eight equivalent O(8)Sr4Mn2 octahedra, edges with two equivalent O(2)Sr5Fe octahedra, edges with two equivalent O(1)Sr5Mn octahedra, edges with four equivalent O(4)Sr5Mn octahedra, and faces with four equivalent O(8)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the fourth O site, O(4) is bonded to one Sr(4), two equivalent Sr(5), two equivalent Sr(6), and one Mn(2) atom to form distorted OSr5Mn octahedra that share corners with four equivalent O(7)Sr4MnFe octahedra, corners with four equivalent O(4)Sr5Mn octahedra, corners with eight equivalent O(8)Sr4Mn2 octahedra, edges with two equivalent O(2)Sr5Fe octahedra, edges with two equivalent O(1)Sr5Mn octahedra, edges with four equivalent O(3)Sr5Mn octahedra, and faces with four equivalent O(8)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 8-55°. In the fifth O site, O(5) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Mn(3), and one Fe(1) atom to form distorted OSr4MnFe octahedra that share  a cornercorner with one O(2)Sr5Fe octahedra,  a cornercorner with one O(3)Sr5Mn octahedra, corners with four equivalent O(5)Sr4MnFe octahedra, corners with eight equivalent O(8)Sr4Mn2 octahedra, corners with eight equivalent O(7)Sr4MnFe octahedra, faces with four equivalent O(8)Sr4Mn2 octahedra, and faces with four equivalent O(7)Sr4MnFe octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the sixth O site, O(6) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(2), one Mn(1), and one Mn(2) atom. In the seventh O site, O(7) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mn(1), and one Fe(1) atom to form distorted OSr4MnFe octahedra that share  a cornercorner with one O(3)Sr5Mn octahedra,  a cornercorner with one O(4)Sr5Mn octahedra, corners with two equivalent O(5)Sr4MnFe octahedra, corners with two equivalent O(7)Sr4MnFe octahedra, corners with two equivalent O(2)Sr5Fe octahedra, corners with two equivalent O(1)Sr5Mn octahedra, corners with six equivalent O(8)Sr4Mn2 octahedra,  an edgeedge with one O(8)Sr4Mn2 octahedra, edges with two equivalent O(7)Sr4MnFe octahedra,  a faceface with one O(5)Sr4MnFe octahedra,  a faceface with one O(2)Sr5Fe octahedra,  a faceface with one O(1)Sr5Mn octahedra, and faces with four equivalent O(7)Sr4MnFe octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the eighth O site, O(8) is bonded to one Sr(1), one Sr(2), one Sr(5), one Sr(6), one Mn(2), and one Mn(3) atom to form distorted OSr4Mn2 octahedra that share  a cornercorner with one O(2)Sr5Fe octahedra,  a cornercorner with one O(1)Sr5Mn octahedra, corners with two equivalent O(8)Sr4Mn2 octahedra, corners with two equivalent O(5)Sr4MnFe octahedra, corners with two equivalent O(3)Sr5Mn octahedra, corners with two equivalent O(4)Sr5Mn octahedra, corners with six equivalent O(7)Sr4MnFe octahedra,  an edgeedge with one O(7)Sr4MnFe octahedra, edges with two equivalent O(8)Sr4Mn2 octahedra,  a faceface with one O(5)Sr4MnFe octahedra,  a faceface with one O(3)Sr5Mn octahedra,  a faceface with one O(4)Sr5Mn octahedra, and faces with four equivalent O(8)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. is represented by the CIF file [CIF]
data_Sr6Mn3FeO14
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.506
_cell_length_b   10.506
_cell_length_c   5.510
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   149.576
_symmetry_Int_Tables_number   1
_cell_volume   308.011
_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  0.500  0.500  0.000  1.0
  Sr  Sr1  1  1.000  0.000  0.500  1.0
  Sr  Sr2  1  0.817  0.183  0.500  1.0
  Sr  Sr3  1  0.317  0.683  0.000  1.0
  Sr  Sr4  1  0.683  0.317  0.000  1.0
  Sr  Sr5  1  0.183  0.817  0.500  1.0
  Mn  Mn6  1  0.903  0.097  0.000  1.0
  Mn  Mn7  1  0.097  0.903  0.000  1.0
  Mn  Mn8  1  0.598  0.402  0.500  1.0
  Fe  Fe9  1  0.403  0.597  0.500  1.0
  O  O10  1  0.806  0.194  0.000  1.0
  O  O11  1  0.306  0.694  0.500  1.0
  O  O12  1  0.693  0.307  0.500  1.0
  O  O13  1  0.193  0.807  0.000  1.0
  O  O14  1  0.501  0.499  0.500  1.0
  O  O15  1  0.001  0.999  0.000  1.0
  O  O16  1  0.656  0.848  0.752  1.0
  O  O17  1  0.152  0.344  0.248  1.0
  O  O18  1  0.152  0.344  0.752  1.0
  O  O19  1  0.656  0.848  0.248  1.0
  O  O20  1  0.846  0.654  0.750  1.0
  O  O21  1  0.346  0.154  0.250  1.0
  O  O22  1  0.346  0.154  0.750  1.0
  O  O23  1  0.846  0.654  0.250  1.0
[/CIF]
.
The crystal structure described by Sr6Mn3FeO14 crystallizes in the orthorhombic Amm2 space group. There are six inequivalent Sr sites. In the first Sr site, Sr(1) is bonded to two equivalent O(5), two equivalent O(6), four equivalent O(7), and four equivalent O(8) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(1)O12 cuboctahedra, faces with four equivalent Sr(2)O12 cuboctahedra, faces with two equivalent Mn(1)O6 octahedra, faces with two equivalent Mn(2)O6 octahedra, faces with two equivalent Mn(3)O6 octahedra, and faces with two equivalent Fe(1)O6 octahedra. In the second Sr site, Sr(2) is bonded to two equivalent O(5), two equivalent O(6), four equivalent O(7), and four equivalent O(8) atoms to form SrO12 cuboctahedra that share corners with four equivalent Sr(2)O12 cuboctahedra, faces with four equivalent Sr(1)O12 cuboctahedra, faces with two equivalent Mn(1)O6 octahedra, faces with two equivalent Mn(2)O6 octahedra, faces with two equivalent Mn(3)O6 octahedra, and faces with two equivalent Fe(1)O6 octahedra. In the third Sr site, Sr(3) is bonded in a 9-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and four equivalent O(7) atoms. In the fourth Sr site, Sr(4) is bonded in a 9-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and four equivalent O(7) atoms. In the fifth Sr site, Sr(5) is bonded in a 9-coordinate geometry to one O(1), two equivalent O(3), two equivalent O(4), and four equivalent O(8) atoms. In the sixth Sr site, Sr(6) is bonded in a 9-coordinate geometry to one O(2), two equivalent O(3), two equivalent O(4), and four equivalent O(8) atoms. There are three inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(6), and four equivalent O(7) atoms to form MnO6 octahedra that share  a cornercorner with one Mn(2)O6 octahedra, corners with four equivalent Fe(1)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Sr(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(4), one O(6), and four equivalent O(8) atoms to form MnO6 octahedra that share  a cornercorner with one Mn(1)O6 octahedra, corners with four equivalent Mn(3)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. In the third Mn site, Mn(3) is bonded to one O(3), one O(5), and four equivalent O(8) atoms to form MnO6 octahedra that share  a cornercorner with one Fe(1)O6 octahedra, corners with four equivalent Mn(2)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. Fe(1) is bonded to one O(2), one O(5), and four equivalent O(7) atoms to form FeO6 octahedra that share  a cornercorner with one Mn(3)O6 octahedra, corners with four equivalent Mn(1)O6 octahedra, faces with two equivalent Sr(1)O12 cuboctahedra, and faces with two equivalent Sr(2)O12 cuboctahedra. The corner-sharing octahedral tilt angles range from 0-2°. There are eight inequivalent O sites. In the first O site, O(1) is bonded to one Sr(5), two equivalent Sr(3), two equivalent Sr(4), and one Mn(1) atom to form distorted OSr5Mn octahedra that share corners with four equivalent O(8)Sr4Mn2 octahedra, corners with four equivalent O(1)Sr5Mn octahedra, corners with eight equivalent O(7)Sr4MnFe octahedra, edges with two equivalent O(3)Sr5Mn octahedra, edges with two equivalent O(4)Sr5Mn octahedra, edges with four equivalent O(2)Sr5Fe octahedra, and faces with four equivalent O(7)Sr4MnFe octahedra. The corner-sharing octahedral tilt angles range from 9-55°. In the second O site, O(2) is bonded to one Sr(6), two equivalent Sr(3), two equivalent Sr(4), and one Fe(1) atom to form distorted OSr5Fe octahedra that share  a cornercorner with one O(5)Sr4MnFe octahedra, corners with four equivalent O(8)Sr4Mn2 octahedra, corners with four equivalent O(2)Sr5Fe octahedra, corners with eight equivalent O(7)Sr4MnFe octahedra, edges with two equivalent O(3)Sr5Mn octahedra, edges with two equivalent O(4)Sr5Mn octahedra, edges with four equivalent O(1)Sr5Mn octahedra, and faces with four equivalent O(7)Sr4MnFe octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the third O site, O(3) is bonded to one Sr(3), two equivalent Sr(5), two equivalent Sr(6), and one Mn(3) atom to form distorted OSr5Mn octahedra that share  a cornercorner with one O(5)Sr4MnFe octahedra, corners with four equivalent O(7)Sr4MnFe octahedra, corners with four equivalent O(3)Sr5Mn octahedra, corners with eight equivalent O(8)Sr4Mn2 octahedra, edges with two equivalent O(2)Sr5Fe octahedra, edges with two equivalent O(1)Sr5Mn octahedra, edges with four equivalent O(4)Sr5Mn octahedra, and faces with four equivalent O(8)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-55°. In the fourth O site, O(4) is bonded to one Sr(4), two equivalent Sr(5), two equivalent Sr(6), and one Mn(2) atom to form distorted OSr5Mn octahedra that share corners with four equivalent O(7)Sr4MnFe octahedra, corners with four equivalent O(4)Sr5Mn octahedra, corners with eight equivalent O(8)Sr4Mn2 octahedra, edges with two equivalent O(2)Sr5Fe octahedra, edges with two equivalent O(1)Sr5Mn octahedra, edges with four equivalent O(3)Sr5Mn octahedra, and faces with four equivalent O(8)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 8-55°. In the fifth O site, O(5) is bonded to two equivalent Sr(1), two equivalent Sr(2), one Mn(3), and one Fe(1) atom to form distorted OSr4MnFe octahedra that share  a cornercorner with one O(2)Sr5Fe octahedra,  a cornercorner with one O(3)Sr5Mn octahedra, corners with four equivalent O(5)Sr4MnFe octahedra, corners with eight equivalent O(8)Sr4Mn2 octahedra, corners with eight equivalent O(7)Sr4MnFe octahedra, faces with four equivalent O(8)Sr4Mn2 octahedra, and faces with four equivalent O(7)Sr4MnFe octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the sixth O site, O(6) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Sr(2), one Mn(1), and one Mn(2) atom. In the seventh O site, O(7) is bonded to one Sr(1), one Sr(2), one Sr(3), one Sr(4), one Mn(1), and one Fe(1) atom to form distorted OSr4MnFe octahedra that share  a cornercorner with one O(3)Sr5Mn octahedra,  a cornercorner with one O(4)Sr5Mn octahedra, corners with two equivalent O(5)Sr4MnFe octahedra, corners with two equivalent O(7)Sr4MnFe octahedra, corners with two equivalent O(2)Sr5Fe octahedra, corners with two equivalent O(1)Sr5Mn octahedra, corners with six equivalent O(8)Sr4Mn2 octahedra,  an edgeedge with one O(8)Sr4Mn2 octahedra, edges with two equivalent O(7)Sr4MnFe octahedra,  a faceface with one O(5)Sr4MnFe octahedra,  a faceface with one O(2)Sr5Fe octahedra,  a faceface with one O(1)Sr5Mn octahedra, and faces with four equivalent O(7)Sr4MnFe octahedra. The corner-sharing octahedral tilt angles range from 0-60°. In the eighth O site, O(8) is bonded to one Sr(1), one Sr(2), one Sr(5), one Sr(6), one Mn(2), and one Mn(3) atom to form distorted OSr4Mn2 octahedra that share  a cornercorner with one O(2)Sr5Fe octahedra,  a cornercorner with one O(1)Sr5Mn octahedra, corners with two equivalent O(8)Sr4Mn2 octahedra, corners with two equivalent O(5)Sr4MnFe octahedra, corners with two equivalent O(3)Sr5Mn octahedra, corners with two equivalent O(4)Sr5Mn octahedra, corners with six equivalent O(7)Sr4MnFe octahedra,  an edgeedge with one O(7)Sr4MnFe octahedra, edges with two equivalent O(8)Sr4Mn2 octahedra,  a faceface with one O(5)Sr4MnFe octahedra,  a faceface with one O(3)Sr5Mn octahedra,  a faceface with one O(4)Sr5Mn octahedra, and faces with four equivalent O(8)Sr4Mn2 octahedra. The corner-sharing octahedral tilt angles range from 0-60°. is represented by the CIF file [CIF]
data_Sr6Mn3FeO14
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.506
_cell_length_b   10.506
_cell_length_c   5.510
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   149.576
_symmetry_Int_Tables_number   1
_cell_volume   308.011
_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  0.500  0.500  0.000  1.0
  Sr  Sr1  1  1.000  0.000  0.500  1.0
  Sr  Sr2  1  0.817  0.183  0.500  1.0
  Sr  Sr3  1  0.317  0.683  0.000  1.0
  Sr  Sr4  1  0.683  0.317  0.000  1.0
  Sr  Sr5  1  0.183  0.817  0.500  1.0
  Mn  Mn6  1  0.903  0.097  0.000  1.0
  Mn  Mn7  1  0.097  0.903  0.000  1.0
  Mn  Mn8  1  0.598  0.402  0.500  1.0
  Fe  Fe9  1  0.403  0.597  0.500  1.0
  O  O10  1  0.806  0.194  0.000  1.0
  O  O11  1  0.306  0.694  0.500  1.0
  O  O12  1  0.693  0.307  0.500  1.0
  O  O13  1  0.193  0.807  0.000  1.0
  O  O14  1  0.501  0.499  0.500  1.0
  O  O15  1  0.001  0.999  0.000  1.0
  O  O16  1  0.656  0.848  0.752  1.0
  O  O17  1  0.152  0.344  0.248  1.0
  O  O18  1  0.152  0.344  0.752  1.0
  O  O19  1  0.656  0.848  0.248  1.0
  O  O20  1  0.846  0.654  0.750  1.0
  O  O21  1  0.346  0.154  0.250  1.0
  O  O22  1  0.346  0.154  0.750  1.0
  O  O23  1  0.846  0.654  0.250  1.0
[/CIF]
.