The compound described by La5Mn5O18 is Orthorhombic Perovskite-like structured and crystallizes in the triclinic P1 space group. There are five inequivalent La sites. In the first La site, La(1) is bonded in a 12-coordinate geometry to one O(11), one O(12), one O(17), one O(18), one O(3), one O(6), one O(7), one O(8), two equivalent O(5), and two equivalent O(9) atoms. In the second La site, La(2) is bonded in a 12-coordinate geometry to one O(11), one O(12), one O(17), one O(18), one O(3), one O(6), one O(7), one O(8), two equivalent O(5), and two equivalent O(9) atoms. In the third La site, La(3) is bonded in a 12-coordinate geometry to one O(1), one O(11), one O(12), one O(13), one O(16), one O(2), one O(7), one O(8), two equivalent O(10), and two equivalent O(14) atoms. In the fourth La site, La(4) is bonded in a 12-coordinate geometry to one O(1), one O(11), one O(12), one O(13), one O(16), one O(2), one O(7), one O(8), two equivalent O(10), and two equivalent O(14) atoms. In the fifth La site, La(5) is bonded in a 12-coordinate geometry to one O(1), one O(13), one O(16), one O(17), one O(18), one O(2), one O(3), one O(6), two equivalent O(15), and two equivalent O(4) atoms. There are five inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(10), one O(13), one O(16), one O(2), and one O(4) atom to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 8-24°. In the second Mn site, Mn(2) is bonded to one O(15), one O(17), one O(18), one O(3), one O(6), and one O(9) atom to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 11-23°. In the third Mn site, Mn(3) is bonded to one O(17), one O(18), one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 11-23°. In the fourth Mn site, Mn(4) is bonded to one O(10), one O(11), one O(12), one O(7), one O(8), and one O(9) atom to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 17°. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(13), one O(14), one O(15), one O(16), and one O(2) atom to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 8-24°. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one La(3), one La(4), one La(5), one Mn(1), and one Mn(5) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one La(3), one La(4), one La(5), one Mn(1), and one Mn(5) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one La(1), one La(2), one La(5), one Mn(2), and one Mn(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent La(5), one Mn(1), and one Mn(3) atom. In the fifth O site, O(5) is bonded in a 1-coordinate geometry to two equivalent La(1), two equivalent La(2), and one Mn(3) atom. In the sixth O site, O(6) is bonded in a distorted linear geometry to one La(1), one La(2), one La(5), one Mn(2), and one Mn(3) atom. In the seventh O site, O(7) is bonded in a 1-coordinate geometry to one La(1), one La(2), one La(3), one La(4), and one Mn(4) atom. In the eighth O site, O(8) is bonded in a 1-coordinate geometry to one La(1), one La(2), one La(3), one La(4), and one Mn(4) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to two equivalent La(1), two equivalent La(2), one Mn(2), and one Mn(4) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to two equivalent La(3), two equivalent La(4), one Mn(1), and one Mn(4) atom. In the eleventh O site, O(11) is bonded in a 1-coordinate geometry to one La(1), one La(2), one La(3), one La(4), and one Mn(4) atom. In the twelfth O site, O(12) is bonded in a 1-coordinate geometry to one La(1), one La(2), one La(3), one La(4), and one Mn(4) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one La(3), one La(4), one La(5), one Mn(1), and one Mn(5) atom. In the fourteenth O site, O(14) is bonded in a 1-coordinate geometry to two equivalent La(3), two equivalent La(4), and one Mn(5) atom. In the fifteenth O site, O(15) is bonded in a 2-coordinate geometry to two equivalent La(5), one Mn(2), and one Mn(5) atom. In the sixteenth O site, O(16) is bonded in a distorted linear geometry to one La(3), one La(4), one La(5), one Mn(1), and one Mn(5) atom. In the seventeenth O site, O(17) is bonded in a 4-coordinate geometry to one La(1), one La(2), one La(5), one Mn(2), and one Mn(3) atom. In the eighteenth O site, O(18) is bonded in a 5-coordinate geometry to one La(1), one La(2), one La(5), one Mn(2), and one Mn(3) atom. is represented by the CIF file [CIF]
data_La5Mn5O18
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.410
_cell_length_b   5.484
_cell_length_c   12.223
_cell_angle_alpha   102.955
_cell_angle_beta   101.787
_cell_angle_gamma   90.017
_symmetry_Int_Tables_number   1
_cell_volume   345.511
_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
  La  La0  1  0.924  0.426  0.844  1.0
  La  La1  1  0.419  0.923  0.839  1.0
  La  La2  1  0.578  0.079  0.155  1.0
  La  La3  1  0.080  0.581  0.162  1.0
  La  La4  1  0.750  0.249  0.500  1.0
  Mn  Mn5  1  0.667  0.675  0.339  1.0
  Mn  Mn6  1  0.332  0.328  0.660  1.0
  Mn  Mn7  1  0.833  0.827  0.663  1.0
  Mn  Mn8  1  0.501  0.502  0.000  1.0
  Mn  Mn9  1  0.170  0.176  0.338  1.0
  O  O10  1  0.390  0.888  0.306  1.0
  O  O11  1  0.877  0.932  0.311  1.0
  O  O12  1  0.040  0.535  0.656  1.0
  O  O13  1  0.747  0.807  0.497  1.0
  O  O14  1  0.905  0.869  0.821  1.0
  O  O15  1  0.558  0.590  0.653  1.0
  O  O16  1  0.775  0.725  0.016  1.0
  O  O17  1  0.710  0.228  0.983  1.0
  O  O18  1  0.418  0.470  0.833  1.0
  O  O19  1  0.585  0.535  0.167  1.0
  O  O20  1  0.284  0.768  0.013  1.0
  O  O21  1  0.231  0.274  0.989  1.0
  O  O22  1  0.463  0.384  0.344  1.0
  O  O23  1  0.092  0.138  0.179  1.0
  O  O24  1  0.252  0.196  0.503  1.0
  O  O25  1  0.937  0.438  0.347  1.0
  O  O26  1  0.112  0.084  0.694  1.0
  O  O27  1  0.621  0.123  0.688  1.0
[/CIF]
.
The compound described by La5Mn5O18 is Orthorhombic Perovskite-like structured and crystallizes in the triclinic P1 space group. There are five inequivalent La sites. In the first La site, La(1) is bonded in a 12-coordinate geometry to one O(11), one O(12), one O(17), one O(18), one O(3), one O(6), one O(7), one O(8), two equivalent O(5), and two equivalent O(9) atoms. In the second La site, La(2) is bonded in a 12-coordinate geometry to one O(11), one O(12), one O(17), one O(18), one O(3), one O(6), one O(7), one O(8), two equivalent O(5), and two equivalent O(9) atoms. In the third La site, La(3) is bonded in a 12-coordinate geometry to one O(1), one O(11), one O(12), one O(13), one O(16), one O(2), one O(7), one O(8), two equivalent O(10), and two equivalent O(14) atoms. In the fourth La site, La(4) is bonded in a 12-coordinate geometry to one O(1), one O(11), one O(12), one O(13), one O(16), one O(2), one O(7), one O(8), two equivalent O(10), and two equivalent O(14) atoms. In the fifth La site, La(5) is bonded in a 12-coordinate geometry to one O(1), one O(13), one O(16), one O(17), one O(18), one O(2), one O(3), one O(6), two equivalent O(15), and two equivalent O(4) atoms. There are five inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(10), one O(13), one O(16), one O(2), and one O(4) atom to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 8-24°. In the second Mn site, Mn(2) is bonded to one O(15), one O(17), one O(18), one O(3), one O(6), and one O(9) atom to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 11-23°. In the third Mn site, Mn(3) is bonded to one O(17), one O(18), one O(3), one O(4), one O(5), and one O(6) atom to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 11-23°. In the fourth Mn site, Mn(4) is bonded to one O(10), one O(11), one O(12), one O(7), one O(8), and one O(9) atom to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles are 17°. In the fifth Mn site, Mn(5) is bonded to one O(1), one O(13), one O(14), one O(15), one O(16), and one O(2) atom to form corner-sharing MnO6 octahedra. The corner-sharing octahedral tilt angles range from 8-24°. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to one La(3), one La(4), one La(5), one Mn(1), and one Mn(5) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one La(3), one La(4), one La(5), one Mn(1), and one Mn(5) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one La(1), one La(2), one La(5), one Mn(2), and one Mn(3) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to two equivalent La(5), one Mn(1), and one Mn(3) atom. In the fifth O site, O(5) is bonded in a 1-coordinate geometry to two equivalent La(1), two equivalent La(2), and one Mn(3) atom. In the sixth O site, O(6) is bonded in a distorted linear geometry to one La(1), one La(2), one La(5), one Mn(2), and one Mn(3) atom. In the seventh O site, O(7) is bonded in a 1-coordinate geometry to one La(1), one La(2), one La(3), one La(4), and one Mn(4) atom. In the eighth O site, O(8) is bonded in a 1-coordinate geometry to one La(1), one La(2), one La(3), one La(4), and one Mn(4) atom. In the ninth O site, O(9) is bonded in a 3-coordinate geometry to two equivalent La(1), two equivalent La(2), one Mn(2), and one Mn(4) atom. In the tenth O site, O(10) is bonded in a 2-coordinate geometry to two equivalent La(3), two equivalent La(4), one Mn(1), and one Mn(4) atom. In the eleventh O site, O(11) is bonded in a 1-coordinate geometry to one La(1), one La(2), one La(3), one La(4), and one Mn(4) atom. In the twelfth O site, O(12) is bonded in a 1-coordinate geometry to one La(1), one La(2), one La(3), one La(4), and one Mn(4) atom. In the thirteenth O site, O(13) is bonded in a 2-coordinate geometry to one La(3), one La(4), one La(5), one Mn(1), and one Mn(5) atom. In the fourteenth O site, O(14) is bonded in a 1-coordinate geometry to two equivalent La(3), two equivalent La(4), and one Mn(5) atom. In the fifteenth O site, O(15) is bonded in a 2-coordinate geometry to two equivalent La(5), one Mn(2), and one Mn(5) atom. In the sixteenth O site, O(16) is bonded in a distorted linear geometry to one La(3), one La(4), one La(5), one Mn(1), and one Mn(5) atom. In the seventeenth O site, O(17) is bonded in a 4-coordinate geometry to one La(1), one La(2), one La(5), one Mn(2), and one Mn(3) atom. In the eighteenth O site, O(18) is bonded in a 5-coordinate geometry to one La(1), one La(2), one La(5), one Mn(2), and one Mn(3) atom. is represented by the CIF file [CIF]
data_La5Mn5O18
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.410
_cell_length_b   5.484
_cell_length_c   12.223
_cell_angle_alpha   102.955
_cell_angle_beta   101.787
_cell_angle_gamma   90.017
_symmetry_Int_Tables_number   1
_cell_volume   345.511
_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
  La  La0  1  0.924  0.426  0.844  1.0
  La  La1  1  0.419  0.923  0.839  1.0
  La  La2  1  0.578  0.079  0.155  1.0
  La  La3  1  0.080  0.581  0.162  1.0
  La  La4  1  0.750  0.249  0.500  1.0
  Mn  Mn5  1  0.667  0.675  0.339  1.0
  Mn  Mn6  1  0.332  0.328  0.660  1.0
  Mn  Mn7  1  0.833  0.827  0.663  1.0
  Mn  Mn8  1  0.501  0.502  0.000  1.0
  Mn  Mn9  1  0.170  0.176  0.338  1.0
  O  O10  1  0.390  0.888  0.306  1.0
  O  O11  1  0.877  0.932  0.311  1.0
  O  O12  1  0.040  0.535  0.656  1.0
  O  O13  1  0.747  0.807  0.497  1.0
  O  O14  1  0.905  0.869  0.821  1.0
  O  O15  1  0.558  0.590  0.653  1.0
  O  O16  1  0.775  0.725  0.016  1.0
  O  O17  1  0.710  0.228  0.983  1.0
  O  O18  1  0.418  0.470  0.833  1.0
  O  O19  1  0.585  0.535  0.167  1.0
  O  O20  1  0.284  0.768  0.013  1.0
  O  O21  1  0.231  0.274  0.989  1.0
  O  O22  1  0.463  0.384  0.344  1.0
  O  O23  1  0.092  0.138  0.179  1.0
  O  O24  1  0.252  0.196  0.503  1.0
  O  O25  1  0.937  0.438  0.347  1.0
  O  O26  1  0.112  0.084  0.694  1.0
  O  O27  1  0.621  0.123  0.688  1.0
[/CIF]
.