The structure described by KMgMn4O8 crystallizes in the triclinic P1 space group. K(1) is bonded in a 7-coordinate geometry to one O(8), two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms. Mg(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted MgO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, and  an edgeedge with one Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 65-69°. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2), one O(7), two equivalent O(4), and two equivalent O(5) atoms to form distorted MnO6 octahedra that share corners with two equivalent Mn(3)O6 octahedra,  a cornercorner with one Mg(1)O4 tetrahedra, edges with two equivalent Mn(1)O6 octahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 46°. In the second Mn site, Mn(2) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(8), and two equivalent O(6) atoms. In the third Mn site, Mn(3) is bonded to one O(1), one O(6), two equivalent O(2), and two equivalent O(8) atoms to form distorted MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one Mg(1)O4 tetrahedra, edges with two equivalent Mn(3)O6 octahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 46°. In the fourth Mn site, Mn(4) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(5), and two equivalent O(7) atoms. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mg(1), one Mn(3), and one Mn(4) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Mn(1), and two equivalent Mn(3) atoms. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mg(1), one Mn(2), and one Mn(4) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(2), and two equivalent Mn(1) atoms. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent K(1), one Mn(4), and two equivalent Mn(1) atoms. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent K(1), one Mn(3), and two equivalent Mn(2) atoms. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to two equivalent K(1), one Mn(1), and two equivalent Mn(4) atoms. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one K(1), one Mn(2), and two equivalent Mn(3) atoms. is represented by the CIF card [CIF]
data_KMgMn4O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.205
_cell_length_b   7.608
_cell_length_c   7.671
_cell_angle_alpha   87.012
_cell_angle_beta   75.771
_cell_angle_gamma   77.778
_symmetry_Int_Tables_number   1
_cell_volume   177.216
_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
  K  K0  1  0.500  0.999  0.003  1.0
  Mg  Mg1  1  0.242  0.499  0.510  1.0
  Mn  Mn2  1  0.739  0.520  0.168  1.0
  Mn  Mn3  1  0.099  0.165  0.469  1.0
  Mn  Mn4  1  0.723  0.836  0.517  1.0
  Mn  Mn5  1  0.445  0.474  0.839  1.0
  O  O6  1  0.783  0.640  0.692  1.0
  O  O7  1  0.474  0.693  0.369  1.0
  O  O8  1  0.576  0.311  0.632  1.0
  O  O9  1  0.164  0.374  0.306  1.0
  O  O10  1  0.262  0.633  0.048  1.0
  O  O11  1  0.696  0.039  0.355  1.0
  O  O12  1  0.960  0.360  0.964  1.0
  O  O13  1  0.088  0.956  0.628  1.0
[/CIF]
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The structure described by KMgMn4O8 crystallizes in the triclinic P1 space group. K(1) is bonded in a 7-coordinate geometry to one O(8), two equivalent O(5), two equivalent O(6), and two equivalent O(7) atoms. Mg(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form distorted MgO4 tetrahedra that share  a cornercorner with one Mn(1)O6 octahedra,  a cornercorner with one Mn(3)O6 octahedra,  an edgeedge with one Mn(1)O6 octahedra, and  an edgeedge with one Mn(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 65-69°. There are four inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(2), one O(7), two equivalent O(4), and two equivalent O(5) atoms to form distorted MnO6 octahedra that share corners with two equivalent Mn(3)O6 octahedra,  a cornercorner with one Mg(1)O4 tetrahedra, edges with two equivalent Mn(1)O6 octahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 46°. In the second Mn site, Mn(2) is bonded in a 5-coordinate geometry to one O(3), one O(4), one O(8), and two equivalent O(6) atoms. In the third Mn site, Mn(3) is bonded to one O(1), one O(6), two equivalent O(2), and two equivalent O(8) atoms to form distorted MnO6 octahedra that share corners with two equivalent Mn(1)O6 octahedra,  a cornercorner with one Mg(1)O4 tetrahedra, edges with two equivalent Mn(3)O6 octahedra, and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles are 46°. In the fourth Mn site, Mn(4) is bonded in a 5-coordinate geometry to one O(1), one O(3), one O(5), and two equivalent O(7) atoms. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Mg(1), one Mn(3), and one Mn(4) atom. In the second O site, O(2) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one Mn(1), and two equivalent Mn(3) atoms. In the third O site, O(3) is bonded in a 3-coordinate geometry to one Mg(1), one Mn(2), and one Mn(4) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(2), and two equivalent Mn(1) atoms. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to two equivalent K(1), one Mn(4), and two equivalent Mn(1) atoms. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to two equivalent K(1), one Mn(3), and two equivalent Mn(2) atoms. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to two equivalent K(1), one Mn(1), and two equivalent Mn(4) atoms. In the eighth O site, O(8) is bonded in a 3-coordinate geometry to one K(1), one Mn(2), and two equivalent Mn(3) atoms. is represented by the CIF card [CIF]
data_KMgMn4O8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.205
_cell_length_b   7.608
_cell_length_c   7.671
_cell_angle_alpha   87.012
_cell_angle_beta   75.771
_cell_angle_gamma   77.778
_symmetry_Int_Tables_number   1
_cell_volume   177.216
_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
  K  K0  1  0.500  0.999  0.003  1.0
  Mg  Mg1  1  0.242  0.499  0.510  1.0
  Mn  Mn2  1  0.739  0.520  0.168  1.0
  Mn  Mn3  1  0.099  0.165  0.469  1.0
  Mn  Mn4  1  0.723  0.836  0.517  1.0
  Mn  Mn5  1  0.445  0.474  0.839  1.0
  O  O6  1  0.783  0.640  0.692  1.0
  O  O7  1  0.474  0.693  0.369  1.0
  O  O8  1  0.576  0.311  0.632  1.0
  O  O9  1  0.164  0.374  0.306  1.0
  O  O10  1  0.262  0.633  0.048  1.0
  O  O11  1  0.696  0.039  0.355  1.0
  O  O12  1  0.960  0.360  0.964  1.0
  O  O13  1  0.088  0.956  0.628  1.0
[/CIF]
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