The crystal structure described by MgMn2Al2O6 is Chalcostibite-derived structured and crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form distorted MgO4 trigonal pyramids that share corners with two equivalent Al(2)O4 tetrahedra, corners with three equivalent Mn(1)O5 trigonal bipyramids, corners with four equivalent Mn(2)O5 trigonal bipyramids, and corners with two equivalent Al(1)O4 trigonal pyramids. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(6) atom to form distorted MnO5 trigonal bipyramids that share corners with three equivalent Al(2)O4 tetrahedra, corners with two equivalent Mn(2)O5 trigonal bipyramids, corners with three equivalent Mg(1)O4 trigonal pyramids, corners with four equivalent Al(1)O4 trigonal pyramids, and  an edgeedge with one Mn(2)O5 trigonal bipyramid. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(4), one O(5), and one O(6) atom to form distorted MnO5 trigonal bipyramids that share corners with three equivalent Al(2)O4 tetrahedra, corners with two equivalent Mn(1)O5 trigonal bipyramids, corners with three equivalent Al(1)O4 trigonal pyramids, corners with four equivalent Mg(1)O4 trigonal pyramids, and  an edgeedge with one Mn(1)O5 trigonal bipyramid. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(1), one O(2), one O(3), and one O(6) atom to form distorted AlO4 trigonal pyramids that share corners with two equivalent Al(2)O4 tetrahedra, corners with three equivalent Mn(2)O5 trigonal bipyramids, corners with four equivalent Mn(1)O5 trigonal bipyramids, and corners with two equivalent Mg(1)O4 trigonal pyramids. In the second Al site, Al(2) is bonded to one O(1), one O(3), one O(4), and one O(5) atom to form AlO4 tetrahedra that share corners with three equivalent Mn(1)O5 trigonal bipyramids, corners with three equivalent Mn(2)O5 trigonal bipyramids, corners with two equivalent Mg(1)O4 trigonal pyramids, and corners with two equivalent Al(1)O4 trigonal pyramids. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Mn(1), one Mn(2), one Al(1), and one Al(2) atom to form distorted corner-sharing OMn2Al2 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(1), one Mn(2), and one Al(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(1), one Al(1), and one Al(2) atom. In the fourth O site, O(4) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Al(2) atom to form corner-sharing OMgMn2Al tetrahedra. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mg(1), one Mn(2), and one Al(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(1), one Mn(2), and one Al(1) atom. is represented by the CIF card [CIF]
data_MgMn2Al2O6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.992
_cell_length_b   5.732
_cell_length_c   5.541
_cell_angle_alpha   69.570
_cell_angle_beta   115.154
_cell_angle_gamma   112.729
_symmetry_Int_Tables_number   1
_cell_volume   129.075
_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
  Mg  Mg0  1  0.359  0.229  0.332  1.0
  Mn  Mn1  1  0.733  0.456  0.915  1.0
  Mn  Mn2  1  0.518  0.882  0.052  1.0
  Al  Al3  1  0.940  0.102  0.619  1.0
  Al  Al4  1  0.065  0.659  0.478  1.0
  O  O5  1  0.022  0.789  0.718  1.0
  O  O6  1  0.657  0.128  0.714  1.0
  O  O7  1  0.243  0.398  0.701  1.0
  O  O8  1  0.679  0.556  0.242  1.0
  O  O9  1  0.282  0.884  0.275  1.0
  O  O10  1  0.914  0.180  0.266  1.0
[/CIF]
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The crystal structure described by MgMn2Al2O6 is Chalcostibite-derived structured and crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(2), one O(4), one O(5), and one O(6) atom to form distorted MgO4 trigonal pyramids that share corners with two equivalent Al(2)O4 tetrahedra, corners with three equivalent Mn(1)O5 trigonal bipyramids, corners with four equivalent Mn(2)O5 trigonal bipyramids, and corners with two equivalent Al(1)O4 trigonal pyramids. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(6) atom to form distorted MnO5 trigonal bipyramids that share corners with three equivalent Al(2)O4 tetrahedra, corners with two equivalent Mn(2)O5 trigonal bipyramids, corners with three equivalent Mg(1)O4 trigonal pyramids, corners with four equivalent Al(1)O4 trigonal pyramids, and  an edgeedge with one Mn(2)O5 trigonal bipyramid. In the second Mn site, Mn(2) is bonded to one O(1), one O(2), one O(4), one O(5), and one O(6) atom to form distorted MnO5 trigonal bipyramids that share corners with three equivalent Al(2)O4 tetrahedra, corners with two equivalent Mn(1)O5 trigonal bipyramids, corners with three equivalent Al(1)O4 trigonal pyramids, corners with four equivalent Mg(1)O4 trigonal pyramids, and  an edgeedge with one Mn(1)O5 trigonal bipyramid. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded to one O(1), one O(2), one O(3), and one O(6) atom to form distorted AlO4 trigonal pyramids that share corners with two equivalent Al(2)O4 tetrahedra, corners with three equivalent Mn(2)O5 trigonal bipyramids, corners with four equivalent Mn(1)O5 trigonal bipyramids, and corners with two equivalent Mg(1)O4 trigonal pyramids. In the second Al site, Al(2) is bonded to one O(1), one O(3), one O(4), and one O(5) atom to form AlO4 tetrahedra that share corners with three equivalent Mn(1)O5 trigonal bipyramids, corners with three equivalent Mn(2)O5 trigonal bipyramids, corners with two equivalent Mg(1)O4 trigonal pyramids, and corners with two equivalent Al(1)O4 trigonal pyramids. There are six inequivalent O sites. In the first O site, O(1) is bonded to one Mn(1), one Mn(2), one Al(1), and one Al(2) atom to form distorted corner-sharing OMn2Al2 tetrahedra. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(1), one Mn(2), and one Al(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mn(1), one Al(1), and one Al(2) atom. In the fourth O site, O(4) is bonded to one Mg(1), one Mn(1), one Mn(2), and one Al(2) atom to form corner-sharing OMgMn2Al tetrahedra. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mg(1), one Mn(2), and one Al(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one Mg(1), one Mn(1), one Mn(2), and one Al(1) atom. is represented by the CIF card [CIF]
data_MgMn2Al2O6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.992
_cell_length_b   5.732
_cell_length_c   5.541
_cell_angle_alpha   69.570
_cell_angle_beta   115.154
_cell_angle_gamma   112.729
_symmetry_Int_Tables_number   1
_cell_volume   129.075
_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
  Mg  Mg0  1  0.359  0.229  0.332  1.0
  Mn  Mn1  1  0.733  0.456  0.915  1.0
  Mn  Mn2  1  0.518  0.882  0.052  1.0
  Al  Al3  1  0.940  0.102  0.619  1.0
  Al  Al4  1  0.065  0.659  0.478  1.0
  O  O5  1  0.022  0.789  0.718  1.0
  O  O6  1  0.657  0.128  0.714  1.0
  O  O7  1  0.243  0.398  0.701  1.0
  O  O8  1  0.679  0.556  0.242  1.0
  O  O9  1  0.282  0.884  0.275  1.0
  O  O10  1  0.914  0.180  0.266  1.0
[/CIF]
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