The crystal structure described by Li2MnAlO4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(2), one O(3), one O(4), and two equivalent O(1) atoms to form LiO5 trigonal bipyramids that share corners with two equivalent Li(1)O5 trigonal bipyramids, corners with two equivalent Li(2)O5 trigonal bipyramids, corners with four equivalent Al(1)O5 trigonal bipyramids,  an edgeedge with one Al(1)O5 trigonal bipyramid, edges with two equivalent Li(2)O5 trigonal bipyramids, and edges with three equivalent Mn(1)O5 trigonal bipyramids. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(4), and two equivalent O(3) atoms to form LiO5 trigonal bipyramids that share corners with two equivalent Li(1)O5 trigonal bipyramids, corners with two equivalent Al(1)O5 trigonal bipyramids, corners with four equivalent Mn(1)O5 trigonal bipyramids,  an edgeedge with one Li(2)O5 trigonal bipyramid,  an edgeedge with one Mn(1)O5 trigonal bipyramid, edges with two equivalent Li(1)O5 trigonal bipyramids, and edges with two equivalent Al(1)O5 trigonal bipyramids. Mn(1) is bonded to one O(1), one O(2), one O(3), and two equivalent O(4) atoms to form MnO5 trigonal bipyramids that share corners with two equivalent Mn(1)O5 trigonal bipyramids, corners with two equivalent Al(1)O5 trigonal bipyramids, corners with four equivalent Li(2)O5 trigonal bipyramids,  an edgeedge with one Li(2)O5 trigonal bipyramid, edges with two equivalent Al(1)O5 trigonal bipyramids, and edges with three equivalent Li(1)O5 trigonal bipyramids. Al(1) is bonded to one O(1), one O(3), one O(4), and two equivalent O(2) atoms to form AlO5 trigonal bipyramids that share corners with two equivalent Li(2)O5 trigonal bipyramids, corners with two equivalent Mn(1)O5 trigonal bipyramids, corners with four equivalent Li(1)O5 trigonal bipyramids,  an edgeedge with one Li(1)O5 trigonal bipyramid,  an edgeedge with one Al(1)O5 trigonal bipyramid, edges with two equivalent Li(2)O5 trigonal bipyramids, and edges with two equivalent Mn(1)O5 trigonal bipyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Li(2), two equivalent Li(1), one Mn(1), and one Al(1) atom to form OLi3MnAl trigonal bipyramids that share corners with two equivalent O(1)Li3MnAl trigonal bipyramids, corners with two equivalent O(3)Li3MnAl trigonal bipyramids, corners with four equivalent O(2)Li2MnAl2 trigonal bipyramids,  an edgeedge with one O(2)Li2MnAl2 trigonal bipyramid, edges with two equivalent O(3)Li3MnAl trigonal bipyramids, and edges with three equivalent O(4)Li2Mn2Al trigonal bipyramids. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Mn(1), and two equivalent Al(1) atoms to form OLi2MnAl2 trigonal bipyramids that share corners with two equivalent O(4)Li2Mn2Al trigonal bipyramids, corners with two equivalent O(3)Li3MnAl trigonal bipyramids, corners with four equivalent O(1)Li3MnAl trigonal bipyramids,  an edgeedge with one O(2)Li2MnAl2 trigonal bipyramid,  an edgeedge with one O(1)Li3MnAl trigonal bipyramid, edges with two equivalent O(4)Li2Mn2Al trigonal bipyramids, and edges with two equivalent O(3)Li3MnAl trigonal bipyramids. In the third O site, O(3) is bonded to one Li(1), two equivalent Li(2), one Mn(1), and one Al(1) atom to form OLi3MnAl trigonal bipyramids that share corners with two equivalent O(2)Li2MnAl2 trigonal bipyramids, corners with two equivalent O(1)Li3MnAl trigonal bipyramids, corners with four equivalent O(4)Li2Mn2Al trigonal bipyramids,  an edgeedge with one O(4)Li2Mn2Al trigonal bipyramid,  an edgeedge with one O(3)Li3MnAl trigonal bipyramid, edges with two equivalent O(2)Li2MnAl2 trigonal bipyramids, and edges with two equivalent O(1)Li3MnAl trigonal bipyramids. In the fourth O site, O(4) is bonded to one Li(1), one Li(2), two equivalent Mn(1), and one Al(1) atom to form OLi2Mn2Al trigonal bipyramids that share corners with two equivalent O(4)Li2Mn2Al trigonal bipyramids, corners with two equivalent O(2)Li2MnAl2 trigonal bipyramids, corners with four equivalent O(3)Li3MnAl trigonal bipyramids,  an edgeedge with one O(3)Li3MnAl trigonal bipyramid, edges with two equivalent O(2)Li2MnAl2 trigonal bipyramids, and edges with three equivalent O(1)Li3MnAl trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li2MnAlO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.909
_cell_length_b   5.327
_cell_length_c   11.128
_cell_angle_alpha   69.104
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   327.229
_cell_formula_units_Z   4
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
  Li  Li0  1  0.339  0.932  0.194  1.0
  Li  Li1  1  0.161  0.932  0.694  1.0
  Li  Li2  1  0.155  0.695  0.429  1.0
  Li  Li3  1  0.345  0.695  0.929  1.0
  Li  Li4  1  0.655  0.305  0.071  1.0
  Li  Li5  1  0.845  0.305  0.571  1.0
  Li  Li6  1  0.839  0.068  0.306  1.0
  Li  Li7  1  0.661  0.068  0.806  1.0
  Mn  Mn8  1  0.186  0.436  0.182  1.0
  Mn  Mn9  1  0.686  0.564  0.318  1.0
  Mn  Mn10  1  0.314  0.436  0.682  1.0
  Mn  Mn11  1  0.814  0.564  0.818  1.0
  Al  Al12  1  0.829  0.810  0.059  1.0
  Al  Al13  1  0.671  0.810  0.559  1.0
  Al  Al14  1  0.329  0.190  0.441  1.0
  Al  Al15  1  0.171  0.190  0.941  1.0
  O  O16  1  0.688  0.907  0.182  1.0
  O  O17  1  0.812  0.907  0.682  1.0
  O  O18  1  0.142  0.811  0.057  1.0
  O  O19  1  0.358  0.811  0.557  1.0
  O  O20  1  0.816  0.706  0.443  1.0
  O  O21  1  0.331  0.549  0.314  1.0
  O  O22  1  0.684  0.706  0.943  1.0
  O  O23  1  0.169  0.549  0.814  1.0
  O  O24  1  0.831  0.451  0.186  1.0
  O  O25  1  0.316  0.294  0.057  1.0
  O  O26  1  0.669  0.451  0.686  1.0
  O  O27  1  0.184  0.294  0.557  1.0
  O  O28  1  0.642  0.189  0.443  1.0
  O  O29  1  0.858  0.189  0.943  1.0
  O  O30  1  0.188  0.093  0.318  1.0
  O  O31  1  0.312  0.093  0.818  1.0
[/CIF]
.
The crystal structure described by Li2MnAlO4 crystallizes in the monoclinic P2_1/c space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded to one O(2), one O(3), one O(4), and two equivalent O(1) atoms to form LiO5 trigonal bipyramids that share corners with two equivalent Li(1)O5 trigonal bipyramids, corners with two equivalent Li(2)O5 trigonal bipyramids, corners with four equivalent Al(1)O5 trigonal bipyramids,  an edgeedge with one Al(1)O5 trigonal bipyramid, edges with two equivalent Li(2)O5 trigonal bipyramids, and edges with three equivalent Mn(1)O5 trigonal bipyramids. In the second Li site, Li(2) is bonded to one O(1), one O(2), one O(4), and two equivalent O(3) atoms to form LiO5 trigonal bipyramids that share corners with two equivalent Li(1)O5 trigonal bipyramids, corners with two equivalent Al(1)O5 trigonal bipyramids, corners with four equivalent Mn(1)O5 trigonal bipyramids,  an edgeedge with one Li(2)O5 trigonal bipyramid,  an edgeedge with one Mn(1)O5 trigonal bipyramid, edges with two equivalent Li(1)O5 trigonal bipyramids, and edges with two equivalent Al(1)O5 trigonal bipyramids. Mn(1) is bonded to one O(1), one O(2), one O(3), and two equivalent O(4) atoms to form MnO5 trigonal bipyramids that share corners with two equivalent Mn(1)O5 trigonal bipyramids, corners with two equivalent Al(1)O5 trigonal bipyramids, corners with four equivalent Li(2)O5 trigonal bipyramids,  an edgeedge with one Li(2)O5 trigonal bipyramid, edges with two equivalent Al(1)O5 trigonal bipyramids, and edges with three equivalent Li(1)O5 trigonal bipyramids. Al(1) is bonded to one O(1), one O(3), one O(4), and two equivalent O(2) atoms to form AlO5 trigonal bipyramids that share corners with two equivalent Li(2)O5 trigonal bipyramids, corners with two equivalent Mn(1)O5 trigonal bipyramids, corners with four equivalent Li(1)O5 trigonal bipyramids,  an edgeedge with one Li(1)O5 trigonal bipyramid,  an edgeedge with one Al(1)O5 trigonal bipyramid, edges with two equivalent Li(2)O5 trigonal bipyramids, and edges with two equivalent Mn(1)O5 trigonal bipyramids. There are four inequivalent O sites. In the first O site, O(1) is bonded to one Li(2), two equivalent Li(1), one Mn(1), and one Al(1) atom to form OLi3MnAl trigonal bipyramids that share corners with two equivalent O(1)Li3MnAl trigonal bipyramids, corners with two equivalent O(3)Li3MnAl trigonal bipyramids, corners with four equivalent O(2)Li2MnAl2 trigonal bipyramids,  an edgeedge with one O(2)Li2MnAl2 trigonal bipyramid, edges with two equivalent O(3)Li3MnAl trigonal bipyramids, and edges with three equivalent O(4)Li2Mn2Al trigonal bipyramids. In the second O site, O(2) is bonded to one Li(1), one Li(2), one Mn(1), and two equivalent Al(1) atoms to form OLi2MnAl2 trigonal bipyramids that share corners with two equivalent O(4)Li2Mn2Al trigonal bipyramids, corners with two equivalent O(3)Li3MnAl trigonal bipyramids, corners with four equivalent O(1)Li3MnAl trigonal bipyramids,  an edgeedge with one O(2)Li2MnAl2 trigonal bipyramid,  an edgeedge with one O(1)Li3MnAl trigonal bipyramid, edges with two equivalent O(4)Li2Mn2Al trigonal bipyramids, and edges with two equivalent O(3)Li3MnAl trigonal bipyramids. In the third O site, O(3) is bonded to one Li(1), two equivalent Li(2), one Mn(1), and one Al(1) atom to form OLi3MnAl trigonal bipyramids that share corners with two equivalent O(2)Li2MnAl2 trigonal bipyramids, corners with two equivalent O(1)Li3MnAl trigonal bipyramids, corners with four equivalent O(4)Li2Mn2Al trigonal bipyramids,  an edgeedge with one O(4)Li2Mn2Al trigonal bipyramid,  an edgeedge with one O(3)Li3MnAl trigonal bipyramid, edges with two equivalent O(2)Li2MnAl2 trigonal bipyramids, and edges with two equivalent O(1)Li3MnAl trigonal bipyramids. In the fourth O site, O(4) is bonded to one Li(1), one Li(2), two equivalent Mn(1), and one Al(1) atom to form OLi2Mn2Al trigonal bipyramids that share corners with two equivalent O(4)Li2Mn2Al trigonal bipyramids, corners with two equivalent O(2)Li2MnAl2 trigonal bipyramids, corners with four equivalent O(3)Li3MnAl trigonal bipyramids,  an edgeedge with one O(3)Li3MnAl trigonal bipyramid, edges with two equivalent O(2)Li2MnAl2 trigonal bipyramids, and edges with three equivalent O(1)Li3MnAl trigonal bipyramids. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li2MnAlO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.909
_cell_length_b   5.327
_cell_length_c   11.128
_cell_angle_alpha   69.104
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   327.229
_cell_formula_units_Z   4
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
  Li  Li0  1  0.339  0.932  0.194  1.0
  Li  Li1  1  0.161  0.932  0.694  1.0
  Li  Li2  1  0.155  0.695  0.429  1.0
  Li  Li3  1  0.345  0.695  0.929  1.0
  Li  Li4  1  0.655  0.305  0.071  1.0
  Li  Li5  1  0.845  0.305  0.571  1.0
  Li  Li6  1  0.839  0.068  0.306  1.0
  Li  Li7  1  0.661  0.068  0.806  1.0
  Mn  Mn8  1  0.186  0.436  0.182  1.0
  Mn  Mn9  1  0.686  0.564  0.318  1.0
  Mn  Mn10  1  0.314  0.436  0.682  1.0
  Mn  Mn11  1  0.814  0.564  0.818  1.0
  Al  Al12  1  0.829  0.810  0.059  1.0
  Al  Al13  1  0.671  0.810  0.559  1.0
  Al  Al14  1  0.329  0.190  0.441  1.0
  Al  Al15  1  0.171  0.190  0.941  1.0
  O  O16  1  0.688  0.907  0.182  1.0
  O  O17  1  0.812  0.907  0.682  1.0
  O  O18  1  0.142  0.811  0.057  1.0
  O  O19  1  0.358  0.811  0.557  1.0
  O  O20  1  0.816  0.706  0.443  1.0
  O  O21  1  0.331  0.549  0.314  1.0
  O  O22  1  0.684  0.706  0.943  1.0
  O  O23  1  0.169  0.549  0.814  1.0
  O  O24  1  0.831  0.451  0.186  1.0
  O  O25  1  0.316  0.294  0.057  1.0
  O  O26  1  0.669  0.451  0.686  1.0
  O  O27  1  0.184  0.294  0.557  1.0
  O  O28  1  0.642  0.189  0.443  1.0
  O  O29  1  0.858  0.189  0.943  1.0
  O  O30  1  0.188  0.093  0.318  1.0
  O  O31  1  0.312  0.093  0.818  1.0
[/CIF]
.