The compound described by Li11MnAs6 crystallizes in the orthorhombic Fdd2 space group. There are seven inequivalent Li sites. In the first Li site, Li(1) is bonded to one As(1), one As(2), and two equivalent As(3) atoms to form LiAs4 tetrahedra that share  a cornercorner with one Li(3)As4 tetrahedra,  a cornercorner with one Li(7)As4 tetrahedra, corners with two equivalent Li(1)As4 tetrahedra, corners with two equivalent Li(4)As4 tetrahedra, corners with two equivalent Li(5)As4 tetrahedra, corners with three equivalent Mn(1)As4 tetrahedra, corners with five equivalent Li(2)As4 tetrahedra,  an edgeedge with one Li(6)As4 tetrahedra,  an edgeedge with one Li(7)As4 tetrahedra, edges with two equivalent Li(3)As4 tetrahedra, and edges with two equivalent Li(5)As4 tetrahedra. In the second Li site, Li(2) is bonded to one As(1), one As(3), and two equivalent As(2) atoms to form LiAs4 tetrahedra that share  a cornercorner with one Li(5)As4 tetrahedra,  a cornercorner with one Li(6)As4 tetrahedra, corners with two equivalent Li(2)As4 tetrahedra, corners with two equivalent Li(3)As4 tetrahedra, corners with two equivalent Mn(1)As4 tetrahedra, corners with three equivalent Li(4)As4 tetrahedra, corners with five equivalent Li(1)As4 tetrahedra,  an edgeedge with one Li(6)As4 tetrahedra,  an edgeedge with one Li(7)As4 tetrahedra, edges with two equivalent Li(3)As4 tetrahedra, and edges with two equivalent Li(5)As4 tetrahedra. In the third Li site, Li(3) is bonded to one As(1), one As(3), and two equivalent As(2) atoms to form LiAs4 tetrahedra that share  a cornercorner with one Li(1)As4 tetrahedra,  a cornercorner with one Li(4)As4 tetrahedra, corners with two equivalent Li(2)As4 tetrahedra, corners with two equivalent Li(3)As4 tetrahedra, corners with two equivalent Li(7)As4 tetrahedra, corners with three equivalent Li(6)As4 tetrahedra, corners with five equivalent Li(5)As4 tetrahedra,  an edgeedge with one Li(4)As4 tetrahedra,  an edgeedge with one Mn(1)As4 tetrahedra, edges with two equivalent Li(1)As4 tetrahedra, and edges with two equivalent Li(2)As4 tetrahedra. In the fourth Li site, Li(4) is bonded to two equivalent As(1) and two equivalent As(2) atoms to form distorted LiAs4 tetrahedra that share corners with two equivalent Li(3)As4 tetrahedra, corners with two equivalent Li(6)As4 tetrahedra, corners with two equivalent Mn(1)As4 tetrahedra, corners with four equivalent Li(1)As4 tetrahedra, corners with six equivalent Li(2)As4 tetrahedra,  an edgeedge with one Li(6)As4 tetrahedra,  an edgeedge with one Li(7)As4 tetrahedra, edges with two equivalent Li(3)As4 tetrahedra, and edges with two equivalent Li(5)As4 tetrahedra. In the fifth Li site, Li(5) is bonded to one As(1), one As(2), and two equivalent As(3) atoms to form distorted LiAs4 tetrahedra that share  a cornercorner with one Li(2)As4 tetrahedra,  a cornercorner with one Mn(1)As4 tetrahedra, corners with two equivalent Li(1)As4 tetrahedra, corners with two equivalent Li(5)As4 tetrahedra, corners with two equivalent Li(6)As4 tetrahedra, corners with three equivalent Li(7)As4 tetrahedra, corners with five equivalent Li(3)As4 tetrahedra,  an edgeedge with one Li(4)As4 tetrahedra,  an edgeedge with one Mn(1)As4 tetrahedra, edges with two equivalent Li(1)As4 tetrahedra, and edges with two equivalent Li(2)As4 tetrahedra. In the sixth Li site, Li(6) is bonded to two equivalent As(1) and two equivalent As(2) atoms to form LiAs4 tetrahedra that share corners with two equivalent Li(2)As4 tetrahedra, corners with two equivalent Li(4)As4 tetrahedra, corners with two equivalent Li(7)As4 tetrahedra, corners with four equivalent Li(5)As4 tetrahedra, corners with six equivalent Li(3)As4 tetrahedra,  an edgeedge with one Li(4)As4 tetrahedra,  an edgeedge with one Mn(1)As4 tetrahedra, edges with two equivalent Li(1)As4 tetrahedra, and edges with two equivalent Li(2)As4 tetrahedra. In the seventh Li site, Li(7) is bonded to two equivalent As(1) and two equivalent As(3) atoms to form distorted LiAs4 tetrahedra that share corners with two equivalent Li(1)As4 tetrahedra, corners with two equivalent Li(6)As4 tetrahedra, corners with two equivalent Mn(1)As4 tetrahedra, corners with four equivalent Li(3)As4 tetrahedra, corners with six equivalent Li(5)As4 tetrahedra,  an edgeedge with one Li(4)As4 tetrahedra,  an edgeedge with one Mn(1)As4 tetrahedra, edges with two equivalent Li(1)As4 tetrahedra, and edges with two equivalent Li(2)As4 tetrahedra. Mn(1) is bonded to two equivalent As(1) and two equivalent As(3) atoms to form MnAs4 tetrahedra that share corners with two equivalent Li(4)As4 tetrahedra, corners with two equivalent Li(5)As4 tetrahedra, corners with two equivalent Li(7)As4 tetrahedra, corners with four equivalent Li(2)As4 tetrahedra, corners with six equivalent Li(1)As4 tetrahedra,  an edgeedge with one Li(6)As4 tetrahedra,  an edgeedge with one Li(7)As4 tetrahedra, edges with two equivalent Li(3)As4 tetrahedra, and edges with two equivalent Li(5)As4 tetrahedra. There are three inequivalent As sites. In the first As site, As(1) is bonded in a body-centered cubic geometry to one Li(1), one Li(2), one Li(3), one Li(4), one Li(5), one Li(6), one Li(7), and one Mn(1) atom. In the second As site, As(2) is bonded in a body-centered cubic geometry to one Li(1), one Li(4), one Li(5), one Li(6), two equivalent Li(2), and two equivalent Li(3) atoms. In the third As site, As(3) is bonded in a body-centered cubic geometry to one Li(2), one Li(3), one Li(7), two equivalent Li(1), two equivalent Li(5), and one Mn(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li11MnAs6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.174
_cell_length_b   13.529
_cell_length_c   7.366
_cell_angle_alpha   79.484
_cell_angle_beta   69.790
_cell_angle_gamma   30.725
_symmetry_Int_Tables_number   1
_cell_volume   657.648
_cell_formula_units_Z   2
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  0.720  0.447  0.036  1.0
  Li  Li1  1  0.202  0.965  0.547  1.0
  Li  Li2  1  0.966  0.204  0.286  1.0
  Li  Li3  1  0.285  0.048  0.964  1.0
  Li  Li4  1  0.046  0.284  0.706  1.0
  Li  Li5  1  0.367  0.133  0.367  1.0
  Li  Li6  1  0.455  0.715  0.794  1.0
  Li  Li7  1  0.132  0.368  0.132  1.0
  Li  Li8  1  0.803  0.530  0.454  1.0
  Li  Li9  1  0.454  0.214  0.803  1.0
  Li  Li10  1  0.535  0.795  0.214  1.0
  Li  Li11  1  0.214  0.456  0.535  1.0
  Li  Li12  1  0.547  0.286  0.202  1.0
  Li  Li13  1  0.619  0.881  0.619  1.0
  Li  Li14  1  0.964  0.703  0.285  1.0
  Li  Li15  1  0.706  0.964  0.046  1.0
  Li  Li16  1  0.036  0.796  0.720  1.0
  Li  Li17  1  0.794  0.036  0.455  1.0
  Li  Li18  1  0.117  0.883  0.117  1.0
  Li  Li19  1  0.882  0.118  0.882  1.0
  Li  Li20  1  0.286  0.544  0.966  1.0
  Li  Li21  1  0.369  0.631  0.369  1.0
  Mn  Mn22  1  0.876  0.624  0.876  1.0
  Mn  Mn23  1  0.626  0.374  0.626  1.0
  As  As24  1  0.513  0.488  0.958  1.0
  As  As25  1  0.958  0.042  0.513  1.0
  As  As26  1  0.089  0.080  0.916  1.0
  As  As27  1  0.170  0.161  0.334  1.0
  As  As28  1  0.585  0.563  0.438  1.0
  As  As29  1  0.208  0.292  0.762  1.0
  As  As30  1  0.334  0.334  0.170  1.0
  As  As31  1  0.687  0.665  0.837  1.0
  As  As32  1  0.762  0.737  0.208  1.0
  As  As33  1  0.438  0.413  0.585  1.0
  As  As34  1  0.837  0.812  0.687  1.0
  As  As35  1  0.916  0.916  0.089  1.0
[/CIF]
.
The compound described by Li11MnAs6 crystallizes in the orthorhombic Fdd2 space group. There are seven inequivalent Li sites. In the first Li site, Li(1) is bonded to one As(1), one As(2), and two equivalent As(3) atoms to form LiAs4 tetrahedra that share  a cornercorner with one Li(3)As4 tetrahedra,  a cornercorner with one Li(7)As4 tetrahedra, corners with two equivalent Li(1)As4 tetrahedra, corners with two equivalent Li(4)As4 tetrahedra, corners with two equivalent Li(5)As4 tetrahedra, corners with three equivalent Mn(1)As4 tetrahedra, corners with five equivalent Li(2)As4 tetrahedra,  an edgeedge with one Li(6)As4 tetrahedra,  an edgeedge with one Li(7)As4 tetrahedra, edges with two equivalent Li(3)As4 tetrahedra, and edges with two equivalent Li(5)As4 tetrahedra. In the second Li site, Li(2) is bonded to one As(1), one As(3), and two equivalent As(2) atoms to form LiAs4 tetrahedra that share  a cornercorner with one Li(5)As4 tetrahedra,  a cornercorner with one Li(6)As4 tetrahedra, corners with two equivalent Li(2)As4 tetrahedra, corners with two equivalent Li(3)As4 tetrahedra, corners with two equivalent Mn(1)As4 tetrahedra, corners with three equivalent Li(4)As4 tetrahedra, corners with five equivalent Li(1)As4 tetrahedra,  an edgeedge with one Li(6)As4 tetrahedra,  an edgeedge with one Li(7)As4 tetrahedra, edges with two equivalent Li(3)As4 tetrahedra, and edges with two equivalent Li(5)As4 tetrahedra. In the third Li site, Li(3) is bonded to one As(1), one As(3), and two equivalent As(2) atoms to form LiAs4 tetrahedra that share  a cornercorner with one Li(1)As4 tetrahedra,  a cornercorner with one Li(4)As4 tetrahedra, corners with two equivalent Li(2)As4 tetrahedra, corners with two equivalent Li(3)As4 tetrahedra, corners with two equivalent Li(7)As4 tetrahedra, corners with three equivalent Li(6)As4 tetrahedra, corners with five equivalent Li(5)As4 tetrahedra,  an edgeedge with one Li(4)As4 tetrahedra,  an edgeedge with one Mn(1)As4 tetrahedra, edges with two equivalent Li(1)As4 tetrahedra, and edges with two equivalent Li(2)As4 tetrahedra. In the fourth Li site, Li(4) is bonded to two equivalent As(1) and two equivalent As(2) atoms to form distorted LiAs4 tetrahedra that share corners with two equivalent Li(3)As4 tetrahedra, corners with two equivalent Li(6)As4 tetrahedra, corners with two equivalent Mn(1)As4 tetrahedra, corners with four equivalent Li(1)As4 tetrahedra, corners with six equivalent Li(2)As4 tetrahedra,  an edgeedge with one Li(6)As4 tetrahedra,  an edgeedge with one Li(7)As4 tetrahedra, edges with two equivalent Li(3)As4 tetrahedra, and edges with two equivalent Li(5)As4 tetrahedra. In the fifth Li site, Li(5) is bonded to one As(1), one As(2), and two equivalent As(3) atoms to form distorted LiAs4 tetrahedra that share  a cornercorner with one Li(2)As4 tetrahedra,  a cornercorner with one Mn(1)As4 tetrahedra, corners with two equivalent Li(1)As4 tetrahedra, corners with two equivalent Li(5)As4 tetrahedra, corners with two equivalent Li(6)As4 tetrahedra, corners with three equivalent Li(7)As4 tetrahedra, corners with five equivalent Li(3)As4 tetrahedra,  an edgeedge with one Li(4)As4 tetrahedra,  an edgeedge with one Mn(1)As4 tetrahedra, edges with two equivalent Li(1)As4 tetrahedra, and edges with two equivalent Li(2)As4 tetrahedra. In the sixth Li site, Li(6) is bonded to two equivalent As(1) and two equivalent As(2) atoms to form LiAs4 tetrahedra that share corners with two equivalent Li(2)As4 tetrahedra, corners with two equivalent Li(4)As4 tetrahedra, corners with two equivalent Li(7)As4 tetrahedra, corners with four equivalent Li(5)As4 tetrahedra, corners with six equivalent Li(3)As4 tetrahedra,  an edgeedge with one Li(4)As4 tetrahedra,  an edgeedge with one Mn(1)As4 tetrahedra, edges with two equivalent Li(1)As4 tetrahedra, and edges with two equivalent Li(2)As4 tetrahedra. In the seventh Li site, Li(7) is bonded to two equivalent As(1) and two equivalent As(3) atoms to form distorted LiAs4 tetrahedra that share corners with two equivalent Li(1)As4 tetrahedra, corners with two equivalent Li(6)As4 tetrahedra, corners with two equivalent Mn(1)As4 tetrahedra, corners with four equivalent Li(3)As4 tetrahedra, corners with six equivalent Li(5)As4 tetrahedra,  an edgeedge with one Li(4)As4 tetrahedra,  an edgeedge with one Mn(1)As4 tetrahedra, edges with two equivalent Li(1)As4 tetrahedra, and edges with two equivalent Li(2)As4 tetrahedra. Mn(1) is bonded to two equivalent As(1) and two equivalent As(3) atoms to form MnAs4 tetrahedra that share corners with two equivalent Li(4)As4 tetrahedra, corners with two equivalent Li(5)As4 tetrahedra, corners with two equivalent Li(7)As4 tetrahedra, corners with four equivalent Li(2)As4 tetrahedra, corners with six equivalent Li(1)As4 tetrahedra,  an edgeedge with one Li(6)As4 tetrahedra,  an edgeedge with one Li(7)As4 tetrahedra, edges with two equivalent Li(3)As4 tetrahedra, and edges with two equivalent Li(5)As4 tetrahedra. There are three inequivalent As sites. In the first As site, As(1) is bonded in a body-centered cubic geometry to one Li(1), one Li(2), one Li(3), one Li(4), one Li(5), one Li(6), one Li(7), and one Mn(1) atom. In the second As site, As(2) is bonded in a body-centered cubic geometry to one Li(1), one Li(4), one Li(5), one Li(6), two equivalent Li(2), and two equivalent Li(3) atoms. In the third As site, As(3) is bonded in a body-centered cubic geometry to one Li(2), one Li(3), one Li(7), two equivalent Li(1), two equivalent Li(5), and one Mn(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Li11MnAs6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   14.174
_cell_length_b   13.529
_cell_length_c   7.366
_cell_angle_alpha   79.484
_cell_angle_beta   69.790
_cell_angle_gamma   30.725
_symmetry_Int_Tables_number   1
_cell_volume   657.648
_cell_formula_units_Z   2
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  0.720  0.447  0.036  1.0
  Li  Li1  1  0.202  0.965  0.547  1.0
  Li  Li2  1  0.966  0.204  0.286  1.0
  Li  Li3  1  0.285  0.048  0.964  1.0
  Li  Li4  1  0.046  0.284  0.706  1.0
  Li  Li5  1  0.367  0.133  0.367  1.0
  Li  Li6  1  0.455  0.715  0.794  1.0
  Li  Li7  1  0.132  0.368  0.132  1.0
  Li  Li8  1  0.803  0.530  0.454  1.0
  Li  Li9  1  0.454  0.214  0.803  1.0
  Li  Li10  1  0.535  0.795  0.214  1.0
  Li  Li11  1  0.214  0.456  0.535  1.0
  Li  Li12  1  0.547  0.286  0.202  1.0
  Li  Li13  1  0.619  0.881  0.619  1.0
  Li  Li14  1  0.964  0.703  0.285  1.0
  Li  Li15  1  0.706  0.964  0.046  1.0
  Li  Li16  1  0.036  0.796  0.720  1.0
  Li  Li17  1  0.794  0.036  0.455  1.0
  Li  Li18  1  0.117  0.883  0.117  1.0
  Li  Li19  1  0.882  0.118  0.882  1.0
  Li  Li20  1  0.286  0.544  0.966  1.0
  Li  Li21  1  0.369  0.631  0.369  1.0
  Mn  Mn22  1  0.876  0.624  0.876  1.0
  Mn  Mn23  1  0.626  0.374  0.626  1.0
  As  As24  1  0.513  0.488  0.958  1.0
  As  As25  1  0.958  0.042  0.513  1.0
  As  As26  1  0.089  0.080  0.916  1.0
  As  As27  1  0.170  0.161  0.334  1.0
  As  As28  1  0.585  0.563  0.438  1.0
  As  As29  1  0.208  0.292  0.762  1.0
  As  As30  1  0.334  0.334  0.170  1.0
  As  As31  1  0.687  0.665  0.837  1.0
  As  As32  1  0.762  0.737  0.208  1.0
  As  As33  1  0.438  0.413  0.585  1.0
  As  As34  1  0.837  0.812  0.687  1.0
  As  As35  1  0.916  0.916  0.089  1.0
[/CIF]
.