The material structure described by MgLa2S4 is Spinel-like structured and crystallizes in the orthorhombic Pnma space group. Mg(1) is bonded to one S(2), one S(3), and two equivalent S(1) atoms to form MgS4 tetrahedra that share corners with two equivalent La(1)S6 octahedra, corners with four equivalent La(2)S6 octahedra,  an edgeedge with one La(2)S6 octahedra, and edges with two equivalent La(1)S6 octahedra. The corner-sharing octahedral tilt angles range from 60-62°. There are two inequivalent La sites. In the first La site, La(1) is bonded to two equivalent S(1), two equivalent S(2), and two equivalent S(3) atoms to form LaS6 octahedra that share corners with four equivalent La(2)S6 octahedra, corners with two equivalent Mg(1)S4 tetrahedra, edges with two equivalent La(1)S6 octahedra, edges with two equivalent La(2)S6 octahedra, and edges with two equivalent Mg(1)S4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-58°. In the second La site, La(2) is bonded to one S(2), one S(3), and four equivalent S(1) atoms to form LaS6 octahedra that share corners with four equivalent La(1)S6 octahedra, corners with four equivalent La(2)S6 octahedra, corners with four equivalent Mg(1)S4 tetrahedra, edges with two equivalent La(1)S6 octahedra, and  an edgeedge with one Mg(1)S4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-58°. There are three inequivalent S sites. In the first S site, S(1) is bonded in a rectangular see-saw-like geometry to one Mg(1), one La(1), and two equivalent La(2) atoms. In the second S site, S(2) is bonded in a rectangular see-saw-like geometry to one Mg(1), one La(2), and two equivalent La(1) atoms. In the third S site, S(3) is bonded to one Mg(1), one La(2), and two equivalent La(1) atoms to form distorted corner-sharing SLa3Mg tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_La2MgS4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.671
_cell_length_b   8.403
_cell_length_c   14.292
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   801.115
_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
  La  La0  1  0.500  0.000  0.000  1.0
  La  La1  1  0.000  0.000  0.500  1.0
  La  La2  1  0.000  0.500  0.500  1.0
  La  La3  1  0.500  0.500  0.000  1.0
  La  La4  1  0.998  0.750  0.229  1.0
  La  La5  1  0.002  0.250  0.771  1.0
  La  La6  1  0.498  0.250  0.271  1.0
  La  La7  1  0.502  0.750  0.729  1.0
  Mg  Mg8  1  0.924  0.250  0.093  1.0
  Mg  Mg9  1  0.076  0.750  0.907  1.0
  Mg  Mg10  1  0.424  0.750  0.407  1.0
  Mg  Mg11  1  0.576  0.250  0.593  1.0
  S  S12  1  0.752  0.021  0.166  1.0
  S  S13  1  0.248  0.979  0.834  1.0
  S  S14  1  0.252  0.979  0.334  1.0
  S  S15  1  0.748  0.021  0.666  1.0
  S  S16  1  0.748  0.479  0.666  1.0
  S  S17  1  0.252  0.521  0.334  1.0
  S  S18  1  0.248  0.521  0.834  1.0
  S  S19  1  0.752  0.479  0.166  1.0
  S  S20  1  0.240  0.750  0.064  1.0
  S  S21  1  0.760  0.250  0.936  1.0
  S  S22  1  0.740  0.250  0.436  1.0
  S  S23  1  0.260  0.750  0.564  1.0
  S  S24  1  0.286  0.250  0.093  1.0
  S  S25  1  0.714  0.750  0.907  1.0
  S  S26  1  0.786  0.750  0.407  1.0
  S  S27  1  0.214  0.250  0.593  1.0
[/CIF]
.
The material structure described by MgLa2S4 is Spinel-like structured and crystallizes in the orthorhombic Pnma space group. Mg(1) is bonded to one S(2), one S(3), and two equivalent S(1) atoms to form MgS4 tetrahedra that share corners with two equivalent La(1)S6 octahedra, corners with four equivalent La(2)S6 octahedra,  an edgeedge with one La(2)S6 octahedra, and edges with two equivalent La(1)S6 octahedra. The corner-sharing octahedral tilt angles range from 60-62°. There are two inequivalent La sites. In the first La site, La(1) is bonded to two equivalent S(1), two equivalent S(2), and two equivalent S(3) atoms to form LaS6 octahedra that share corners with four equivalent La(2)S6 octahedra, corners with two equivalent Mg(1)S4 tetrahedra, edges with two equivalent La(1)S6 octahedra, edges with two equivalent La(2)S6 octahedra, and edges with two equivalent Mg(1)S4 tetrahedra. The corner-sharing octahedral tilt angles range from 53-58°. In the second La site, La(2) is bonded to one S(2), one S(3), and four equivalent S(1) atoms to form LaS6 octahedra that share corners with four equivalent La(1)S6 octahedra, corners with four equivalent La(2)S6 octahedra, corners with four equivalent Mg(1)S4 tetrahedra, edges with two equivalent La(1)S6 octahedra, and  an edgeedge with one Mg(1)S4 tetrahedra. The corner-sharing octahedral tilt angles range from 48-58°. There are three inequivalent S sites. In the first S site, S(1) is bonded in a rectangular see-saw-like geometry to one Mg(1), one La(1), and two equivalent La(2) atoms. In the second S site, S(2) is bonded in a rectangular see-saw-like geometry to one Mg(1), one La(2), and two equivalent La(1) atoms. In the third S site, S(3) is bonded to one Mg(1), one La(2), and two equivalent La(1) atoms to form distorted corner-sharing SLa3Mg tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_La2MgS4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.671
_cell_length_b   8.403
_cell_length_c   14.292
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   801.115
_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
  La  La0  1  0.500  0.000  0.000  1.0
  La  La1  1  0.000  0.000  0.500  1.0
  La  La2  1  0.000  0.500  0.500  1.0
  La  La3  1  0.500  0.500  0.000  1.0
  La  La4  1  0.998  0.750  0.229  1.0
  La  La5  1  0.002  0.250  0.771  1.0
  La  La6  1  0.498  0.250  0.271  1.0
  La  La7  1  0.502  0.750  0.729  1.0
  Mg  Mg8  1  0.924  0.250  0.093  1.0
  Mg  Mg9  1  0.076  0.750  0.907  1.0
  Mg  Mg10  1  0.424  0.750  0.407  1.0
  Mg  Mg11  1  0.576  0.250  0.593  1.0
  S  S12  1  0.752  0.021  0.166  1.0
  S  S13  1  0.248  0.979  0.834  1.0
  S  S14  1  0.252  0.979  0.334  1.0
  S  S15  1  0.748  0.021  0.666  1.0
  S  S16  1  0.748  0.479  0.666  1.0
  S  S17  1  0.252  0.521  0.334  1.0
  S  S18  1  0.248  0.521  0.834  1.0
  S  S19  1  0.752  0.479  0.166  1.0
  S  S20  1  0.240  0.750  0.064  1.0
  S  S21  1  0.760  0.250  0.936  1.0
  S  S22  1  0.740  0.250  0.436  1.0
  S  S23  1  0.260  0.750  0.564  1.0
  S  S24  1  0.286  0.250  0.093  1.0
  S  S25  1  0.714  0.750  0.907  1.0
  S  S26  1  0.786  0.750  0.407  1.0
  S  S27  1  0.214  0.250  0.593  1.0
[/CIF]
.