The material described by MgMnCu2SnS4 crystallizes in the orthorhombic Fmm2 space group. Mg(1) is bonded to one Sn(1), two equivalent S(1), and two equivalent S(2) atoms to form distorted MgSnS4 tetrahedra that share corners with two equivalent Mn(1)S4 tetrahedra, corners with two equivalent S(1)MgMnCu2Sn trigonal bipyramids,  an edgeedge with one Mn(1)S4 tetrahedra, and edges with four equivalent Cu(1)S4 tetrahedra. Mn(1) is bonded to two equivalent S(1) and two equivalent S(2) atoms to form distorted MnS4 tetrahedra that share corners with two equivalent Mg(1)SnS4 tetrahedra, corners with eight equivalent Cu(1)S4 tetrahedra, and  an edgeedge with one Mg(1)SnS4 tetrahedra. Cu(1) is bonded to two equivalent S(1) and two equivalent S(2) atoms to form distorted CuS4 tetrahedra that share corners with four equivalent Mn(1)S4 tetrahedra, corners with four equivalent Cu(1)S4 tetrahedra, and edges with two equivalent Mg(1)SnS4 tetrahedra. Sn(1) is bonded in a 5-coordinate geometry to one Mg(1), two equivalent S(1), and two equivalent S(2) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded to one Mg(1), one Mn(1), two equivalent Cu(1), and one Sn(1) atom to form distorted SMgMnCu2Sn trigonal bipyramids that share  a cornercorner with one Mg(1)SnS4 tetrahedra, corners with three equivalent S(1)MgMnCu2Sn trigonal bipyramids, and  an edgeedge with one S(1)MgMnCu2Sn trigonal bipyramid. In the second S site, S(2) is bonded in a 5-coordinate geometry to one Mg(1), one Mn(1), two equivalent Cu(1), and one Sn(1) atom. is represented by the CIF file [CIF]
data_MgMnCu2SnS4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.784
_cell_length_b   5.784
_cell_length_c   7.240
_cell_angle_alpha   116.105
_cell_angle_beta   116.105
_cell_angle_gamma   84.167
_symmetry_Int_Tables_number   1
_cell_volume   194.036
_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  0.258  0.258  0.515  1.0
  Mn  Mn1  1  0.995  0.995  0.990  1.0
  Cu  Cu2  1  0.748  0.248  0.495  1.0
  Cu  Cu3  1  0.248  0.748  0.495  1.0
  Sn  Sn4  1  0.527  0.527  0.055  1.0
  S  S5  1  0.915  0.915  0.260  1.0
  S  S6  1  0.346  0.346  0.260  1.0
  S  S7  1  0.088  0.627  0.715  1.0
  S  S8  1  0.627  0.088  0.715  1.0
[/CIF]
.
The material described by MgMnCu2SnS4 crystallizes in the orthorhombic Fmm2 space group. Mg(1) is bonded to one Sn(1), two equivalent S(1), and two equivalent S(2) atoms to form distorted MgSnS4 tetrahedra that share corners with two equivalent Mn(1)S4 tetrahedra, corners with two equivalent S(1)MgMnCu2Sn trigonal bipyramids,  an edgeedge with one Mn(1)S4 tetrahedra, and edges with four equivalent Cu(1)S4 tetrahedra. Mn(1) is bonded to two equivalent S(1) and two equivalent S(2) atoms to form distorted MnS4 tetrahedra that share corners with two equivalent Mg(1)SnS4 tetrahedra, corners with eight equivalent Cu(1)S4 tetrahedra, and  an edgeedge with one Mg(1)SnS4 tetrahedra. Cu(1) is bonded to two equivalent S(1) and two equivalent S(2) atoms to form distorted CuS4 tetrahedra that share corners with four equivalent Mn(1)S4 tetrahedra, corners with four equivalent Cu(1)S4 tetrahedra, and edges with two equivalent Mg(1)SnS4 tetrahedra. Sn(1) is bonded in a 5-coordinate geometry to one Mg(1), two equivalent S(1), and two equivalent S(2) atoms. There are two inequivalent S sites. In the first S site, S(1) is bonded to one Mg(1), one Mn(1), two equivalent Cu(1), and one Sn(1) atom to form distorted SMgMnCu2Sn trigonal bipyramids that share  a cornercorner with one Mg(1)SnS4 tetrahedra, corners with three equivalent S(1)MgMnCu2Sn trigonal bipyramids, and  an edgeedge with one S(1)MgMnCu2Sn trigonal bipyramid. In the second S site, S(2) is bonded in a 5-coordinate geometry to one Mg(1), one Mn(1), two equivalent Cu(1), and one Sn(1) atom. is represented by the CIF file [CIF]
data_MgMnCu2SnS4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.784
_cell_length_b   5.784
_cell_length_c   7.240
_cell_angle_alpha   116.105
_cell_angle_beta   116.105
_cell_angle_gamma   84.167
_symmetry_Int_Tables_number   1
_cell_volume   194.036
_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  0.258  0.258  0.515  1.0
  Mn  Mn1  1  0.995  0.995  0.990  1.0
  Cu  Cu2  1  0.748  0.248  0.495  1.0
  Cu  Cu3  1  0.248  0.748  0.495  1.0
  Sn  Sn4  1  0.527  0.527  0.055  1.0
  S  S5  1  0.915  0.915  0.260  1.0
  S  S6  1  0.346  0.346  0.260  1.0
  S  S7  1  0.088  0.627  0.715  1.0
  S  S8  1  0.627  0.088  0.715  1.0
[/CIF]
.