The structure described by Cs2MgCl4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 8-coordinate geometry to one Cl(2), three equivalent Cl(3), and four equivalent Cl(1) atoms. In the second Cs site, Cs(2) is bonded in a 9-coordinate geometry to two equivalent Cl(3), three equivalent Cl(2), and four equivalent Cl(1) atoms. Mg(1) is bonded in a tetrahedral geometry to one Cl(2), one Cl(3), and two equivalent Cl(1) atoms. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a distorted single-bond geometry to two equivalent Cs(1), two equivalent Cs(2), and one Mg(1) atom. In the second Cl site, Cl(2) is bonded in a distorted single-bond geometry to one Cs(1), three equivalent Cs(2), and one Mg(1) atom. In the third Cl site, Cl(3) is bonded in a distorted single-bond geometry to two equivalent Cs(2), three equivalent Cs(1), and one Mg(1) atom. is represented by the CIF file [CIF]
data_Cs2MgCl4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.474
_cell_length_b   9.834
_cell_length_c   13.321
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   979.042
_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
  Cs  Cs0  1  0.750  0.366  0.414  1.0
  Cs  Cs1  1  0.250  0.634  0.586  1.0
  Cs  Cs2  1  0.750  0.866  0.086  1.0
  Cs  Cs3  1  0.750  0.019  0.679  1.0
  Cs  Cs4  1  0.750  0.519  0.821  1.0
  Cs  Cs5  1  0.250  0.481  0.179  1.0
  Cs  Cs6  1  0.250  0.134  0.914  1.0
  Cs  Cs7  1  0.250  0.981  0.321  1.0
  Mg  Mg8  1  0.250  0.229  0.577  1.0
  Mg  Mg9  1  0.750  0.271  0.077  1.0
  Mg  Mg10  1  0.750  0.771  0.423  1.0
  Mg  Mg11  1  0.250  0.729  0.923  1.0
  Cl  Cl12  1  0.502  0.822  0.848  1.0
  Cl  Cl13  1  0.250  0.493  0.910  1.0
  Cl  Cl14  1  0.502  0.322  0.652  1.0
  Cl  Cl15  1  0.750  0.007  0.410  1.0
  Cl  Cl16  1  0.250  0.814  0.086  1.0
  Cl  Cl17  1  0.498  0.678  0.348  1.0
  Cl  Cl18  1  0.250  0.314  0.414  1.0
  Cl  Cl19  1  0.750  0.507  0.090  1.0
  Cl  Cl20  1  0.498  0.178  0.152  1.0
  Cl  Cl21  1  0.998  0.822  0.848  1.0
  Cl  Cl22  1  0.998  0.322  0.652  1.0
  Cl  Cl23  1  0.002  0.678  0.348  1.0
  Cl  Cl24  1  0.750  0.686  0.586  1.0
  Cl  Cl25  1  0.002  0.178  0.152  1.0
  Cl  Cl26  1  0.250  0.993  0.590  1.0
  Cl  Cl27  1  0.750  0.186  0.914  1.0
[/CIF]
.
The structure described by Cs2MgCl4 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Cs sites. In the first Cs site, Cs(1) is bonded in a 8-coordinate geometry to one Cl(2), three equivalent Cl(3), and four equivalent Cl(1) atoms. In the second Cs site, Cs(2) is bonded in a 9-coordinate geometry to two equivalent Cl(3), three equivalent Cl(2), and four equivalent Cl(1) atoms. Mg(1) is bonded in a tetrahedral geometry to one Cl(2), one Cl(3), and two equivalent Cl(1) atoms. There are three inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a distorted single-bond geometry to two equivalent Cs(1), two equivalent Cs(2), and one Mg(1) atom. In the second Cl site, Cl(2) is bonded in a distorted single-bond geometry to one Cs(1), three equivalent Cs(2), and one Mg(1) atom. In the third Cl site, Cl(3) is bonded in a distorted single-bond geometry to two equivalent Cs(2), three equivalent Cs(1), and one Mg(1) atom. is represented by the CIF file [CIF]
data_Cs2MgCl4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.474
_cell_length_b   9.834
_cell_length_c   13.321
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   979.042
_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
  Cs  Cs0  1  0.750  0.366  0.414  1.0
  Cs  Cs1  1  0.250  0.634  0.586  1.0
  Cs  Cs2  1  0.750  0.866  0.086  1.0
  Cs  Cs3  1  0.750  0.019  0.679  1.0
  Cs  Cs4  1  0.750  0.519  0.821  1.0
  Cs  Cs5  1  0.250  0.481  0.179  1.0
  Cs  Cs6  1  0.250  0.134  0.914  1.0
  Cs  Cs7  1  0.250  0.981  0.321  1.0
  Mg  Mg8  1  0.250  0.229  0.577  1.0
  Mg  Mg9  1  0.750  0.271  0.077  1.0
  Mg  Mg10  1  0.750  0.771  0.423  1.0
  Mg  Mg11  1  0.250  0.729  0.923  1.0
  Cl  Cl12  1  0.502  0.822  0.848  1.0
  Cl  Cl13  1  0.250  0.493  0.910  1.0
  Cl  Cl14  1  0.502  0.322  0.652  1.0
  Cl  Cl15  1  0.750  0.007  0.410  1.0
  Cl  Cl16  1  0.250  0.814  0.086  1.0
  Cl  Cl17  1  0.498  0.678  0.348  1.0
  Cl  Cl18  1  0.250  0.314  0.414  1.0
  Cl  Cl19  1  0.750  0.507  0.090  1.0
  Cl  Cl20  1  0.498  0.178  0.152  1.0
  Cl  Cl21  1  0.998  0.822  0.848  1.0
  Cl  Cl22  1  0.998  0.322  0.652  1.0
  Cl  Cl23  1  0.002  0.678  0.348  1.0
  Cl  Cl24  1  0.750  0.686  0.586  1.0
  Cl  Cl25  1  0.002  0.178  0.152  1.0
  Cl  Cl26  1  0.250  0.993  0.590  1.0
  Cl  Cl27  1  0.750  0.186  0.914  1.0
[/CIF]
.