The compound described by MgSm2Mo2(O4Cl)2 crystallizes in the monoclinic C2 space group. Mg(1) is bonded in an octahedral geometry to two equivalent O(3), two equivalent O(4), and two equivalent Cl(1) atoms. Sm(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), two equivalent O(1), two equivalent O(4), and two equivalent Cl(1) atoms. Mo(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Sm(1) and one Mo(1) atom. In the second O site, O(2) is bonded in a linear geometry to one Sm(1) and one Mo(1) atom. In the third O site, O(3) is bonded in a T-shaped geometry to one Mg(1), one Sm(1), and one Mo(1) atom. In the fourth O site, O(4) is bonded to one Mg(1), two equivalent Sm(1), and one Mo(1) atom to form distorted corner-sharing OSm2MgMo trigonal pyramids. Cl(1) is bonded in a 1-coordinate geometry to one Mg(1) and two equivalent Sm(1) atoms. is represented by the CIF file [CIF]
data_Sm2MgMo2(ClO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.554
_cell_length_b   6.554
_cell_length_c   7.282
_cell_angle_alpha   76.879
_cell_angle_beta   76.879
_cell_angle_gamma   68.071
_symmetry_Int_Tables_number   1
_cell_volume   279.018
_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
  Sm  Sm0  1  0.257  0.258  0.876  1.0
  Sm  Sm1  1  0.742  0.743  0.124  1.0
  Mg  Mg2  1  0.731  0.269  0.000  1.0
  Mo  Mo3  1  0.640  0.669  0.709  1.0
  Mo  Mo4  1  0.331  0.360  0.291  1.0
  Cl  Cl5  1  0.014  0.041  0.209  1.0
  Cl  Cl6  1  0.959  0.986  0.791  1.0
  O  O7  1  0.110  0.501  0.141  1.0
  O  O8  1  0.711  0.702  0.453  1.0
  O  O9  1  0.507  0.444  0.805  1.0
  O  O10  1  0.298  0.289  0.547  1.0
  O  O11  1  0.556  0.493  0.195  1.0
  O  O12  1  0.499  0.890  0.859  1.0
  O  O13  1  0.882  0.498  0.857  1.0
  O  O14  1  0.502  0.118  0.143  1.0
[/CIF]
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The compound described by MgSm2Mo2(O4Cl)2 crystallizes in the monoclinic C2 space group. Mg(1) is bonded in an octahedral geometry to two equivalent O(3), two equivalent O(4), and two equivalent Cl(1) atoms. Sm(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), two equivalent O(1), two equivalent O(4), and two equivalent Cl(1) atoms. Mo(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Sm(1) and one Mo(1) atom. In the second O site, O(2) is bonded in a linear geometry to one Sm(1) and one Mo(1) atom. In the third O site, O(3) is bonded in a T-shaped geometry to one Mg(1), one Sm(1), and one Mo(1) atom. In the fourth O site, O(4) is bonded to one Mg(1), two equivalent Sm(1), and one Mo(1) atom to form distorted corner-sharing OSm2MgMo trigonal pyramids. Cl(1) is bonded in a 1-coordinate geometry to one Mg(1) and two equivalent Sm(1) atoms. is represented by the CIF file [CIF]
data_Sm2MgMo2(ClO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.554
_cell_length_b   6.554
_cell_length_c   7.282
_cell_angle_alpha   76.879
_cell_angle_beta   76.879
_cell_angle_gamma   68.071
_symmetry_Int_Tables_number   1
_cell_volume   279.018
_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
  Sm  Sm0  1  0.257  0.258  0.876  1.0
  Sm  Sm1  1  0.742  0.743  0.124  1.0
  Mg  Mg2  1  0.731  0.269  0.000  1.0
  Mo  Mo3  1  0.640  0.669  0.709  1.0
  Mo  Mo4  1  0.331  0.360  0.291  1.0
  Cl  Cl5  1  0.014  0.041  0.209  1.0
  Cl  Cl6  1  0.959  0.986  0.791  1.0
  O  O7  1  0.110  0.501  0.141  1.0
  O  O8  1  0.711  0.702  0.453  1.0
  O  O9  1  0.507  0.444  0.805  1.0
  O  O10  1  0.298  0.289  0.547  1.0
  O  O11  1  0.556  0.493  0.195  1.0
  O  O12  1  0.499  0.890  0.859  1.0
  O  O13  1  0.882  0.498  0.857  1.0
  O  O14  1  0.502  0.118  0.143  1.0
[/CIF]
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