The compound described by MgSmF4 crystallizes in the orthorhombic Cmcm space group. Mg(1) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms to form distorted corner-sharing MgF6 octahedra. The corner-sharing octahedral tilt angles range from 0-28°. Sm(1) is bonded in a 6-coordinate geometry to six equivalent F(2) atoms. There are three inequivalent F sites. In the first F site, F(1) is bonded in a linear geometry to two equivalent Mg(1) atoms. In the second F site, F(2) is bonded to one Mg(1) and three equivalent Sm(1) atoms to form a mixture of edge and corner-sharing FSm3Mg tetrahedra. In the third F site, F(3) is bonded in a bent 150 degrees geometry to two equivalent Mg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SmMgF4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.828
_cell_length_b   5.800
_cell_length_c   8.056
_cell_angle_alpha   90.000
_cell_angle_beta   103.744
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   173.735
_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
  Sm  Sm0  1  0.679  0.250  0.357  1.0
  Sm  Sm1  1  0.321  0.750  0.643  1.0
  Mg  Mg2  1  0.080  0.750  0.159  1.0
  Mg  Mg3  1  0.920  0.250  0.841  1.0
  F  F4  1  0.000  0.000  0.000  1.0
  F  F5  1  0.000  0.500  0.000  1.0
  F  F6  1  0.193  0.511  0.385  1.0
  F  F7  1  0.807  0.489  0.615  1.0
  F  F8  1  0.390  0.250  0.779  1.0
  F  F9  1  0.610  0.750  0.221  1.0
  F  F10  1  0.193  0.989  0.385  1.0
  F  F11  1  0.807  0.011  0.615  1.0
[/CIF]
.
The compound described by MgSmF4 crystallizes in the orthorhombic Cmcm space group. Mg(1) is bonded to two equivalent F(1), two equivalent F(2), and two equivalent F(3) atoms to form distorted corner-sharing MgF6 octahedra. The corner-sharing octahedral tilt angles range from 0-28°. Sm(1) is bonded in a 6-coordinate geometry to six equivalent F(2) atoms. There are three inequivalent F sites. In the first F site, F(1) is bonded in a linear geometry to two equivalent Mg(1) atoms. In the second F site, F(2) is bonded to one Mg(1) and three equivalent Sm(1) atoms to form a mixture of edge and corner-sharing FSm3Mg tetrahedra. In the third F site, F(3) is bonded in a bent 150 degrees geometry to two equivalent Mg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_SmMgF4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.828
_cell_length_b   5.800
_cell_length_c   8.056
_cell_angle_alpha   90.000
_cell_angle_beta   103.744
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   173.735
_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
  Sm  Sm0  1  0.679  0.250  0.357  1.0
  Sm  Sm1  1  0.321  0.750  0.643  1.0
  Mg  Mg2  1  0.080  0.750  0.159  1.0
  Mg  Mg3  1  0.920  0.250  0.841  1.0
  F  F4  1  0.000  0.000  0.000  1.0
  F  F5  1  0.000  0.500  0.000  1.0
  F  F6  1  0.193  0.511  0.385  1.0
  F  F7  1  0.807  0.489  0.615  1.0
  F  F8  1  0.390  0.250  0.779  1.0
  F  F9  1  0.610  0.750  0.221  1.0
  F  F10  1  0.193  0.989  0.385  1.0
  F  F11  1  0.807  0.011  0.615  1.0
[/CIF]
.