The structure described by SmSO4 crystallizes in the orthorhombic Pnma space group. Sm(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), and six equivalent O(3) atoms. S(1) is bonded in a tetrahedral geometry to one O(1), one O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Sm(1) and one S(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Sm(1) and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to three equivalent Sm(1) and one S(1) atom. is represented by the CIF file [CIF]
data_SmSO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.885
_cell_length_b   7.997
_cell_length_c   6.741
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   317.235
_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
  Sm  Sm0  1  0.750  0.830  0.348  1.0
  Sm  Sm1  1  0.250  0.170  0.652  1.0
  Sm  Sm2  1  0.250  0.670  0.848  1.0
  Sm  Sm3  1  0.750  0.330  0.152  1.0
  S  S4  1  0.750  0.945  0.827  1.0
  S  S5  1  0.250  0.055  0.173  1.0
  S  S6  1  0.250  0.555  0.327  1.0
  S  S7  1  0.750  0.445  0.673  1.0
  O  O8  1  0.750  0.617  0.592  1.0
  O  O9  1  0.250  0.383  0.408  1.0
  O  O10  1  0.250  0.883  0.092  1.0
  O  O11  1  0.750  0.117  0.908  1.0
  O  O12  1  0.750  0.818  0.988  1.0
  O  O13  1  0.250  0.182  0.012  1.0
  O  O14  1  0.250  0.682  0.488  1.0
  O  O15  1  0.750  0.318  0.512  1.0
  O  O16  1  0.961  0.920  0.700  1.0
  O  O17  1  0.039  0.080  0.300  1.0
  O  O18  1  0.039  0.580  0.200  1.0
  O  O19  1  0.461  0.080  0.300  1.0
  O  O20  1  0.961  0.420  0.800  1.0
  O  O21  1  0.539  0.920  0.700  1.0
  O  O22  1  0.539  0.420  0.800  1.0
  O  O23  1  0.461  0.580  0.200  1.0
[/CIF]
.
The structure described by SmSO4 crystallizes in the orthorhombic Pnma space group. Sm(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), and six equivalent O(3) atoms. S(1) is bonded in a tetrahedral geometry to one O(1), one O(2), and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Sm(1) and one S(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Sm(1) and one S(1) atom. In the third O site, O(3) is bonded in a distorted single-bond geometry to three equivalent Sm(1) and one S(1) atom. is represented by the CIF file [CIF]
data_SmSO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.885
_cell_length_b   7.997
_cell_length_c   6.741
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   317.235
_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
  Sm  Sm0  1  0.750  0.830  0.348  1.0
  Sm  Sm1  1  0.250  0.170  0.652  1.0
  Sm  Sm2  1  0.250  0.670  0.848  1.0
  Sm  Sm3  1  0.750  0.330  0.152  1.0
  S  S4  1  0.750  0.945  0.827  1.0
  S  S5  1  0.250  0.055  0.173  1.0
  S  S6  1  0.250  0.555  0.327  1.0
  S  S7  1  0.750  0.445  0.673  1.0
  O  O8  1  0.750  0.617  0.592  1.0
  O  O9  1  0.250  0.383  0.408  1.0
  O  O10  1  0.250  0.883  0.092  1.0
  O  O11  1  0.750  0.117  0.908  1.0
  O  O12  1  0.750  0.818  0.988  1.0
  O  O13  1  0.250  0.182  0.012  1.0
  O  O14  1  0.250  0.682  0.488  1.0
  O  O15  1  0.750  0.318  0.512  1.0
  O  O16  1  0.961  0.920  0.700  1.0
  O  O17  1  0.039  0.080  0.300  1.0
  O  O18  1  0.039  0.580  0.200  1.0
  O  O19  1  0.461  0.080  0.300  1.0
  O  O20  1  0.961  0.420  0.800  1.0
  O  O21  1  0.539  0.920  0.700  1.0
  O  O22  1  0.539  0.420  0.800  1.0
  O  O23  1  0.461  0.580  0.200  1.0
[/CIF]
.