The crystal structure described by SmNbO4 crystallizes in the monoclinic C2/c space group. Sm(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. Nb(1) is bonded in a 4-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Sm(1) and two equivalent Nb(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Sm(1) and one Nb(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_SmNbO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.167
_cell_length_b   5.422
_cell_length_c   6.671
_cell_angle_alpha   112.211
_cell_angle_beta   110.939
_cell_angle_gamma   94.211
_symmetry_Int_Tables_number   1
_cell_volume   156.829
_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  0.379  0.629  0.758  1.0
  Sm  Sm1  1  0.621  0.371  0.242  1.0
  Nb  Nb2  1  0.856  0.106  0.712  1.0
  Nb  Nb3  1  0.144  0.894  0.288  1.0
  O  O4  1  0.987  0.788  0.564  1.0
  O  O5  1  0.577  0.276  0.564  1.0
  O  O6  1  0.013  0.212  0.436  1.0
  O  O7  1  0.423  0.724  0.436  1.0
  O  O8  1  0.205  0.365  0.918  1.0
  O  O9  1  0.713  0.053  0.918  1.0
  O  O10  1  0.795  0.635  0.082  1.0
  O  O11  1  0.287  0.947  0.082  1.0
[/CIF]
.
The crystal structure described by SmNbO4 crystallizes in the monoclinic C2/c space group. Sm(1) is bonded in a 8-coordinate geometry to four equivalent O(1) and four equivalent O(2) atoms. Nb(1) is bonded in a 4-coordinate geometry to two equivalent O(2) and four equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 4-coordinate geometry to two equivalent Sm(1) and two equivalent Nb(1) atoms. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Sm(1) and one Nb(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_SmNbO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.167
_cell_length_b   5.422
_cell_length_c   6.671
_cell_angle_alpha   112.211
_cell_angle_beta   110.939
_cell_angle_gamma   94.211
_symmetry_Int_Tables_number   1
_cell_volume   156.829
_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  0.379  0.629  0.758  1.0
  Sm  Sm1  1  0.621  0.371  0.242  1.0
  Nb  Nb2  1  0.856  0.106  0.712  1.0
  Nb  Nb3  1  0.144  0.894  0.288  1.0
  O  O4  1  0.987  0.788  0.564  1.0
  O  O5  1  0.577  0.276  0.564  1.0
  O  O6  1  0.013  0.212  0.436  1.0
  O  O7  1  0.423  0.724  0.436  1.0
  O  O8  1  0.205  0.365  0.918  1.0
  O  O9  1  0.713  0.053  0.918  1.0
  O  O10  1  0.795  0.635  0.082  1.0
  O  O11  1  0.287  0.947  0.082  1.0
[/CIF]
.