data_Na2AsRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.82
_cell_length_b   2.82
_cell_length_c   9.44
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2AsRh
_chemical_formula_sum   'Na2 As1 Rh1'
_cell_volume   74.87
_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
  Na  Na1  1  0.41  0.41  0.39  1.0
  Na  Na2  1  0.41  0.41  0.05  1.0
  As  As0  1  0.0  0.0  0.0  1.0
  Rh  Rh3  1  0.0  0.0  0.72  1.0

data_Na2AsRh
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.98
_cell_length_b   3.98
_cell_length_c   9.44
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Na2AsRh
_chemical_formula_sum   'Na4 As2 Rh2'
_cell_volume   149.74
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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
  Na  Na0  2  0.41  0.0  0.05  1.0
  Na  Na1  2  0.41  0.0  0.39  1.0
  As  As2  2  0.0  0.0  0.0  1.0
  Rh  Rh3  2  0.0  0.0  0.72  1.0

Na Na As Rh
Na2RhAs crystallizes in the monoclinic Cm space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded in a 8-coordinate geometry to one Na(2), four equivalent Na(1), and three equivalent Rh(1) atoms. The Na(1)-Na(2) bond length is 3.15 Å. All Na(1)-Na(1) bond lengths are 2.82 Å. There is one shorter (3.54 Å) and two longer (3.74 Å) Na(1)-Rh(1) bond lengths. In the second Na site, Na(2) is bonded in a 4-coordinate geometry to one Na(1) and four equivalent As(1) atoms. There are a spread of Na(2)-As(1) bond distances ranging from 1.70-2.41 Å. Rh(1) is bonded in a 6-coordinate geometry to three equivalent Na(1), four equivalent Rh(1), and one As(1) atom. All Rh(1)-Rh(1) bond lengths are 2.82 Å. The Rh(1)-As(1) bond length is 2.66 Å. As(1) is bonded in a 5-coordinate geometry to four equivalent Na(2) and one Rh(1) atom.