data_Na2SiAs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.49
_cell_length_b   4.04
_cell_length_c   5.62
_cell_angle_alpha   90.0
_cell_angle_beta   108.72
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2SiAs
_chemical_formula_sum   'Na2 Si1 As1'
_cell_volume   96.46
_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  0.98  0.0  0.31  1.0
  Na  Na2  1  0.79  0.02  0.67  1.0
  Si  Si3  1  0.13  0.0  0.74  1.0
  As  As0  1  0.13  0.02  0.26  1.0

data_Na2SiAs
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.04
_cell_length_b   4.49
_cell_length_c   5.62
_cell_angle_alpha   108.72
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2SiAs
_chemical_formula_sum   'Na2 Si1 As1'
_cell_volume   96.46
_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  Na0  1  0.0  0.02  0.69  1.0
  Na  Na1  1  0.98  0.21  0.33  1.0
  Si  Si2  1  0.0  0.87  0.26  1.0
  As  As3  1  0.98  0.87  0.74  1.0

Na Na Si As
NaSiNaAs crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one sodium arsanide molecule and one sodium silanide molecule.