data_SrB2As
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.23
_cell_length_b   4.23
_cell_length_c   3.77
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrB2As
_chemical_formula_sum   'Sr1 B2 As1'
_cell_volume   67.55
_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
  Sr  Sr3  1  0.12  0.12  0.0  1.0
  B  B1  1  0.0  0.12  0.88  1.0
  B  B2  1  0.12  0.0  0.88  1.0
  As  As0  1  0.0  0.0  0.0  1.0

data_SrB2As
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.99
_cell_length_b   5.99
_cell_length_c   3.77
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SrB2As
_chemical_formula_sum   'Sr2 B4 As2'
_cell_volume   135.09
_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
  Sr  Sr0  2  0.12  0.0  -0.0  1.0
  B  B1  4  0.06  0.06  0.88  1.0
  As  As2  2  0.0  0.0  0.0  1.0

Sr B B As
SrB2As is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two SrB2As clusters. Sr(1) is bonded in a 3-coordinate geometry to two equivalent B(1) and one As(1) atom. Both Sr(1)-B(1) bond lengths are 0.66 Å. The Sr(1)-As(1) bond length is 0.70 Å. B(1) is bonded in a 3-coordinate geometry to one Sr(1), one B(1), and one As(1) atom. The B(1)-B(1) bond length is 0.70 Å. The B(1)-As(1) bond length is 0.66 Å. As(1) is bonded in a 3-coordinate geometry to one Sr(1) and two equivalent B(1) atoms.