data_CaAs2Rh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.39
_cell_length_b   5.39
_cell_length_c   5.39
_cell_angle_alpha   136.07
_cell_angle_beta   136.07
_cell_angle_gamma   63.87
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CaAs2Rh
_chemical_formula_sum   'Ca1 As2 Rh1'
_cell_volume   74.48
_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
  Ca  Ca2  1  0.0  0.0  0.0  1.0
  As  As0  1  0.0  0.0  0.58  1.0
  As  As1  1  0.0  0.02  0.29  1.0
  Rh  Rh3  1  0.02  0.0  0.29  1.0

data_CaAs2Rh
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.71
_cell_length_b   5.71
_cell_length_c   5.39
_cell_angle_alpha   90.0
_cell_angle_beta   121.93
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   CaAs2Rh
_chemical_formula_sum   'Ca2 As4 Rh2'
_cell_volume   148.97
_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
  Ca  Ca0  2  0.0  0.0  0.0  1.0
  As  As1  2  0.22  0.5  0.73  1.0
  As  As2  2  0.42  0.0  0.42  1.0
  Rh  Rh3  2  0.22  0.5  0.73  1.0

Ca As As Rh
CaRhAs2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one CaRhAs2 cluster. Ca(1) is bonded in a 3-coordinate geometry to one Rh(1), one As(1), and one As(2) atom. The Ca(1)-Rh(1) bond length is 1.49 Å. The Ca(1)-As(1) bond length is 2.28 Å. The Ca(1)-As(2) bond length is 1.49 Å. Rh(1) is bonded in a single-bond geometry to one Ca(1) and one As(2) atom. The Rh(1)-As(2) bond length is 0.10 Å. There are two inequivalent As sites. In the first As site, As(1) is bonded in a distorted single-bond geometry to one Ca(1) atom. In the second As site, As(2) is bonded in a single-bond geometry to one Ca(1) and one Rh(1) atom.