data_CaZnRh2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.3
_cell_length_b   3.3
_cell_length_c   6.51
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CaZnRh2
_chemical_formula_sum   'Ca1 Zn1 Rh2'
_cell_volume   71.04
_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  Ca0  1  0.0  0.0  0.97  1.0
  Zn  Zn3  1  0.65  0.65  0.81  1.0
  Rh  Rh1  1  0.65  0.65  0.18  1.0
  Rh  Rh2  1  0.0  0.0  0.79  1.0

data_CaZnRh2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.67
_cell_length_b   4.67
_cell_length_c   6.51
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   CaZnRh2
_chemical_formula_sum   'Ca2 Zn2 Rh4'
_cell_volume   142.07
_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  0.97  1.0
  Zn  Zn1  2  0.15  0.5  0.81  1.0
  Rh  Rh2  2  0.0  0.0  0.79  1.0
  Rh  Rh3  2  0.15  0.5  0.18  1.0

Ca Zn Rh Rh
Ca Zn Rh Rh 0 3 o o o 0 1 - - o 0 2 - - + 1 3 + + o 1 2 o o + 
CaRh2Zn crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two CaRh2Zn clusters. Ca(1) is bonded in a distorted single-bond geometry to one Rh(1) and one Rh(2) atom. The Ca(1)-Rh(1) bond length is 2.14 Å. The Ca(1)-Rh(2) bond length is 1.17 Å. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 1-coordinate geometry to one Ca(1) atom. In the second Rh site, Rh(2) is bonded in a distorted single-bond geometry to one Ca(1) and one Zn(1) atom. The Rh(2)-Zn(1) bond length is 1.63 Å. Zn(1) is bonded in a 1-coordinate geometry to one Rh(2) atom.