data_Ca2YCr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.58
_cell_length_b   3.58
_cell_length_c   9.17
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ca2YCr
_chemical_formula_sum   'Ca2 Y1 Cr1'
_cell_volume   117.65
_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  0.0  1.0
  Ca  Ca1  1  0.79  0.79  0.88  1.0
  Y  Y3  1  0.79  0.79  0.25  1.0
  Cr  Cr2  1  0.0  0.0  0.79  1.0

data_Ca2YCr
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.07
_cell_length_b   5.07
_cell_length_c   9.17
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Ca2YCr
_chemical_formula_sum   'Ca4 Y2 Cr2'
_cell_volume   235.3
_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
  Ca  Ca1  2  0.29  0.5  0.88  1.0
  Y  Y2  2  0.29  0.5  0.25  1.0
  Cr  Cr3  2  0.0  0.0  0.79  1.0

Ca Ca Y Cr
Ca2YCr crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Ca2YCr clusters. There are two inequivalent Ca sites. In the first Ca site, Ca(1) is bonded in a 3-coordinate geometry to one Ca(2), one Y(1), and one Cr(1) atom. The Ca(1)-Ca(2) bond length is 1.56 Å. The Ca(1)-Y(1) bond length is 2.52 Å. The Ca(1)-Cr(1) bond length is 1.97 Å. In the second Ca site, Ca(2) is bonded in a distorted single-bond geometry to one Ca(1) and one Cr(1) atom. The Ca(2)-Cr(1) bond length is 1.34 Å. Y(1) is bonded in a single-bond geometry to one Ca(1) atom. Cr(1) is bonded in a distorted single-bond geometry to one Ca(1) and one Ca(2) atom.