The crystal structure described by Ca crystallizes in the tetragonal I4/mcm space group. Ca(1) is bonded in a 7-coordinate geometry to seven equivalent Ca(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ca
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.660
_cell_length_b   6.232
_cell_length_c   6.232
_cell_angle_alpha   73.472
_cell_angle_beta   57.706
_cell_angle_gamma   57.706
_symmetry_Int_Tables_number   1
_cell_volume   184.858
_cell_formula_units_Z   4
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  0.171  0.159  0.500  1.0
  Ca  Ca1  1  0.829  0.841  0.500  1.0
  Ca  Ca2  1  0.329  0.500  0.841  1.0
  Ca  Ca3  1  0.671  0.500  0.159  1.0
[/CIF]
.
The crystal structure described by Ca crystallizes in the tetragonal I4/mcm space group. Ca(1) is bonded in a 7-coordinate geometry to seven equivalent Ca(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Ca
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.660
_cell_length_b   6.232
_cell_length_c   6.232
_cell_angle_alpha   73.472
_cell_angle_beta   57.706
_cell_angle_gamma   57.706
_symmetry_Int_Tables_number   1
_cell_volume   184.858
_cell_formula_units_Z   4
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  0.171  0.159  0.500  1.0
  Ca  Ca1  1  0.829  0.841  0.500  1.0
  Ca  Ca2  1  0.329  0.500  0.841  1.0
  Ca  Ca3  1  0.671  0.500  0.159  1.0
[/CIF]
.