data_Sr2CaTi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.39
_cell_length_b   5.39
_cell_length_c   5.38
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2CaTi
_chemical_formula_sum   'Sr2 Ca1 Ti1'
_cell_volume   156.15
_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  Sr1  1  0.0  0.69  0.69  1.0
  Sr  Sr2  1  0.69  0.0  0.69  1.0
  Ca  Ca0  1  0.0  0.0  0.0  1.0
  Ti  Ti3  1  0.69  0.69  0.0  1.0

data_Sr2CaTi
_symmetry_space_group_name_H-M   Cm
_cell_length_a   7.62
_cell_length_b   7.62
_cell_length_c   5.38
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Sr2CaTi
_chemical_formula_sum   'Sr4 Ca2 Ti2'
_cell_volume   312.3
_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
  Sr  Sr0  4  0.35  0.35  0.69  1.0
  Ca  Ca1  2  0.0  0.0  0.0  1.0
  Ti  Ti2  2  0.19  0.5  0.0  1.0

Sr Sr Ca Ti
Sr2CaTi is alpha Po structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Sr2CaTi clusters. Sr(1) is bonded in a 1-coordinate geometry to one Ca(1) and one Ti(1) atom. The Sr(1)-Ca(1) bond length is 2.35 Å. The Sr(1)-Ti(1) bond length is 2.35 Å. Ca(1) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and one Ti(1) atom. The Ca(1)-Ti(1) bond length is 2.33 Å. Ti(1) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and one Ca(1) atom.