data_Sr2Co
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.41
_cell_length_b   10.41
_cell_length_c   10.41
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Sr2Co
_chemical_formula_sum   'Sr16 Co8'
_cell_volume   798.56
_cell_formula_units_Z   8
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  Sr8  1  0.52  0.84  0.52  1.0
  Sr  Sr9  1  0.84  0.84  0.84  1.0
  Sr  Sr10  1  0.84  0.52  0.52  1.0
  Sr  Sr11  1  0.52  0.52  0.84  1.0
  Sr  Sr12  1  0.05  0.91  0.05  1.0
  Sr  Sr13  1  0.05  0.05  0.18  1.0
  Sr  Sr14  1  0.91  0.05  0.05  1.0
  Sr  Sr15  1  0.18  0.05  0.05  1.0
  Sr  Sr16  1  0.05  0.05  0.91  1.0
  Sr  Sr17  1  0.05  0.18  0.05  1.0
  Sr  Sr18  1  0.36  0.5  0.36  1.0
  Sr  Sr19  1  0.36  0.36  0.22  1.0
  Sr  Sr20  1  0.5  0.36  0.36  1.0
  Sr  Sr21  1  0.22  0.36  0.36  1.0
  Sr  Sr22  1  0.36  0.36  0.5  1.0
  Sr  Sr23  1  0.36  0.22  0.36  1.0
  Co  Co0  1  0.83  0.83  0.53  1.0
  Co  Co1  1  0.53  0.83  0.83  1.0
  Co  Co2  1  0.53  0.53  0.53  1.0
  Co  Co3  1  0.83  0.53  0.83  1.0
  Co  Co4  1  0.21  0.21  0.88  1.0
  Co  Co5  1  0.88  0.21  0.21  1.0
  Co  Co6  1  0.88  0.88  0.88  1.0
  Co  Co7  1  0.21  0.88  0.21  1.0

data_Sr2Co
_symmetry_space_group_name_H-M   R3m
_cell_length_a   10.41
_cell_length_b   10.41
_cell_length_c   25.51
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Sr2Co
_chemical_formula_sum   'Sr48 Co24'
_cell_volume   2395.69
_cell_formula_units_Z   24
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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  9  0.05  0.09  0.91  1.0
  Sr  Sr1  9  0.05  0.09  0.59  1.0
  Sr  Sr2  9  0.09  0.05  0.0  1.0
  Sr  Sr3  9  0.09  0.05  0.68  1.0
  Sr  Sr4  9  0.11  0.21  0.37  1.0
  Sr  Sr5  3  0.0  0.0  0.16  1.0
  Co  Co6  9  0.2  0.1  0.27  1.0
  Co  Co7  9  0.22  0.44  0.56  1.0
  Co  Co8  3  0.0  0.0  0.12  1.0
  Co  Co9  3  0.0  0.0  0.47  1.0

Sr Sr Sr Sr Sr Sr Sr Sr Sr Sr Sr Sr Sr Sr Sr Sr Co Co Co Co Co Co Co Co
Sr2Co1 crystallizes in the trigonal R3m space group. There are six inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 3-coordinate geometry to one Sr(6), one Co(2), and two equivalent Co(1) atoms. The Sr(1)-Sr(6) bond length is 3.31 Å. The Sr(1)-Co(2) bond length is 3.12 Å. Both Sr(1)-Co(1) bond lengths are 3.21 Å. In the second Sr site, Sr(2) is bonded in a distorted single-bond geometry to one Co(4) and three equivalent Co(1) atoms. The Sr(2)-Co(4) bond length is 0.91 Å. All Sr(2)-Co(1) bond lengths are 3.32 Å. In the third Sr site, Sr(3) is bonded in a 6-coordinate geometry to two equivalent Sr(3), two equivalent Sr(4), one Co(3), and one Co(4) atom. Both Sr(3)-Sr(3) bond lengths are 1.45 Å. Both Sr(3)-Sr(4) bond lengths are 2.51 Å. The Sr(3)-Co(3) bond length is 2.88 Å. The Sr(3)-Co(4) bond length is 3.23 Å. In the fourth Sr site, Sr(4) is bonded in a 4-coordinate geometry to two equivalent Sr(3), two equivalent Sr(4), one Co(1), and two equivalent Co(3) atoms. Both Sr(4)-Sr(4) bond lengths are 1.45 Å. The Sr(4)-Co(1) bond length is 3.45 Å. Both Sr(4)-Co(3) bond lengths are 1.78 Å. In the fifth Sr site, Sr(5) is bonded in a 3-coordinate geometry to two equivalent Sr(5), two equivalent Sr(6), one Co(2), and one Co(3) atom. Both Sr(5)-Sr(5) bond lengths are 1.45 Å. Both Sr(5)-Sr(6) bond lengths are 2.51 Å. The Sr(5)-Co(2) bond length is 3.23 Å. The Sr(5)-Co(3) bond length is 3.21 Å. In the sixth Sr site, Sr(6) is bonded in a 5-coordinate geometry to one Sr(1), two equivalent Sr(5), and two equivalent Sr(6) atoms. Both Sr(6)-Sr(6) bond lengths are 1.45 Å. There are four inequivalent Co sites. In the first Co site, Co(1) is bonded in a 6-coordinate geometry to one Sr(2), one Sr(4), two equivalent Sr(1), and two equivalent Co(1) atoms. Both Co(1)-Co(1) bond lengths are 3.11 Å. In the second Co site, Co(2) is bonded in a 6-coordinate geometry to three equivalent Sr(1) and three equivalent Sr(5) atoms. In the third Co site, Co(3) is bonded in a 4-coordinate geometry to one Sr(3), one Sr(5), and two equivalent Sr(4) atoms. In the fourth Co site, Co(4) is bonded in a single-bond geometry to one Sr(2) and three equivalent Sr(3) atoms.