data_SrAl2Zn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.51
_cell_length_b   6.51
_cell_length_c   6.51
_cell_angle_alpha   38.52
_cell_angle_beta   38.52
_cell_angle_gamma   38.52
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrAl2Zn
_chemical_formula_sum   'Sr1 Al2 Zn1'
_cell_volume   96.09
_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  Sr2  1  0.0  0.0  0.03  1.0
  Al  Al0  1  0.0  0.0  0.27  1.0
  Al  Al1  1  0.0  0.0  0.78  1.0
  Zn  Zn3  1  0.0  0.0  0.0  1.0

data_SrAl2Zn
_symmetry_space_group_name_H-M   Cm
_cell_length_a   7.44
_cell_length_b   4.29
_cell_length_c   6.51
_cell_angle_alpha   90.0
_cell_angle_beta   112.39
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SrAl2Zn
_chemical_formula_sum   'Sr2 Al4 Zn2'
_cell_volume   192.18
_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  2  0.0  0.0  0.97  1.0
  Al  Al1  2  0.0  0.0  0.22  1.0
  Al  Al2  2  0.0  0.0  0.73  1.0
  Zn  Zn3  2  0.0  0.0  0.0  1.0

Sr Al Al Zn
SrZnAl2 crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two SrZnAl2 clusters. Sr(1) is bonded in a distorted linear geometry to one Zn(1) and one Al(1) atom. The Sr(1)-Zn(1) bond length is 0.18 Å. The Sr(1)-Al(1) bond length is 1.61 Å. Zn(1) is bonded in a single-bond geometry to one Sr(1) and one Al(2) atom. The Zn(1)-Al(2) bond length is 1.43 Å. There are two inequivalent Al sites. In the first Al site, Al(1) is bonded in a single-bond geometry to one Sr(1) atom. In the second Al site, Al(2) is bonded in a single-bond geometry to one Zn(1) atom.