data_SrHfBe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.79
_cell_length_b   4.79
_cell_length_c   4.79
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SrHfBe
_chemical_formula_sum   'Sr1 Hf1 Be1'
_cell_volume   77.56
_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  0.69  0.69  0.69  1.0
  Hf  Hf1  1  0.08  0.08  0.08  1.0
  Be  Be0  1  0.0  0.0  0.0  1.0

data_SrHfBe
_symmetry_space_group_name_H-M   R3m
_cell_length_a   4.79
_cell_length_b   4.79
_cell_length_c   11.73
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   SrHfBe
_chemical_formula_sum   'Sr3 Hf3 Be3'
_cell_volume   232.69
_cell_formula_units_Z   3
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  3  0.0  0.0  0.31  1.0
  Hf  Hf1  3  0.0  0.0  0.92  1.0
  Be  Be2  3  0.0  0.0  0.0  1.0

Sr Hf Be
Sr Hf Be 0 2 o + + 0 2 + o + 0 2 + + o 0 1 o + + 0 1 + o + 0 1 + + o 1 2 o o o 
SrBeHf crystallizes in the trigonal R3m space group. Sr(1) is bonded in a 7-coordinate geometry to four equivalent Be(1) and three equivalent Hf(1) atoms. There are three shorter (2.78 Å) and one longer (3.61 Å) Sr(1)-Be(1) bond length. All Sr(1)-Hf(1) bond lengths are 2.83 Å. Be(1) is bonded in a single-bond geometry to four equivalent Sr(1) and one Hf(1) atom. The Be(1)-Hf(1) bond length is 0.91 Å. Hf(1) is bonded in a single-bond geometry to three equivalent Sr(1) and one Be(1) atom.