data_BeSn3P
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.88
_cell_length_b   4.88
_cell_length_c   4.88
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeSn3P
_chemical_formula_sum   'Be1 Sn3 P1'
_cell_volume   115.87
_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
  Be  Be4  1  0.0  0.0  0.0  1.0
  Sn  Sn1  1  0.0  0.44  0.0  1.0
  Sn  Sn2  1  0.0  0.0  0.44  1.0
  Sn  Sn3  1  0.44  0.0  0.0  1.0
  P  P0  1  0.44  0.44  0.44  1.0

data_BeSn3P
_symmetry_space_group_name_H-M   R3m
_cell_length_a   6.89
_cell_length_b   6.89
_cell_length_c   8.44
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   BeSn3P
_chemical_formula_sum   'Be3 Sn9 P3'
_cell_volume   347.62
_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
  Be  Be0  3  0.0  0.0  0.0  1.0
  Sn  Sn1  9  0.19  0.37  0.81  1.0
  P  P2  3  0.0  0.0  0.44  1.0

Be Sn Sn Sn P
Be Sn Sn Sn P 0 3 o o o 0 2 o o o 0 1 o o o 0 4 o o o 1 4 o o o 1 4 o o - 1 4 - o o 1 4 - o - 2 4 o o o 2 4 o - o 2 4 - o o 2 4 - - o 3 4 o o o 3 4 o o - 3 4 o - o 3 4 o - - 
BeSn3P crystallizes in the trigonal R3m space group. Be(1) is bonded to six equivalent Sn(1) atoms to form corner-sharing BeSn6 octahedra. The corner-sharing octahedra are not tilted. There are three shorter (2.13 Å) and three longer (2.74 Å) Be(1)-Sn(1) bond lengths. Sn(1) is bonded in a 1-coordinate geometry to two equivalent Be(1) and one P(1) atom. The Sn(1)-P(1) bond length is 3.02 Å. P(1) is bonded in a 3-coordinate geometry to three equivalent Sn(1) atoms.