data_Y2MnBe
_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   121.14
_cell_angle_beta   119.75
_cell_angle_gamma   89.24
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Y2MnBe
_chemical_formula_sum   'Y2 Mn1 Be1'
_cell_volume   77.04
_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
  Y  Y2  1  0.35  0.0  0.71  1.0
  Y  Y3  1  0.0  0.4  0.69  1.0
  Mn  Mn1  1  0.0  0.0  0.41  1.0
  Be  Be0  1  0.0  0.0  0.0  1.0

data_Y2MnBe
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.7
_cell_length_b   4.79
_cell_length_c   4.79
_cell_angle_alpha   60.25
_cell_angle_beta   60.57
_cell_angle_gamma   60.57
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Y2MnBe
_chemical_formula_sum   'Y2 Mn1 Be1'
_cell_volume   77.04
_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
  Y  Y0  1  0.36  0.35  0.29  1.0
  Y  Y1  1  0.69  0.0  0.71  1.0
  Mn  Mn2  1  0.41  0.0  0.59  1.0
  Be  Be3  1  0.0  0.0  0.0  1.0

Y Y Mn Be
Y Y Mn Be 0 2 o o o 1 2 o o o 2 3 o o o 
BeY2Mn crystallizes in the triclinic P1 space group. Be(1) is bonded in a 4-coordinate geometry to one Y(2), two equivalent Y(1), and one Mn(1) atom. The Be(1)-Y(2) bond length is 2.45 Å. There is one shorter (2.65 Å) and one longer (2.70 Å) Be(1)-Y(1) bond length. The Be(1)-Mn(1) bond length is 1.95 Å. There are two inequivalent Y sites. In the first Y site, Y(1) is bonded in a distorted single-bond geometry to two equivalent Be(1) and one Mn(1) atom. The Y(1)-Mn(1) bond length is 1.59 Å. In the second Y site, Y(2) is bonded in a 1-coordinate geometry to one Be(1) and one Mn(1) atom. The Y(2)-Mn(1) bond length is 1.69 Å. Mn(1) is bonded in a 3-coordinate geometry to one Be(1), one Y(1), and one Y(2) atom.