data_NaBeCu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.71
_cell_length_b   2.71
_cell_length_c   6.85
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaBeCu
_chemical_formula_sum   'Na1 Be1 Cu1'
_cell_volume   43.5
_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
  Na  Na2  1  0.0  0.56  0.56  1.0
  Be  Be0  1  0.0  0.0  0.29  1.0
  Cu  Cu1  1  0.35  0.78  1.0  1.0

data_NaBeCu
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.71
_cell_length_b   2.71
_cell_length_c   6.85
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaBeCu
_chemical_formula_sum   'Na1 Be1 Cu1'
_cell_volume   43.5
_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
  Na  Na0  1  0.0  0.56  0.56  1.0
  Be  Be1  1  0.0  0.0  0.29  1.0
  Cu  Cu2  1  0.35  0.78  1.0  1.0

Na Be Cu
NaBeCu crystallizes in the triclinic P1 space group. Na(1) is bonded in a 3-coordinate geometry to two equivalent Be(1) and one Cu(1) atom. There is one shorter (2.20 Å) and one longer (2.40 Å) Na(1)-Be(1) bond length. The Na(1)-Cu(1) bond length is 3.13 Å. Be(1) is bonded in a 5-coordinate geometry to two equivalent Na(1) and three equivalent Cu(1) atoms. There are a spread of Be(1)-Cu(1) bond distances ranging from 2.40-2.70 Å. Cu(1) is bonded in a 4-coordinate geometry to one Na(1) and three equivalent Be(1) atoms.