data_BeTcAs2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.37
_cell_length_b   4.37
_cell_length_c   4.6
_cell_angle_alpha   93.87
_cell_angle_beta   93.87
_cell_angle_gamma   41.88
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeTcAs2
_chemical_formula_sum   'Be1 Tc1 As2'
_cell_volume   58.52
_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  Be2  1  0.0  0.0  0.0  1.0
  Tc  Tc3  1  0.91  0.0  0.3  1.0
  As  As0  1  0.59  0.0  0.42  1.0
  As  As1  1  0.24  0.0  0.17  1.0

data_BeTcAs2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.12
_cell_length_b   4.37
_cell_length_c   4.6
_cell_angle_alpha   93.87
_cell_angle_beta   90.0
_cell_angle_gamma   110.94
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BeTcAs2
_chemical_formula_sum   'Be1 Tc1 As2'
_cell_volume   58.52
_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  Be0  1  0.0  0.0  0.0  1.0
  Tc  Tc1  1  0.0  0.09  0.7  1.0
  As  As2  1  0.0  0.41  0.58  1.0
  As  As3  1  0.0  0.76  0.83  1.0

Be Tc As As
BeTcAs2 is Indium-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one BeTcAs2 cluster. Be(1) is bonded in a 2-coordinate geometry to one Tc(1) and one As(2) atom. The Be(1)-Tc(1) bond length is 1.44 Å. The Be(1)-As(2) bond length is 1.27 Å. Tc(1) is bonded in a 3-coordinate geometry to one Be(1), one As(1), and one As(2) atom. The Tc(1)-As(1) bond length is 1.57 Å. The Tc(1)-As(2) bond length is 1.57 Å. There are two inequivalent As sites. In the first As site, As(1) is bonded in a distorted single-bond geometry to one Tc(1) atom. In the second As site, As(2) is bonded in a 1-coordinate geometry to one Be(1) and one Tc(1) atom.