data_TaMn2Cr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.15
_cell_length_b   4.15
_cell_length_c   2.98
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TaMn2Cr
_chemical_formula_sum   'Ta1 Mn2 Cr1'
_cell_volume   51.38
_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
  Ta  Ta3  1  0.08  0.08  0.0  1.0
  Mn  Mn1  1  0.0  0.08  0.49  1.0
  Mn  Mn2  1  0.08  0.0  0.49  1.0
  Cr  Cr0  1  0.0  0.0  0.0  1.0

data_TaMn2Cr
_symmetry_space_group_name_H-M   Amm2
_cell_length_a   2.98
_cell_length_b   5.88
_cell_length_c   5.88
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   38
_chemical_formula_structural   TaMn2Cr
_chemical_formula_sum   'Ta2 Mn4 Cr2'
_cell_volume   102.75
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-x, -y, z'
  3  '-x, y, z'
  4  'x, -y, z'
  5  'x, y+1/2, z+1/2'
  6  '-x, -y+1/2, z+1/2'
  7  '-x, y+1/2, z+1/2'
  8  'x, -y+1/2, z+1/2'
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
  Ta  Ta0  2  0.0  0.0  0.08  1.0
  Mn  Mn1  4  0.5  0.04  0.04  1.0
  Cr  Cr2  2  0.0  0.0  0.0  1.0

Ta Mn Mn Cr
Ta Mn Mn Cr 0 3 o o o 1 2 o o o 
Cr(Ta)(Mn)2 is alpha carbon monoxide-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two chromium;tantalum molecules and two manganese molecules.