data_NaMnTl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.75
_cell_length_b   7.61
_cell_length_c   2.91
_cell_angle_alpha   81.69
_cell_angle_beta   76.47
_cell_angle_gamma   21.84
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaMnTl
_chemical_formula_sum   'Na1 Mn1 Tl1'
_cell_volume   60.88
_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  Na1  1  0.79  0.3  0.73  1.0
  Mn  Mn0  1  0.79  0.3  0.72  1.0
  Tl  Tl2  1  0.79  0.3  0.14  1.0

data_NaMnTl
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.58
_cell_length_b   14.8
_cell_length_c   2.91
_cell_angle_alpha   90.0
_cell_angle_beta   127.92
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NaMnTl
_chemical_formula_sum   'Na2 Mn2 Tl2'
_cell_volume   121.75
_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+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  2  0.18  0.0  0.48  1.0
  Mn  Mn1  2  0.19  0.0  0.49  1.0
  Tl  Tl2  2  0.27  0.5  0.07  1.0

Na Mn Tl
Na Mn Tl 0 1 o o o 0 2 o o + 1 2 o o + 
NaMnTl crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two NaMnTl clusters. Na(1) is bonded in a distorted linear geometry to one Mn(1) and one Tl(1) atom. The Na(1)-Mn(1) bond length is 0.01 Å. The Na(1)-Tl(1) bond length is 1.21 Å. Mn(1) is bonded in a single-bond geometry to one Na(1) atom. Tl(1) is bonded in a distorted single-bond geometry to one Na(1) atom.