data_Co2TcRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.65
_cell_length_b   2.65
_cell_length_c   7.22
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Co2TcRh
_chemical_formula_sum   'Co2 Tc1 Rh1'
_cell_volume   50.64
_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
  Co  Co0  1  0.32  0.32  0.1  1.0
  Co  Co1  1  0.0  0.0  0.68  1.0
  Tc  Tc3  1  0.0  0.0  0.51  1.0
  Rh  Rh2  1  0.32  0.32  0.55  1.0

data_Co2TcRh
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.74
_cell_length_b   3.74
_cell_length_c   7.22
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Co2TcRh
_chemical_formula_sum   'Co4 Tc2 Rh2'
_cell_volume   101.27
_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
  Co  Co0  2  0.0  0.0  0.68  1.0
  Co  Co1  2  0.32  0.0  0.1  1.0
  Tc  Tc2  2  0.0  0.0  0.51  1.0
  Rh  Rh3  2  0.32  0.0  0.55  1.0

Co Co Tc Rh
Co Co Tc Rh 0 0 + o o 0 0 o + o 1 2 o o o 2 3 o o o 
TcRhCo2 crystallizes in the monoclinic Cm space group. Tc(1) is bonded in a 4-coordinate geometry to three equivalent Rh(1), one Co(1), and one Co(2) atom. There is one shorter (1.25 Å) and two longer (2.01 Å) Tc(1)-Rh(1) bond lengths. The Tc(1)-Co(1) bond length is 3.20 Å. The Tc(1)-Co(2) bond length is 1.28 Å. Rh(1) is bonded in a 1-coordinate geometry to three equivalent Tc(1), one Co(1), and one Co(2) atom. The Rh(1)-Co(1) bond length is 3.25 Å. The Rh(1)-Co(2) bond length is 1.57 Å. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a 7-coordinate geometry to one Tc(1), one Rh(1), one Co(2), and four equivalent Co(1) atoms. The Co(1)-Co(2) bond length is 3.21 Å. All Co(1)-Co(1) bond lengths are 2.65 Å. In the second Co site, Co(2) is bonded in a 2-coordinate geometry to one Tc(1), one Rh(1), and one Co(1) atom.