data_Co3TcH
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.63
_cell_length_b   3.63
_cell_length_c   3.63
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Co3TcH
_chemical_formula_sum   'Co3 Tc1 H1'
_cell_volume   47.69
_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  Co1  1  0.0  0.81  0.0  1.0
  Co  Co2  1  0.0  0.0  0.81  1.0
  Co  Co3  1  0.81  0.0  0.0  1.0
  Tc  Tc4  1  0.81  0.81  0.81  1.0
  H  H0  1  0.0  0.0  0.0  1.0

data_Co3TcH
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.13
_cell_length_b   5.13
_cell_length_c   6.28
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Co3TcH
_chemical_formula_sum   'Co9 Tc3 H3'
_cell_volume   143.06
_cell_formula_units_Z   3
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+1/3, z+1/3'
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  9  0.06  0.12  0.94  1.0
  Tc  Tc1  3  0.0  0.0  0.81  1.0
  H  H2  3  0.0  0.0  0.0  1.0

Co Co Co Tc H
TcCo3H is alpha Po structured and crystallizes in the trigonal R3m space group. The structure is zero-dimensional and consists of three TcCo3H clusters. Tc(1) is bonded in a 3-coordinate geometry to three equivalent Co(1) atoms. All Tc(1)-Co(1) bond lengths are 0.96 Å. Co(1) is bonded in a distorted single-bond geometry to one Tc(1) and one H(1) atom. The Co(1)-H(1) bond length is 0.68 Å. H(1) is bonded in a distorted T-shaped geometry to three equivalent Co(1) atoms.