The crystal structure described by K2Tc crystallizes in the orthorhombic Amm2 space group. There are four inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to two equivalent K(1), one Tc(1), and four equivalent Tc(2) atoms. In the second K site, K(2) is bonded in a 7-coordinate geometry to two equivalent K(2), one Tc(1), and four equivalent Tc(2) atoms. In the third K site, K(3) is bonded in a 6-coordinate geometry to two equivalent K(3), two equivalent Tc(1), and two equivalent Tc(2) atoms. In the fourth K site, K(4) is bonded in a 6-coordinate geometry to two equivalent K(4), two equivalent Tc(1), and two equivalent Tc(2) atoms. There are two inequivalent Tc sites. In the first Tc site, Tc(1) is bonded in a distorted q6 geometry to one K(1), two equivalent K(2), two equivalent K(3), four equivalent K(4), and two equivalent Tc(1) atoms. In the second Tc site, Tc(2) is bonded in a 11-coordinate geometry to one K(3), two equivalent K(1), two equivalent K(4), four equivalent K(2), and two equivalent Tc(2) atoms. is represented by the CIF file [CIF]
data_K2Tc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.751
_cell_length_b   10.751
_cell_length_c   2.832
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.480
_symmetry_Int_Tables_number   1
_cell_volume   284.986
_cell_formula_units_Z   3
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
  K  K0  1  0.354  0.354  0.000  1.0
  K  K1  1  0.650  0.001  0.000  1.0
  K  K2  1  0.001  0.650  0.000  1.0
  K  K3  1  0.683  0.683  0.500  1.0
  K  K4  1  0.312  0.001  0.500  1.0
  K  K5  1  0.001  0.312  0.500  1.0
  Tc  Tc6  1  0.995  0.995  0.000  1.0
  Tc  Tc7  1  0.668  0.335  0.500  1.0
  Tc  Tc8  1  0.335  0.668  0.500  1.0
[/CIF]
.
The crystal structure described by K2Tc crystallizes in the orthorhombic Amm2 space group. There are four inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to two equivalent K(1), one Tc(1), and four equivalent Tc(2) atoms. In the second K site, K(2) is bonded in a 7-coordinate geometry to two equivalent K(2), one Tc(1), and four equivalent Tc(2) atoms. In the third K site, K(3) is bonded in a 6-coordinate geometry to two equivalent K(3), two equivalent Tc(1), and two equivalent Tc(2) atoms. In the fourth K site, K(4) is bonded in a 6-coordinate geometry to two equivalent K(4), two equivalent Tc(1), and two equivalent Tc(2) atoms. There are two inequivalent Tc sites. In the first Tc site, Tc(1) is bonded in a distorted q6 geometry to one K(1), two equivalent K(2), two equivalent K(3), four equivalent K(4), and two equivalent Tc(1) atoms. In the second Tc site, Tc(2) is bonded in a 11-coordinate geometry to one K(3), two equivalent K(1), two equivalent K(4), four equivalent K(2), and two equivalent Tc(2) atoms. is represented by the CIF file [CIF]
data_K2Tc
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.751
_cell_length_b   10.751
_cell_length_c   2.832
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   119.480
_symmetry_Int_Tables_number   1
_cell_volume   284.986
_cell_formula_units_Z   3
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
  K  K0  1  0.354  0.354  0.000  1.0
  K  K1  1  0.650  0.001  0.000  1.0
  K  K2  1  0.001  0.650  0.000  1.0
  K  K3  1  0.683  0.683  0.500  1.0
  K  K4  1  0.312  0.001  0.500  1.0
  K  K5  1  0.001  0.312  0.500  1.0
  Tc  Tc6  1  0.995  0.995  0.000  1.0
  Tc  Tc7  1  0.668  0.335  0.500  1.0
  Tc  Tc8  1  0.335  0.668  0.500  1.0
[/CIF]
.