The material structure described by Rb2Li(TcO4)2 crystallizes in the triclinic P1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to one O(1), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. Li(1) is bonded to one O(1), one O(2), one O(5), and one O(8) atom to form LiO4 tetrahedra that share  a cornercorner with one Tc(1)O4 tetrahedra,  a cornercorner with one Tc(2)O4 tetrahedra, and  an edgeedge with one Tc(2)O4 tetrahedra. There are two inequivalent Tc sites. In the first Tc site, Tc(1) is bonded to one O(1), one O(3), one O(4), and one O(7) atom to form TcO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra. In the second Tc site, Tc(2) is bonded to one O(2), one O(5), one O(6), and one O(8) atom to form TcO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra and  an edgeedge with one Li(1)O4 tetrahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Rb(2), one Li(1), and one Tc(1) atom. In the second O site, O(2) is bonded in a distorted L-shaped geometry to one Rb(2), one Li(1), and one Tc(2) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Rb(1), one Rb(2), and one Tc(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), and one Tc(1) atom. In the fifth O site, O(5) is bonded in a distorted L-shaped geometry to one Rb(1), one Rb(2), one Li(1), and one Tc(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), and one Tc(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), and one Tc(1) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Rb(2), one Li(1), and one Tc(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2Li(TcO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.933
_cell_length_b   5.703
_cell_length_c   6.304
_cell_angle_alpha   98.031
_cell_angle_beta   109.157
_cell_angle_gamma   107.751
_symmetry_Int_Tables_number   1
_cell_volume   247.279
_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
  Rb  Rb0  1  0.260  0.594  0.457  1.0
  Rb  Rb1  1  0.703  0.314  0.572  1.0
  Li  Li2  1  0.118  0.719  0.975  1.0
  Tc  Tc3  1  0.765  0.845  0.121  1.0
  Tc  Tc4  1  0.239  0.161  0.874  1.0
  O  O5  1  0.914  0.677  0.092  1.0
  O  O6  1  0.325  0.081  0.144  1.0
  O  O7  1  0.610  0.691  0.246  1.0
  O  O8  1  0.905  0.155  0.300  1.0
  O  O9  1  0.065  0.851  0.697  1.0
  O  O10  1  0.396  0.256  0.732  1.0
  O  O11  1  0.636  0.864  0.844  1.0
  O  O12  1  0.139  0.397  0.915  1.0
[/CIF]
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The material structure described by Rb2Li(TcO4)2 crystallizes in the triclinic P1 space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to one O(1), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom. Li(1) is bonded to one O(1), one O(2), one O(5), and one O(8) atom to form LiO4 tetrahedra that share  a cornercorner with one Tc(1)O4 tetrahedra,  a cornercorner with one Tc(2)O4 tetrahedra, and  an edgeedge with one Tc(2)O4 tetrahedra. There are two inequivalent Tc sites. In the first Tc site, Tc(1) is bonded to one O(1), one O(3), one O(4), and one O(7) atom to form TcO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra. In the second Tc site, Tc(2) is bonded to one O(2), one O(5), one O(6), and one O(8) atom to form TcO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra and  an edgeedge with one Li(1)O4 tetrahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Rb(2), one Li(1), and one Tc(1) atom. In the second O site, O(2) is bonded in a distorted L-shaped geometry to one Rb(2), one Li(1), and one Tc(2) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Rb(1), one Rb(2), and one Tc(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), and one Tc(1) atom. In the fifth O site, O(5) is bonded in a distorted L-shaped geometry to one Rb(1), one Rb(2), one Li(1), and one Tc(2) atom. In the sixth O site, O(6) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), and one Tc(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Rb(1), one Rb(2), and one Tc(1) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Rb(2), one Li(1), and one Tc(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb2Li(TcO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.933
_cell_length_b   5.703
_cell_length_c   6.304
_cell_angle_alpha   98.031
_cell_angle_beta   109.157
_cell_angle_gamma   107.751
_symmetry_Int_Tables_number   1
_cell_volume   247.279
_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
  Rb  Rb0  1  0.260  0.594  0.457  1.0
  Rb  Rb1  1  0.703  0.314  0.572  1.0
  Li  Li2  1  0.118  0.719  0.975  1.0
  Tc  Tc3  1  0.765  0.845  0.121  1.0
  Tc  Tc4  1  0.239  0.161  0.874  1.0
  O  O5  1  0.914  0.677  0.092  1.0
  O  O6  1  0.325  0.081  0.144  1.0
  O  O7  1  0.610  0.691  0.246  1.0
  O  O8  1  0.905  0.155  0.300  1.0
  O  O9  1  0.065  0.851  0.697  1.0
  O  O10  1  0.396  0.256  0.732  1.0
  O  O11  1  0.636  0.864  0.844  1.0
  O  O12  1  0.139  0.397  0.915  1.0
[/CIF]
.