The compound described by Rb4Li(Se2O7)2 crystallizes in the monoclinic C2 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(4), two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(5), one O(6), two equivalent O(1), and two equivalent O(4) atoms. Li(1) is bonded in a trigonal planar geometry to one O(8) and two equivalent O(1) atoms. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded to one O(1), one O(3), one O(5), and one O(7) atom to form corner-sharing SeO4 tetrahedra. In the second Se site, Se(2) is bonded to one O(2), one O(4), one O(6), and one O(8) atom to form corner-sharing SeO4 tetrahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(2), one Li(1), and one Se(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Rb(2), two equivalent Rb(1), and one Se(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Rb(2), two equivalent Rb(1), and one Se(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Rb(1), two equivalent Rb(2), and one Se(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one Se(1) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one Rb(2) and one Se(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to two equivalent Se(1) atoms. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Li(1) and two equivalent Se(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb4Li(Se2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.203
_cell_length_b   8.203
_cell_length_c   7.829
_cell_angle_alpha   93.466
_cell_angle_beta   93.466
_cell_angle_gamma   61.180
_symmetry_Int_Tables_number   1
_cell_volume   460.445
_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  0.179  0.516  0.340  1.0
  Rb  Rb1  1  0.484  0.821  0.160  1.0
  Rb  Rb2  1  0.777  0.538  0.605  1.0
  Rb  Rb3  1  0.462  0.223  0.895  1.0
  Li  Li4  1  0.869  0.131  0.750  1.0
  Se  Se5  1  0.722  0.074  0.383  1.0
  Se  Se6  1  0.926  0.278  0.117  1.0
  Se  Se7  1  0.290  0.913  0.644  1.0
  Se  Se8  1  0.087  0.710  0.856  1.0
  O  O9  1  0.688  0.205  0.568  1.0
  O  O10  1  0.795  0.312  0.932  1.0
  O  O11  1  0.350  0.759  0.482  1.0
  O  O12  1  0.241  0.650  0.018  1.0
  O  O13  1  0.521  0.164  0.268  1.0
  O  O14  1  0.836  0.479  0.232  1.0
  O  O15  1  0.462  0.859  0.788  1.0
  O  O16  1  0.141  0.538  0.712  1.0
  O  O17  1  0.786  0.852  0.427  1.0
  O  O18  1  0.148  0.214  0.073  1.0
  O  O19  1  0.170  0.134  0.600  1.0
  O  O20  1  0.866  0.830  0.900  1.0
  O  O21  1  0.898  0.102  0.250  1.0
  O  O22  1  0.102  0.898  0.750  1.0
[/CIF]
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The compound described by Rb4Li(Se2O7)2 crystallizes in the monoclinic C2 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(4), two equivalent O(2), two equivalent O(3), and two equivalent O(5) atoms. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to one O(2), one O(3), one O(5), one O(6), two equivalent O(1), and two equivalent O(4) atoms. Li(1) is bonded in a trigonal planar geometry to one O(8) and two equivalent O(1) atoms. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded to one O(1), one O(3), one O(5), and one O(7) atom to form corner-sharing SeO4 tetrahedra. In the second Se site, Se(2) is bonded to one O(2), one O(4), one O(6), and one O(8) atom to form corner-sharing SeO4 tetrahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(2), one Li(1), and one Se(1) atom. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Rb(2), two equivalent Rb(1), and one Se(2) atom. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Rb(2), two equivalent Rb(1), and one Se(1) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one Rb(1), two equivalent Rb(2), and one Se(2) atom. In the fifth O site, O(5) is bonded in a distorted single-bond geometry to one Rb(2), two equivalent Rb(1), and one Se(1) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one Rb(2) and one Se(2) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to two equivalent Se(1) atoms. In the eighth O site, O(8) is bonded in a trigonal planar geometry to one Li(1) and two equivalent Se(2) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb4Li(Se2O7)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.203
_cell_length_b   8.203
_cell_length_c   7.829
_cell_angle_alpha   93.466
_cell_angle_beta   93.466
_cell_angle_gamma   61.180
_symmetry_Int_Tables_number   1
_cell_volume   460.445
_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  0.179  0.516  0.340  1.0
  Rb  Rb1  1  0.484  0.821  0.160  1.0
  Rb  Rb2  1  0.777  0.538  0.605  1.0
  Rb  Rb3  1  0.462  0.223  0.895  1.0
  Li  Li4  1  0.869  0.131  0.750  1.0
  Se  Se5  1  0.722  0.074  0.383  1.0
  Se  Se6  1  0.926  0.278  0.117  1.0
  Se  Se7  1  0.290  0.913  0.644  1.0
  Se  Se8  1  0.087  0.710  0.856  1.0
  O  O9  1  0.688  0.205  0.568  1.0
  O  O10  1  0.795  0.312  0.932  1.0
  O  O11  1  0.350  0.759  0.482  1.0
  O  O12  1  0.241  0.650  0.018  1.0
  O  O13  1  0.521  0.164  0.268  1.0
  O  O14  1  0.836  0.479  0.232  1.0
  O  O15  1  0.462  0.859  0.788  1.0
  O  O16  1  0.141  0.538  0.712  1.0
  O  O17  1  0.786  0.852  0.427  1.0
  O  O18  1  0.148  0.214  0.073  1.0
  O  O19  1  0.170  0.134  0.600  1.0
  O  O20  1  0.866  0.830  0.900  1.0
  O  O21  1  0.898  0.102  0.250  1.0
  O  O22  1  0.102  0.898  0.750  1.0
[/CIF]
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