The material structure described by Rb5LiNiSi2O8 crystallizes in the monoclinic C2/c space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. In the third Rb site, Rb(3) is bonded in a 6-coordinate geometry to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms. Li(1) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(4) atoms. Ni(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(3) atoms. Si(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Rb(1), one Rb(3), two equivalent Rb(2), one Ni(1), and one Si(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Rb(1), one Rb(3), two equivalent Rb(2), one Li(1), and one Si(1) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Rb(2), two equivalent Rb(3), one Ni(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Rb(1), one Rb(2), two equivalent Rb(3), one Li(1), and one Si(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb5LiSi2NiO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.808
_cell_length_b   6.808
_cell_length_c   13.943
_cell_angle_alpha   82.664
_cell_angle_beta   82.664
_cell_angle_gamma   99.873
_symmetry_Int_Tables_number   1
_cell_volume   624.052
_cell_formula_units_Z   2
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  0.366  0.634  0.750  1.0
  Rb  Rb1  1  0.094  0.460  0.350  1.0
  Rb  Rb2  1  0.634  0.366  0.250  1.0
  Rb  Rb3  1  0.906  0.540  0.650  1.0
  Rb  Rb4  1  0.041  0.744  0.072  1.0
  Rb  Rb5  1  0.460  0.094  0.850  1.0
  Rb  Rb6  1  0.256  0.959  0.428  1.0
  Rb  Rb7  1  0.744  0.041  0.572  1.0
  Rb  Rb8  1  0.540  0.906  0.150  1.0
  Rb  Rb9  1  0.959  0.256  0.928  1.0
  Li  Li10  1  0.960  0.040  0.250  1.0
  Li  Li11  1  0.040  0.960  0.750  1.0
  Si  Si12  1  0.279  0.219  0.630  1.0
  Si  Si13  1  0.781  0.721  0.870  1.0
  Si  Si14  1  0.721  0.781  0.370  1.0
  Si  Si15  1  0.219  0.279  0.130  1.0
  Ni  Ni16  1  0.500  0.500  0.500  1.0
  Ni  Ni17  1  0.500  0.500  0.000  1.0
  O  O18  1  0.520  0.339  0.621  1.0
  O  O19  1  0.745  0.859  0.771  1.0
  O  O20  1  0.859  0.745  0.271  1.0
  O  O21  1  0.771  0.659  0.474  1.0
  O  O22  1  0.229  0.341  0.526  1.0
  O  O23  1  0.141  0.255  0.729  1.0
  O  O24  1  0.339  0.520  0.121  1.0
  O  O25  1  0.750  0.026  0.368  1.0
  O  O26  1  0.974  0.250  0.132  1.0
  O  O27  1  0.480  0.661  0.379  1.0
  O  O28  1  0.255  0.141  0.229  1.0
  O  O29  1  0.026  0.750  0.868  1.0
  O  O30  1  0.659  0.771  0.974  1.0
  O  O31  1  0.250  0.974  0.632  1.0
  O  O32  1  0.661  0.480  0.879  1.0
  O  O33  1  0.341  0.229  0.026  1.0
[/CIF]
.
The material structure described by Rb5LiNiSi2O8 crystallizes in the monoclinic C2/c space group. There are three inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one O(4), two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. In the third Rb site, Rb(3) is bonded in a 6-coordinate geometry to one O(1), one O(2), two equivalent O(3), and two equivalent O(4) atoms. Li(1) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(4) atoms. Ni(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(3) atoms. Si(1) is bonded in a tetrahedral geometry to one O(1), one O(2), one O(3), and one O(4) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 2-coordinate geometry to one Rb(1), one Rb(3), two equivalent Rb(2), one Ni(1), and one Si(1) atom. In the second O site, O(2) is bonded in a 2-coordinate geometry to one Rb(1), one Rb(3), two equivalent Rb(2), one Li(1), and one Si(1) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to two equivalent Rb(2), two equivalent Rb(3), one Ni(1), and one Si(1) atom. In the fourth O site, O(4) is bonded in a 2-coordinate geometry to one Rb(1), one Rb(2), two equivalent Rb(3), one Li(1), and one Si(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Rb5LiSi2NiO8
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.808
_cell_length_b   6.808
_cell_length_c   13.943
_cell_angle_alpha   82.664
_cell_angle_beta   82.664
_cell_angle_gamma   99.873
_symmetry_Int_Tables_number   1
_cell_volume   624.052
_cell_formula_units_Z   2
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  0.366  0.634  0.750  1.0
  Rb  Rb1  1  0.094  0.460  0.350  1.0
  Rb  Rb2  1  0.634  0.366  0.250  1.0
  Rb  Rb3  1  0.906  0.540  0.650  1.0
  Rb  Rb4  1  0.041  0.744  0.072  1.0
  Rb  Rb5  1  0.460  0.094  0.850  1.0
  Rb  Rb6  1  0.256  0.959  0.428  1.0
  Rb  Rb7  1  0.744  0.041  0.572  1.0
  Rb  Rb8  1  0.540  0.906  0.150  1.0
  Rb  Rb9  1  0.959  0.256  0.928  1.0
  Li  Li10  1  0.960  0.040  0.250  1.0
  Li  Li11  1  0.040  0.960  0.750  1.0
  Si  Si12  1  0.279  0.219  0.630  1.0
  Si  Si13  1  0.781  0.721  0.870  1.0
  Si  Si14  1  0.721  0.781  0.370  1.0
  Si  Si15  1  0.219  0.279  0.130  1.0
  Ni  Ni16  1  0.500  0.500  0.500  1.0
  Ni  Ni17  1  0.500  0.500  0.000  1.0
  O  O18  1  0.520  0.339  0.621  1.0
  O  O19  1  0.745  0.859  0.771  1.0
  O  O20  1  0.859  0.745  0.271  1.0
  O  O21  1  0.771  0.659  0.474  1.0
  O  O22  1  0.229  0.341  0.526  1.0
  O  O23  1  0.141  0.255  0.729  1.0
  O  O24  1  0.339  0.520  0.121  1.0
  O  O25  1  0.750  0.026  0.368  1.0
  O  O26  1  0.974  0.250  0.132  1.0
  O  O27  1  0.480  0.661  0.379  1.0
  O  O28  1  0.255  0.141  0.229  1.0
  O  O29  1  0.026  0.750  0.868  1.0
  O  O30  1  0.659  0.771  0.974  1.0
  O  O31  1  0.250  0.974  0.632  1.0
  O  O32  1  0.661  0.480  0.879  1.0
  O  O33  1  0.341  0.229  0.026  1.0
[/CIF]
.