data_RbLi2Ge
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.15
_cell_length_b   5.15
_cell_length_c   5.15
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   RbLi2Ge
_chemical_formula_sum   'Rb1 Li2 Ge1'
_cell_volume   96.48
_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  Rb3  1  0.64  0.64  0.64  1.0
  Li  Li1  1  0.82  0.82  0.82  1.0
  Li  Li2  1  0.46  0.46  0.46  1.0
  Ge  Ge0  1  0.0  0.0  0.0  1.0

data_RbLi2Ge
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.15
_cell_length_b   5.15
_cell_length_c   12.61
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   RbLi2Ge
_chemical_formula_sum   'Rb3 Li6 Ge3'
_cell_volume   289.45
_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
  Rb  Rb0  3  0.0  0.0  0.36  1.0
  Li  Li1  3  0.0  0.0  0.18  1.0
  Li  Li2  3  0.0  0.0  0.54  1.0
  Ge  Ge3  3  0.0  0.0  0.0  1.0

Rb Li Li Ge
RbLi2Ge crystallizes in the trigonal R3m space group. Rb(1) is bonded to one Li(1), one Li(2), and three equivalent Ge(1) atoms to form RbLi2Ge3 trigonal bipyramids that share corners with six equivalent Rb(1)Li2Ge3 trigonal bipyramids and  a cornercorner with one Ge(1)Rb3Li trigonal pyramid. The Rb(1)-Li(1) bond length is 2.27 Å. The Rb(1)-Li(2) bond length is 2.27 Å. All Rb(1)-Ge(1) bond lengths are 2.99 Å. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a distorted linear geometry to one Rb(1) and one Ge(1) atom. The Li(1)-Ge(1) bond length is 2.27 Å. In the second Li site, Li(2) is bonded in a single-bond geometry to one Rb(1) atom. Ge(1) is bonded to three equivalent Rb(1) and one Li(1) atom to form distorted GeRb3Li trigonal pyramids that share  a cornercorner with one Rb(1)Li2Ge3 trigonal bipyramid and corners with six equivalent Ge(1)Rb3Li trigonal pyramids.