The compound described by Rb2Be2O3 crystallizes in the tetragonal P4_12_12 space group. Rb(1) is bonded in a 7-coordinate geometry to one Be(1), two equivalent O(2), and four equivalent O(1) atoms. Be(1) is bonded in a trigonal planar geometry to one Rb(1), one O(2), and two equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to four equivalent Rb(1) and two equivalent Be(1) atoms. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to four equivalent Rb(1) and two equivalent Be(1) atoms. is represented by the CIF card [CIF]
data_Rb2Be2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.578
_cell_length_b   7.578
_cell_length_c   7.392
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   424.429
_cell_formula_units_Z   4
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  0.754  0.996  0.363  1.0
  Rb  Rb1  1  0.004  0.246  0.137  1.0
  Rb  Rb2  1  0.504  0.254  0.613  1.0
  Rb  Rb3  1  0.254  0.504  0.387  1.0
  Rb  Rb4  1  0.746  0.496  0.887  1.0
  Rb  Rb5  1  0.496  0.746  0.113  1.0
  Rb  Rb6  1  0.996  0.754  0.637  1.0
  Rb  Rb7  1  0.246  0.004  0.863  1.0
  Be  Be8  1  0.720  0.033  0.842  1.0
  Be  Be9  1  0.967  0.280  0.658  1.0
  Be  Be10  1  0.467  0.220  0.092  1.0
  Be  Be11  1  0.220  0.467  0.908  1.0
  Be  Be12  1  0.780  0.533  0.408  1.0
  Be  Be13  1  0.533  0.780  0.592  1.0
  Be  Be14  1  0.033  0.720  0.158  1.0
  Be  Be15  1  0.280  0.967  0.342  1.0
  O  O16  1  0.367  0.872  0.506  1.0
  O  O17  1  0.387  0.387  0.000  1.0
  O  O18  1  0.372  0.133  0.256  1.0
  O  O19  1  0.872  0.367  0.494  1.0
  O  O20  1  0.887  0.113  0.750  1.0
  O  O21  1  0.867  0.628  0.244  1.0
  O  O22  1  0.133  0.372  0.744  1.0
  O  O23  1  0.113  0.887  0.250  1.0
  O  O24  1  0.128  0.633  0.994  1.0
  O  O25  1  0.628  0.867  0.756  1.0
  O  O26  1  0.613  0.613  0.500  1.0
  O  O27  1  0.633  0.128  0.006  1.0
[/CIF]
.
The compound described by Rb2Be2O3 crystallizes in the tetragonal P4_12_12 space group. Rb(1) is bonded in a 7-coordinate geometry to one Be(1), two equivalent O(2), and four equivalent O(1) atoms. Be(1) is bonded in a trigonal planar geometry to one Rb(1), one O(2), and two equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to four equivalent Rb(1) and two equivalent Be(1) atoms. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to four equivalent Rb(1) and two equivalent Be(1) atoms. is represented by the CIF card [CIF]
data_Rb2Be2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.578
_cell_length_b   7.578
_cell_length_c   7.392
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   424.429
_cell_formula_units_Z   4
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  0.754  0.996  0.363  1.0
  Rb  Rb1  1  0.004  0.246  0.137  1.0
  Rb  Rb2  1  0.504  0.254  0.613  1.0
  Rb  Rb3  1  0.254  0.504  0.387  1.0
  Rb  Rb4  1  0.746  0.496  0.887  1.0
  Rb  Rb5  1  0.496  0.746  0.113  1.0
  Rb  Rb6  1  0.996  0.754  0.637  1.0
  Rb  Rb7  1  0.246  0.004  0.863  1.0
  Be  Be8  1  0.720  0.033  0.842  1.0
  Be  Be9  1  0.967  0.280  0.658  1.0
  Be  Be10  1  0.467  0.220  0.092  1.0
  Be  Be11  1  0.220  0.467  0.908  1.0
  Be  Be12  1  0.780  0.533  0.408  1.0
  Be  Be13  1  0.533  0.780  0.592  1.0
  Be  Be14  1  0.033  0.720  0.158  1.0
  Be  Be15  1  0.280  0.967  0.342  1.0
  O  O16  1  0.367  0.872  0.506  1.0
  O  O17  1  0.387  0.387  0.000  1.0
  O  O18  1  0.372  0.133  0.256  1.0
  O  O19  1  0.872  0.367  0.494  1.0
  O  O20  1  0.887  0.113  0.750  1.0
  O  O21  1  0.867  0.628  0.244  1.0
  O  O22  1  0.133  0.372  0.744  1.0
  O  O23  1  0.113  0.887  0.250  1.0
  O  O24  1  0.128  0.633  0.994  1.0
  O  O25  1  0.628  0.867  0.756  1.0
  O  O26  1  0.613  0.613  0.500  1.0
  O  O27  1  0.633  0.128  0.006  1.0
[/CIF]
.