The compound described by Re2O9 is Indium-like structured and crystallizes in the monoclinic P2_1/m space group. The structure is zero-dimensional and consists of two Re2O9 clusters. There are two inequivalent Re sites. In the first Re site, Re(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), two equivalent O(4), and two equivalent O(6) atoms. In the second Re site, Re(2) is bonded in a tetrahedral geometry to one O(1), one O(2), and two equivalent O(5) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to one Re(1) and one Re(2) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Re(2) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Re(1) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one Re(1) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one Re(2) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one Re(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Re2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.122
_cell_length_b   8.953
_cell_length_c   8.636
_cell_angle_alpha   90.000
_cell_angle_beta   103.330
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   385.360
_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
  Re  Re0  1  0.862  0.250  0.898  1.0
  Re  Re1  1  0.138  0.750  0.102  1.0
  Re  Re2  1  0.467  0.250  0.449  1.0
  Re  Re3  1  0.533  0.750  0.551  1.0
  O  O4  1  0.669  0.250  0.652  1.0
  O  O5  1  0.331  0.750  0.348  1.0
  O  O6  1  0.671  0.250  0.314  1.0
  O  O7  1  0.329  0.750  0.686  1.0
  O  O8  1  0.143  0.250  0.058  1.0
  O  O9  1  0.857  0.750  0.942  1.0
  O  O10  1  0.675  0.406  0.931  1.0
  O  O11  1  0.325  0.906  0.069  1.0
  O  O12  1  0.325  0.594  0.069  1.0
  O  O13  1  0.675  0.094  0.931  1.0
  O  O14  1  0.262  0.408  0.416  1.0
  O  O15  1  0.738  0.908  0.584  1.0
  O  O16  1  0.738  0.592  0.584  1.0
  O  O17  1  0.262  0.092  0.416  1.0
  O  O18  1  0.104  0.367  0.772  1.0
  O  O19  1  0.896  0.867  0.228  1.0
  O  O20  1  0.896  0.633  0.228  1.0
  O  O21  1  0.104  0.133  0.772  1.0
[/CIF]
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The compound described by Re2O9 is Indium-like structured and crystallizes in the monoclinic P2_1/m space group. The structure is zero-dimensional and consists of two Re2O9 clusters. There are two inequivalent Re sites. In the first Re site, Re(1) is bonded in a 6-coordinate geometry to one O(1), one O(3), two equivalent O(4), and two equivalent O(6) atoms. In the second Re site, Re(2) is bonded in a tetrahedral geometry to one O(1), one O(2), and two equivalent O(5) atoms. There are six inequivalent O sites. In the first O site, O(1) is bonded in a linear geometry to one Re(1) and one Re(2) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Re(2) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Re(1) atom. In the fourth O site, O(4) is bonded in a single-bond geometry to one Re(1) atom. In the fifth O site, O(5) is bonded in a single-bond geometry to one Re(2) atom. In the sixth O site, O(6) is bonded in a single-bond geometry to one Re(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Re2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.122
_cell_length_b   8.953
_cell_length_c   8.636
_cell_angle_alpha   90.000
_cell_angle_beta   103.330
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   385.360
_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
  Re  Re0  1  0.862  0.250  0.898  1.0
  Re  Re1  1  0.138  0.750  0.102  1.0
  Re  Re2  1  0.467  0.250  0.449  1.0
  Re  Re3  1  0.533  0.750  0.551  1.0
  O  O4  1  0.669  0.250  0.652  1.0
  O  O5  1  0.331  0.750  0.348  1.0
  O  O6  1  0.671  0.250  0.314  1.0
  O  O7  1  0.329  0.750  0.686  1.0
  O  O8  1  0.143  0.250  0.058  1.0
  O  O9  1  0.857  0.750  0.942  1.0
  O  O10  1  0.675  0.406  0.931  1.0
  O  O11  1  0.325  0.906  0.069  1.0
  O  O12  1  0.325  0.594  0.069  1.0
  O  O13  1  0.675  0.094  0.931  1.0
  O  O14  1  0.262  0.408  0.416  1.0
  O  O15  1  0.738  0.908  0.584  1.0
  O  O16  1  0.738  0.592  0.584  1.0
  O  O17  1  0.262  0.092  0.416  1.0
  O  O18  1  0.104  0.367  0.772  1.0
  O  O19  1  0.896  0.867  0.228  1.0
  O  O20  1  0.896  0.633  0.228  1.0
  O  O21  1  0.104  0.133  0.772  1.0
[/CIF]
.