The structure described by Se is alpha-like structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four cyclooctaselenium molecules. There are eight inequivalent Se sites. In the first Se site, Se(1) is bonded in a water-like geometry to one Se(2) and one Se(8) atom. In the second Se site, Se(2) is bonded in a water-like geometry to one Se(1) and one Se(3) atom. In the third Se site, Se(3) is bonded in a water-like geometry to one Se(2) and one Se(4) atom. In the fourth Se site, Se(4) is bonded in a water-like geometry to one Se(3) and one Se(5) atom. In the fifth Se site, Se(5) is bonded in a water-like geometry to one Se(4) and one Se(6) atom. In the sixth Se site, Se(6) is bonded in a water-like geometry to one Se(5) and one Se(7) atom. In the seventh Se site, Se(7) is bonded in a water-like geometry to one Se(6) and one Se(8) atom. In the eighth Se site, Se(8) is bonded in a water-like geometry to one Se(1) and one Se(7) atom. is represented by the CIF file [CIF]
data_Se
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.263
_cell_length_b   9.583
_cell_length_c   11.843
_cell_angle_alpha   90.000
_cell_angle_beta   90.559
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1051.279
_cell_formula_units_Z   32
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
  Se  Se0  1  0.318  0.489  0.238  1.0
  Se  Se1  1  0.182  0.989  0.262  1.0
  Se  Se2  1  0.682  0.511  0.762  1.0
  Se  Se3  1  0.818  0.011  0.738  1.0
  Se  Se4  1  0.421  0.656  0.358  1.0
  Se  Se5  1  0.079  0.156  0.142  1.0
  Se  Se6  1  0.579  0.344  0.642  1.0
  Se  Se7  1  0.921  0.844  0.858  1.0
  Se  Se8  1  0.318  0.635  0.537  1.0
  Se  Se9  1  0.182  0.135  0.963  1.0
  Se  Se10  1  0.682  0.365  0.463  1.0
  Se  Se11  1  0.818  0.865  0.037  1.0
  Se  Se12  1  0.136  0.806  0.553  1.0
  Se  Se13  1  0.364  0.306  0.947  1.0
  Se  Se14  1  0.864  0.194  0.447  1.0
  Se  Se15  1  0.636  0.694  0.053  1.0
  Se  Se16  1  0.917  0.691  0.520  1.0
  Se  Se17  1  0.583  0.191  0.980  1.0
  Se  Se18  1  0.083  0.309  0.480  1.0
  Se  Se19  1  0.417  0.809  0.020  1.0
  Se  Se20  1  0.848  0.729  0.332  1.0
  Se  Se21  1  0.652  0.229  0.168  1.0
  Se  Se22  1  0.152  0.271  0.668  1.0
  Se  Se23  1  0.348  0.771  0.832  1.0
  Se  Se24  1  0.919  0.531  0.229  1.0
  Se  Se25  1  0.581  0.031  0.271  1.0
  Se  Se26  1  0.081  0.469  0.771  1.0
  Se  Se27  1  0.419  0.969  0.729  1.0
  Se  Se28  1  0.130  0.597  0.137  1.0
  Se  Se29  1  0.370  0.097  0.363  1.0
  Se  Se30  1  0.870  0.403  0.863  1.0
  Se  Se31  1  0.630  0.903  0.637  1.0
[/CIF]
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The structure described by Se is alpha-like structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four cyclooctaselenium molecules. There are eight inequivalent Se sites. In the first Se site, Se(1) is bonded in a water-like geometry to one Se(2) and one Se(8) atom. In the second Se site, Se(2) is bonded in a water-like geometry to one Se(1) and one Se(3) atom. In the third Se site, Se(3) is bonded in a water-like geometry to one Se(2) and one Se(4) atom. In the fourth Se site, Se(4) is bonded in a water-like geometry to one Se(3) and one Se(5) atom. In the fifth Se site, Se(5) is bonded in a water-like geometry to one Se(4) and one Se(6) atom. In the sixth Se site, Se(6) is bonded in a water-like geometry to one Se(5) and one Se(7) atom. In the seventh Se site, Se(7) is bonded in a water-like geometry to one Se(6) and one Se(8) atom. In the eighth Se site, Se(8) is bonded in a water-like geometry to one Se(1) and one Se(7) atom. is represented by the CIF file [CIF]
data_Se
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.263
_cell_length_b   9.583
_cell_length_c   11.843
_cell_angle_alpha   90.000
_cell_angle_beta   90.559
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   1051.279
_cell_formula_units_Z   32
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
  Se  Se0  1  0.318  0.489  0.238  1.0
  Se  Se1  1  0.182  0.989  0.262  1.0
  Se  Se2  1  0.682  0.511  0.762  1.0
  Se  Se3  1  0.818  0.011  0.738  1.0
  Se  Se4  1  0.421  0.656  0.358  1.0
  Se  Se5  1  0.079  0.156  0.142  1.0
  Se  Se6  1  0.579  0.344  0.642  1.0
  Se  Se7  1  0.921  0.844  0.858  1.0
  Se  Se8  1  0.318  0.635  0.537  1.0
  Se  Se9  1  0.182  0.135  0.963  1.0
  Se  Se10  1  0.682  0.365  0.463  1.0
  Se  Se11  1  0.818  0.865  0.037  1.0
  Se  Se12  1  0.136  0.806  0.553  1.0
  Se  Se13  1  0.364  0.306  0.947  1.0
  Se  Se14  1  0.864  0.194  0.447  1.0
  Se  Se15  1  0.636  0.694  0.053  1.0
  Se  Se16  1  0.917  0.691  0.520  1.0
  Se  Se17  1  0.583  0.191  0.980  1.0
  Se  Se18  1  0.083  0.309  0.480  1.0
  Se  Se19  1  0.417  0.809  0.020  1.0
  Se  Se20  1  0.848  0.729  0.332  1.0
  Se  Se21  1  0.652  0.229  0.168  1.0
  Se  Se22  1  0.152  0.271  0.668  1.0
  Se  Se23  1  0.348  0.771  0.832  1.0
  Se  Se24  1  0.919  0.531  0.229  1.0
  Se  Se25  1  0.581  0.031  0.271  1.0
  Se  Se26  1  0.081  0.469  0.771  1.0
  Se  Se27  1  0.419  0.969  0.729  1.0
  Se  Se28  1  0.130  0.597  0.137  1.0
  Se  Se29  1  0.370  0.097  0.363  1.0
  Se  Se30  1  0.870  0.403  0.863  1.0
  Se  Se31  1  0.630  0.903  0.637  1.0
[/CIF]
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