The compound described by Yb2SiO5 crystallizes in the monoclinic C2/c space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms. In the second Yb site, Yb(2) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms. Si(1) is bonded in a tetrahedral geometry to one O(2), one O(3), one O(4), and one O(5) atom. There are five inequivalent O sites. In the first O site, O(3) is bonded in a distorted trigonal planar geometry to one Yb(1), one Yb(2), and one Si(1) atom. In the second O site, O(4) is bonded in a 4-coordinate geometry to one Yb(2), two equivalent Yb(1), and one Si(1) atom. In the third O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Yb(2), two equivalent Yb(1), and one Si(1) atom. In the fourth O site, O(1) is bonded in a 4-coordinate geometry to one Yb(2), two equivalent Yb(1), and one O(1) atom. In the fifth O site, O(2) is bonded in a 4-coordinate geometry to one Yb(1), two equivalent Yb(2), and one Si(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Yb2SiO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.534
_cell_length_b   8.534
_cell_length_c   11.208
_cell_angle_alpha   54.902
_cell_angle_beta   54.902
_cell_angle_gamma   43.829
_symmetry_Int_Tables_number   1
_cell_volume   443.628
_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
  Yb  Yb0  1  0.241  0.892  0.547  1.0
  Yb  Yb1  1  0.108  0.759  0.953  1.0
  Yb  Yb2  1  0.759  0.108  0.453  1.0
  Yb  Yb3  1  0.892  0.241  0.047  1.0
  Yb  Yb4  1  0.206  0.451  0.313  1.0
  Yb  Yb5  1  0.549  0.794  0.187  1.0
  Yb  Yb6  1  0.794  0.549  0.687  1.0
  Yb  Yb7  1  0.451  0.206  0.813  1.0
  Si  Si8  1  0.746  0.914  0.313  1.0
  Si  Si9  1  0.086  0.254  0.187  1.0
  Si  Si10  1  0.254  0.086  0.687  1.0
  Si  Si11  1  0.914  0.746  0.813  1.0
  O  O12  1  0.464  0.573  0.028  1.0
  O  O13  1  0.427  0.536  0.472  1.0
  O  O14  1  0.536  0.427  0.972  1.0
  O  O15  1  0.573  0.464  0.528  1.0
  O  O16  1  0.873  0.763  0.448  1.0
  O  O17  1  0.237  0.127  0.052  1.0
  O  O18  1  0.127  0.237  0.552  1.0
  O  O19  1  0.763  0.873  0.948  1.0
  O  O20  1  0.590  0.842  0.344  1.0
  O  O21  1  0.158  0.410  0.156  1.0
  O  O22  1  0.410  0.158  0.656  1.0
  O  O23  1  0.842  0.590  0.844  1.0
  O  O24  1  0.973  0.856  0.159  1.0
  O  O25  1  0.144  0.027  0.341  1.0
  O  O26  1  0.027  0.144  0.841  1.0
  O  O27  1  0.856  0.973  0.659  1.0
  O  O28  1  0.597  0.195  0.289  1.0
  O  O29  1  0.805  0.403  0.211  1.0
  O  O30  1  0.403  0.805  0.711  1.0
  O  O31  1  0.195  0.597  0.789  1.0
[/CIF]
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The compound described by Yb2SiO5 crystallizes in the monoclinic C2/c space group. There are two inequivalent Yb sites. In the first Yb site, Yb(1) is bonded in a 8-coordinate geometry to one O(2), one O(3), two equivalent O(1), two equivalent O(4), and two equivalent O(5) atoms. In the second Yb site, Yb(2) is bonded in a 6-coordinate geometry to one O(1), one O(3), one O(4), one O(5), and two equivalent O(2) atoms. Si(1) is bonded in a tetrahedral geometry to one O(2), one O(3), one O(4), and one O(5) atom. There are five inequivalent O sites. In the first O site, O(3) is bonded in a distorted trigonal planar geometry to one Yb(1), one Yb(2), and one Si(1) atom. In the second O site, O(4) is bonded in a 4-coordinate geometry to one Yb(2), two equivalent Yb(1), and one Si(1) atom. In the third O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one Yb(2), two equivalent Yb(1), and one Si(1) atom. In the fourth O site, O(1) is bonded in a 4-coordinate geometry to one Yb(2), two equivalent Yb(1), and one O(1) atom. In the fifth O site, O(2) is bonded in a 4-coordinate geometry to one Yb(1), two equivalent Yb(2), and one Si(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Yb2SiO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.534
_cell_length_b   8.534
_cell_length_c   11.208
_cell_angle_alpha   54.902
_cell_angle_beta   54.902
_cell_angle_gamma   43.829
_symmetry_Int_Tables_number   1
_cell_volume   443.628
_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
  Yb  Yb0  1  0.241  0.892  0.547  1.0
  Yb  Yb1  1  0.108  0.759  0.953  1.0
  Yb  Yb2  1  0.759  0.108  0.453  1.0
  Yb  Yb3  1  0.892  0.241  0.047  1.0
  Yb  Yb4  1  0.206  0.451  0.313  1.0
  Yb  Yb5  1  0.549  0.794  0.187  1.0
  Yb  Yb6  1  0.794  0.549  0.687  1.0
  Yb  Yb7  1  0.451  0.206  0.813  1.0
  Si  Si8  1  0.746  0.914  0.313  1.0
  Si  Si9  1  0.086  0.254  0.187  1.0
  Si  Si10  1  0.254  0.086  0.687  1.0
  Si  Si11  1  0.914  0.746  0.813  1.0
  O  O12  1  0.464  0.573  0.028  1.0
  O  O13  1  0.427  0.536  0.472  1.0
  O  O14  1  0.536  0.427  0.972  1.0
  O  O15  1  0.573  0.464  0.528  1.0
  O  O16  1  0.873  0.763  0.448  1.0
  O  O17  1  0.237  0.127  0.052  1.0
  O  O18  1  0.127  0.237  0.552  1.0
  O  O19  1  0.763  0.873  0.948  1.0
  O  O20  1  0.590  0.842  0.344  1.0
  O  O21  1  0.158  0.410  0.156  1.0
  O  O22  1  0.410  0.158  0.656  1.0
  O  O23  1  0.842  0.590  0.844  1.0
  O  O24  1  0.973  0.856  0.159  1.0
  O  O25  1  0.144  0.027  0.341  1.0
  O  O26  1  0.027  0.144  0.841  1.0
  O  O27  1  0.856  0.973  0.659  1.0
  O  O28  1  0.597  0.195  0.289  1.0
  O  O29  1  0.805  0.403  0.211  1.0
  O  O30  1  0.403  0.805  0.711  1.0
  O  O31  1  0.195  0.597  0.789  1.0
[/CIF]
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