The material structure described by GdCr3(BO3)4 is Calcite-derived structured and crystallizes in the trigonal R32 space group. Gd(1) is bonded in a 6-coordinate geometry to six equivalent O(3) atoms. Cr(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form edge-sharing CrO6 octahedra. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(2) and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Cr(1) and one B(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Cr(1) and one B(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Gd(1), one Cr(1), and one B(2) atom. is represented by the CIF file [CIF]
data_GdCr3(BO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.109
_cell_length_b   6.109
_cell_length_c   6.109
_cell_angle_alpha   103.973
_cell_angle_beta   103.973
_cell_angle_gamma   103.974
_symmetry_Int_Tables_number   1
_cell_volume   203.552
_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
  Gd  Gd0  1  0.500  0.500  0.500  1.0
  Cr  Cr1  1  0.052  0.500  0.948  1.0
  Cr  Cr2  1  0.948  0.052  0.500  1.0
  Cr  Cr3  1  0.500  0.948  0.052  1.0
  B  B4  1  0.000  0.000  0.000  1.0
  B  B5  1  0.447  0.000  0.553  1.0
  B  B6  1  0.553  0.447  0.000  1.0
  B  B7  1  0.000  0.553  0.447  1.0
  O  O8  1  0.856  0.000  0.144  1.0
  O  O9  1  0.144  0.856  0.000  1.0
  O  O10  1  0.000  0.144  0.856  1.0
  O  O11  1  0.591  0.000  0.409  1.0
  O  O12  1  0.409  0.591  0.000  1.0
  O  O13  1  0.000  0.409  0.591  1.0
  O  O14  1  0.472  0.870  0.708  1.0
  O  O15  1  0.708  0.472  0.870  1.0
  O  O16  1  0.870  0.708  0.472  1.0
  O  O17  1  0.292  0.130  0.528  1.0
  O  O18  1  0.130  0.528  0.292  1.0
  O  O19  1  0.528  0.292  0.130  1.0
[/CIF]
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The material structure described by GdCr3(BO3)4 is Calcite-derived structured and crystallizes in the trigonal R32 space group. Gd(1) is bonded in a 6-coordinate geometry to six equivalent O(3) atoms. Cr(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form edge-sharing CrO6 octahedra. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to three equivalent O(1) atoms. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(2) and two equivalent O(3) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Cr(1) and one B(1) atom. In the second O site, O(2) is bonded in a distorted trigonal planar geometry to two equivalent Cr(1) and one B(2) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Gd(1), one Cr(1), and one B(2) atom. is represented by the CIF file [CIF]
data_GdCr3(BO3)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.109
_cell_length_b   6.109
_cell_length_c   6.109
_cell_angle_alpha   103.973
_cell_angle_beta   103.973
_cell_angle_gamma   103.974
_symmetry_Int_Tables_number   1
_cell_volume   203.552
_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
  Gd  Gd0  1  0.500  0.500  0.500  1.0
  Cr  Cr1  1  0.052  0.500  0.948  1.0
  Cr  Cr2  1  0.948  0.052  0.500  1.0
  Cr  Cr3  1  0.500  0.948  0.052  1.0
  B  B4  1  0.000  0.000  0.000  1.0
  B  B5  1  0.447  0.000  0.553  1.0
  B  B6  1  0.553  0.447  0.000  1.0
  B  B7  1  0.000  0.553  0.447  1.0
  O  O8  1  0.856  0.000  0.144  1.0
  O  O9  1  0.144  0.856  0.000  1.0
  O  O10  1  0.000  0.144  0.856  1.0
  O  O11  1  0.591  0.000  0.409  1.0
  O  O12  1  0.409  0.591  0.000  1.0
  O  O13  1  0.000  0.409  0.591  1.0
  O  O14  1  0.472  0.870  0.708  1.0
  O  O15  1  0.708  0.472  0.870  1.0
  O  O16  1  0.870  0.708  0.472  1.0
  O  O17  1  0.292  0.130  0.528  1.0
  O  O18  1  0.130  0.528  0.292  1.0
  O  O19  1  0.528  0.292  0.130  1.0
[/CIF]
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