The compound described by Cr2(WO4)3 crystallizes in the trigonal R-3 space group. W(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form WO4 tetrahedra that share corners with two equivalent Cr(1)O6 octahedra and corners with two equivalent Cr(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 23-41°. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form CrO6 octahedra that share corners with six equivalent W(1)O4 tetrahedra. In the second Cr site, Cr(2) is bonded to three equivalent O(3) and three equivalent O(4) atoms to form CrO6 octahedra that share corners with six equivalent W(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(3) is bonded in a bent 150 degrees geometry to one W(1) and one Cr(2) atom. In the second O site, O(4) is bonded in a bent 150 degrees geometry to one W(1) and one Cr(2) atom. In the third O site, O(1) is bonded in a bent 150 degrees geometry to one W(1) and one Cr(1) atom. In the fourth O site, O(2) is bonded in a bent 150 degrees geometry to one W(1) and one Cr(1) atom. is represented by the CIF card [CIF]
data_Cr2(WO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.687
_cell_length_b   9.687
_cell_length_c   9.687
_cell_angle_alpha   56.300
_cell_angle_beta   56.300
_cell_angle_gamma   56.300
_symmetry_Int_Tables_number   1
_cell_volume   587.765
_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
  Cr  Cr0  1  0.141  0.141  0.141  1.0
  Cr  Cr1  1  0.353  0.353  0.353  1.0
  Cr  Cr2  1  0.647  0.647  0.647  1.0
  Cr  Cr3  1  0.859  0.859  0.859  1.0
  W  W4  1  0.969  0.250  0.535  1.0
  W  W5  1  0.465  0.031  0.750  1.0
  W  W6  1  0.750  0.465  0.031  1.0
  W  W7  1  0.250  0.535  0.969  1.0
  W  W8  1  0.535  0.969  0.250  1.0
  W  W9  1  0.031  0.750  0.465  1.0
  O  O10  1  0.006  0.197  0.362  1.0
  O  O11  1  0.884  0.093  0.747  1.0
  O  O12  1  0.907  0.253  0.116  1.0
  O  O13  1  0.638  0.994  0.803  1.0
  O  O14  1  0.810  0.474  0.519  1.0
  O  O15  1  0.511  0.182  0.223  1.0
  O  O16  1  0.481  0.190  0.526  1.0
  O  O17  1  0.777  0.489  0.818  1.0
  O  O18  1  0.803  0.638  0.994  1.0
  O  O19  1  0.253  0.116  0.907  1.0
  O  O20  1  0.818  0.777  0.489  1.0
  O  O21  1  0.526  0.481  0.190  1.0
  O  O22  1  0.474  0.519  0.810  1.0
  O  O23  1  0.182  0.223  0.511  1.0
  O  O24  1  0.747  0.884  0.093  1.0
  O  O25  1  0.197  0.362  0.006  1.0
  O  O26  1  0.223  0.511  0.182  1.0
  O  O27  1  0.519  0.810  0.474  1.0
  O  O28  1  0.489  0.818  0.777  1.0
  O  O29  1  0.190  0.526  0.481  1.0
  O  O30  1  0.362  0.006  0.197  1.0
  O  O31  1  0.093  0.747  0.884  1.0
  O  O32  1  0.116  0.907  0.253  1.0
  O  O33  1  0.994  0.803  0.638  1.0
[/CIF]
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The compound described by Cr2(WO4)3 crystallizes in the trigonal R-3 space group. W(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form WO4 tetrahedra that share corners with two equivalent Cr(1)O6 octahedra and corners with two equivalent Cr(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 23-41°. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to three equivalent O(1) and three equivalent O(2) atoms to form CrO6 octahedra that share corners with six equivalent W(1)O4 tetrahedra. In the second Cr site, Cr(2) is bonded to three equivalent O(3) and three equivalent O(4) atoms to form CrO6 octahedra that share corners with six equivalent W(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(3) is bonded in a bent 150 degrees geometry to one W(1) and one Cr(2) atom. In the second O site, O(4) is bonded in a bent 150 degrees geometry to one W(1) and one Cr(2) atom. In the third O site, O(1) is bonded in a bent 150 degrees geometry to one W(1) and one Cr(1) atom. In the fourth O site, O(2) is bonded in a bent 150 degrees geometry to one W(1) and one Cr(1) atom. is represented by the CIF card [CIF]
data_Cr2(WO4)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.687
_cell_length_b   9.687
_cell_length_c   9.687
_cell_angle_alpha   56.300
_cell_angle_beta   56.300
_cell_angle_gamma   56.300
_symmetry_Int_Tables_number   1
_cell_volume   587.765
_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
  Cr  Cr0  1  0.141  0.141  0.141  1.0
  Cr  Cr1  1  0.353  0.353  0.353  1.0
  Cr  Cr2  1  0.647  0.647  0.647  1.0
  Cr  Cr3  1  0.859  0.859  0.859  1.0
  W  W4  1  0.969  0.250  0.535  1.0
  W  W5  1  0.465  0.031  0.750  1.0
  W  W6  1  0.750  0.465  0.031  1.0
  W  W7  1  0.250  0.535  0.969  1.0
  W  W8  1  0.535  0.969  0.250  1.0
  W  W9  1  0.031  0.750  0.465  1.0
  O  O10  1  0.006  0.197  0.362  1.0
  O  O11  1  0.884  0.093  0.747  1.0
  O  O12  1  0.907  0.253  0.116  1.0
  O  O13  1  0.638  0.994  0.803  1.0
  O  O14  1  0.810  0.474  0.519  1.0
  O  O15  1  0.511  0.182  0.223  1.0
  O  O16  1  0.481  0.190  0.526  1.0
  O  O17  1  0.777  0.489  0.818  1.0
  O  O18  1  0.803  0.638  0.994  1.0
  O  O19  1  0.253  0.116  0.907  1.0
  O  O20  1  0.818  0.777  0.489  1.0
  O  O21  1  0.526  0.481  0.190  1.0
  O  O22  1  0.474  0.519  0.810  1.0
  O  O23  1  0.182  0.223  0.511  1.0
  O  O24  1  0.747  0.884  0.093  1.0
  O  O25  1  0.197  0.362  0.006  1.0
  O  O26  1  0.223  0.511  0.182  1.0
  O  O27  1  0.519  0.810  0.474  1.0
  O  O28  1  0.489  0.818  0.777  1.0
  O  O29  1  0.190  0.526  0.481  1.0
  O  O30  1  0.362  0.006  0.197  1.0
  O  O31  1  0.093  0.747  0.884  1.0
  O  O32  1  0.116  0.907  0.253  1.0
  O  O33  1  0.994  0.803  0.638  1.0
[/CIF]
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