The compound described by U(Cr3P2)2 crystallizes in the hexagonal P-6m2 space group. U(1) is bonded to six equivalent Cr(1) and six equivalent P(2) atoms to form distorted UCr6P6 cuboctahedra that share edges with six equivalent Cr(1)U2P4 tetrahedra and faces with two equivalent U(1)Cr6P6 cuboctahedra. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to two equivalent U(1), two equivalent P(1), and two equivalent P(2) atoms to form distorted CrU2P4 tetrahedra that share corners with eight equivalent Cr(1)U2P4 tetrahedra, edges with two equivalent U(1)Cr6P6 cuboctahedra, edges with four equivalent Cr(1)U2P4 tetrahedra, and faces with two equivalent Cr(1)U2P4 tetrahedra. In the second Cr site, Cr(2) is bonded in a 5-coordinate geometry to one P(1) and four equivalent P(2) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to three equivalent Cr(2) and six equivalent Cr(1) atoms. In the second P site, P(2) is bonded in a 8-coordinate geometry to two equivalent U(1), two equivalent Cr(1), and four equivalent Cr(2) atoms. is represented by the CIF file [CIF]
data_U(Cr3P2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.001
_cell_length_b   7.002
_cell_length_c   3.464
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.001
_symmetry_Int_Tables_number   1
_cell_volume   147.052
_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
  U  U0  1  0.000  0.000  0.000  1.0
  Cr  Cr1  1  0.797  0.594  0.500  1.0
  Cr  Cr2  1  0.072  0.536  0.000  1.0
  Cr  Cr3  1  0.464  0.928  0.000  1.0
  Cr  Cr4  1  0.797  0.203  0.500  1.0
  Cr  Cr5  1  0.464  0.536  0.000  1.0
  Cr  Cr6  1  0.406  0.203  0.500  1.0
  P  P7  1  0.667  0.333  0.000  1.0
  P  P8  1  0.186  0.814  0.500  1.0
  P  P9  1  0.186  0.373  0.500  1.0
  P  P10  1  0.627  0.814  0.500  1.0
[/CIF]
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The compound described by U(Cr3P2)2 crystallizes in the hexagonal P-6m2 space group. U(1) is bonded to six equivalent Cr(1) and six equivalent P(2) atoms to form distorted UCr6P6 cuboctahedra that share edges with six equivalent Cr(1)U2P4 tetrahedra and faces with two equivalent U(1)Cr6P6 cuboctahedra. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to two equivalent U(1), two equivalent P(1), and two equivalent P(2) atoms to form distorted CrU2P4 tetrahedra that share corners with eight equivalent Cr(1)U2P4 tetrahedra, edges with two equivalent U(1)Cr6P6 cuboctahedra, edges with four equivalent Cr(1)U2P4 tetrahedra, and faces with two equivalent Cr(1)U2P4 tetrahedra. In the second Cr site, Cr(2) is bonded in a 5-coordinate geometry to one P(1) and four equivalent P(2) atoms. There are two inequivalent P sites. In the first P site, P(1) is bonded in a 9-coordinate geometry to three equivalent Cr(2) and six equivalent Cr(1) atoms. In the second P site, P(2) is bonded in a 8-coordinate geometry to two equivalent U(1), two equivalent Cr(1), and four equivalent Cr(2) atoms. is represented by the CIF file [CIF]
data_U(Cr3P2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.001
_cell_length_b   7.002
_cell_length_c   3.464
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.001
_symmetry_Int_Tables_number   1
_cell_volume   147.052
_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
  U  U0  1  0.000  0.000  0.000  1.0
  Cr  Cr1  1  0.797  0.594  0.500  1.0
  Cr  Cr2  1  0.072  0.536  0.000  1.0
  Cr  Cr3  1  0.464  0.928  0.000  1.0
  Cr  Cr4  1  0.797  0.203  0.500  1.0
  Cr  Cr5  1  0.464  0.536  0.000  1.0
  Cr  Cr6  1  0.406  0.203  0.500  1.0
  P  P7  1  0.667  0.333  0.000  1.0
  P  P8  1  0.186  0.814  0.500  1.0
  P  P9  1  0.186  0.373  0.500  1.0
  P  P10  1  0.627  0.814  0.500  1.0
[/CIF]
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