The structure described by RbMgCrF6 crystallizes in the orthorhombic Imma space group. Rb(1) is bonded to one F(1), one F(2), and four equivalent F(3) atoms to form RbF6 octahedra that share corners with six equivalent Mg(1)F6 octahedra and corners with six equivalent Cr(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 68-69°. Mg(1) is bonded to two equivalent F(2) and four equivalent F(3) atoms to form MgF6 octahedra that share corners with two equivalent Mg(1)F6 octahedra, corners with four equivalent Cr(1)F6 octahedra, and corners with six equivalent Rb(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 43-69°. Cr(1) is bonded to two equivalent F(1) and four equivalent F(3) atoms to form CrF6 octahedra that share corners with two equivalent Cr(1)F6 octahedra, corners with four equivalent Mg(1)F6 octahedra, and corners with six equivalent Rb(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 42-69°. There are three inequivalent F sites. In the first F site, F(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and two equivalent Cr(1) atoms. In the second F site, F(2) is bonded in a 2-coordinate geometry to one Rb(1) and two equivalent Mg(1) atoms. In the third F site, F(3) is bonded in a 2-coordinate geometry to one Rb(1), one Mg(1), and one Cr(1) atom. is represented by the CIF card [CIF]
data_RbMgCrF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.350
_cell_length_b   7.350
_cell_length_c   7.350
_cell_angle_alpha   120.326
_cell_angle_beta   120.012
_cell_angle_gamma   89.708
_symmetry_Int_Tables_number   1
_cell_volume   280.027
_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
  Rb  Rb0  1  0.371  0.621  0.750  1.0
  Rb  Rb1  1  0.629  0.379  0.250  1.0
  Mg  Mg2  1  0.000  0.000  0.500  1.0
  Mg  Mg3  1  0.000  0.500  0.000  1.0
  Cr  Cr4  1  0.000  0.000  0.000  1.0
  Cr  Cr5  1  0.500  0.000  0.500  1.0
  F  F6  1  0.318  0.068  0.250  1.0
  F  F7  1  0.930  0.680  0.250  1.0
  F  F8  1  0.326  0.686  0.258  1.0
  F  F9  1  0.928  0.068  0.242  1.0
  F  F10  1  0.326  0.068  0.640  1.0
  F  F11  1  0.928  0.686  0.860  1.0
  F  F12  1  0.682  0.932  0.750  1.0
  F  F13  1  0.070  0.320  0.750  1.0
  F  F14  1  0.674  0.314  0.742  1.0
  F  F15  1  0.072  0.932  0.758  1.0
  F  F16  1  0.674  0.932  0.360  1.0
  F  F17  1  0.072  0.314  0.140  1.0
[/CIF]
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The structure described by RbMgCrF6 crystallizes in the orthorhombic Imma space group. Rb(1) is bonded to one F(1), one F(2), and four equivalent F(3) atoms to form RbF6 octahedra that share corners with six equivalent Mg(1)F6 octahedra and corners with six equivalent Cr(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 68-69°. Mg(1) is bonded to two equivalent F(2) and four equivalent F(3) atoms to form MgF6 octahedra that share corners with two equivalent Mg(1)F6 octahedra, corners with four equivalent Cr(1)F6 octahedra, and corners with six equivalent Rb(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 43-69°. Cr(1) is bonded to two equivalent F(1) and four equivalent F(3) atoms to form CrF6 octahedra that share corners with two equivalent Cr(1)F6 octahedra, corners with four equivalent Mg(1)F6 octahedra, and corners with six equivalent Rb(1)F6 octahedra. The corner-sharing octahedral tilt angles range from 42-69°. There are three inequivalent F sites. In the first F site, F(1) is bonded in a distorted bent 150 degrees geometry to one Rb(1) and two equivalent Cr(1) atoms. In the second F site, F(2) is bonded in a 2-coordinate geometry to one Rb(1) and two equivalent Mg(1) atoms. In the third F site, F(3) is bonded in a 2-coordinate geometry to one Rb(1), one Mg(1), and one Cr(1) atom. is represented by the CIF card [CIF]
data_RbMgCrF6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.350
_cell_length_b   7.350
_cell_length_c   7.350
_cell_angle_alpha   120.326
_cell_angle_beta   120.012
_cell_angle_gamma   89.708
_symmetry_Int_Tables_number   1
_cell_volume   280.027
_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
  Rb  Rb0  1  0.371  0.621  0.750  1.0
  Rb  Rb1  1  0.629  0.379  0.250  1.0
  Mg  Mg2  1  0.000  0.000  0.500  1.0
  Mg  Mg3  1  0.000  0.500  0.000  1.0
  Cr  Cr4  1  0.000  0.000  0.000  1.0
  Cr  Cr5  1  0.500  0.000  0.500  1.0
  F  F6  1  0.318  0.068  0.250  1.0
  F  F7  1  0.930  0.680  0.250  1.0
  F  F8  1  0.326  0.686  0.258  1.0
  F  F9  1  0.928  0.068  0.242  1.0
  F  F10  1  0.326  0.068  0.640  1.0
  F  F11  1  0.928  0.686  0.860  1.0
  F  F12  1  0.682  0.932  0.750  1.0
  F  F13  1  0.070  0.320  0.750  1.0
  F  F14  1  0.674  0.314  0.742  1.0
  F  F15  1  0.072  0.932  0.758  1.0
  F  F16  1  0.674  0.932  0.360  1.0
  F  F17  1  0.072  0.314  0.140  1.0
[/CIF]
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