The material structure described by NaCr2FeO10 crystallizes in the monoclinic C2/c space group. Na(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Cr(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form CrO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 35-48°. Fe(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form FeO6 octahedra that share corners with four equivalent Cr(1)O4 tetrahedra. There are five inequivalent O sites. In the first O site, O(5) is bonded in a single-bond geometry to one Fe(1) atom. In the second O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Na(1), one Cr(1), and one Fe(1) atom. In the third O site, O(2) is bonded in a distorted trigonal planar geometry to one Na(1), one Cr(1), and one Fe(1) atom. In the fourth O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Na(1) and one Cr(1) atom. In the fifth O site, O(4) is bonded in a single-bond geometry to one Na(1) and one Cr(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_NaCr2FeO10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.647
_cell_length_b   7.647
_cell_length_c   10.728
_cell_angle_alpha   72.143
_cell_angle_beta   72.143
_cell_angle_gamma   42.556
_symmetry_Int_Tables_number   1
_cell_volume   400.597
_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
  Na  Na0  1  0.793  0.207  0.250  1.0
  Na  Na1  1  0.207  0.793  0.750  1.0
  Cr  Cr2  1  0.365  0.832  0.038  1.0
  Cr  Cr3  1  0.168  0.635  0.462  1.0
  Cr  Cr4  1  0.635  0.168  0.962  1.0
  Cr  Cr5  1  0.832  0.365  0.538  1.0
  Fe  Fe6  1  0.000  0.500  0.000  1.0
  Fe  Fe7  1  0.500  0.000  0.500  1.0
  O  O8  1  0.130  0.199  0.574  1.0
  O  O9  1  0.801  0.870  0.926  1.0
  O  O10  1  0.870  0.801  0.426  1.0
  O  O11  1  0.199  0.130  0.074  1.0
  O  O12  1  0.679  0.590  0.084  1.0
  O  O13  1  0.410  0.321  0.416  1.0
  O  O14  1  0.321  0.410  0.916  1.0
  O  O15  1  0.590  0.679  0.584  1.0
  O  O16  1  0.844  0.373  0.383  1.0
  O  O17  1  0.627  0.156  0.117  1.0
  O  O18  1  0.156  0.627  0.617  1.0
  O  O19  1  0.373  0.844  0.883  1.0
  O  O20  1  0.209  0.757  0.125  1.0
  O  O21  1  0.243  0.791  0.375  1.0
  O  O22  1  0.791  0.243  0.875  1.0
  O  O23  1  0.757  0.209  0.625  1.0
  O  O24  1  0.015  0.548  0.153  1.0
  O  O25  1  0.452  0.985  0.347  1.0
  O  O26  1  0.985  0.452  0.847  1.0
  O  O27  1  0.548  0.015  0.653  1.0
[/CIF]
.
The material structure described by NaCr2FeO10 crystallizes in the monoclinic C2/c space group. Na(1) is bonded in a 8-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms. Cr(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form CrO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 35-48°. Fe(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(5) atoms to form FeO6 octahedra that share corners with four equivalent Cr(1)O4 tetrahedra. There are five inequivalent O sites. In the first O site, O(5) is bonded in a single-bond geometry to one Fe(1) atom. In the second O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Na(1), one Cr(1), and one Fe(1) atom. In the third O site, O(2) is bonded in a distorted trigonal planar geometry to one Na(1), one Cr(1), and one Fe(1) atom. In the fourth O site, O(3) is bonded in a distorted bent 150 degrees geometry to one Na(1) and one Cr(1) atom. In the fifth O site, O(4) is bonded in a single-bond geometry to one Na(1) and one Cr(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_NaCr2FeO10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.647
_cell_length_b   7.647
_cell_length_c   10.728
_cell_angle_alpha   72.143
_cell_angle_beta   72.143
_cell_angle_gamma   42.556
_symmetry_Int_Tables_number   1
_cell_volume   400.597
_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
  Na  Na0  1  0.793  0.207  0.250  1.0
  Na  Na1  1  0.207  0.793  0.750  1.0
  Cr  Cr2  1  0.365  0.832  0.038  1.0
  Cr  Cr3  1  0.168  0.635  0.462  1.0
  Cr  Cr4  1  0.635  0.168  0.962  1.0
  Cr  Cr5  1  0.832  0.365  0.538  1.0
  Fe  Fe6  1  0.000  0.500  0.000  1.0
  Fe  Fe7  1  0.500  0.000  0.500  1.0
  O  O8  1  0.130  0.199  0.574  1.0
  O  O9  1  0.801  0.870  0.926  1.0
  O  O10  1  0.870  0.801  0.426  1.0
  O  O11  1  0.199  0.130  0.074  1.0
  O  O12  1  0.679  0.590  0.084  1.0
  O  O13  1  0.410  0.321  0.416  1.0
  O  O14  1  0.321  0.410  0.916  1.0
  O  O15  1  0.590  0.679  0.584  1.0
  O  O16  1  0.844  0.373  0.383  1.0
  O  O17  1  0.627  0.156  0.117  1.0
  O  O18  1  0.156  0.627  0.617  1.0
  O  O19  1  0.373  0.844  0.883  1.0
  O  O20  1  0.209  0.757  0.125  1.0
  O  O21  1  0.243  0.791  0.375  1.0
  O  O22  1  0.791  0.243  0.875  1.0
  O  O23  1  0.757  0.209  0.625  1.0
  O  O24  1  0.015  0.548  0.153  1.0
  O  O25  1  0.452  0.985  0.347  1.0
  O  O26  1  0.985  0.452  0.847  1.0
  O  O27  1  0.548  0.015  0.653  1.0
[/CIF]
.