The structure described by MgCr4O10 crystallizes in the monoclinic Pm space group. Mg(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(5), and four equivalent O(4) atoms. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(6), and two equivalent O(1) atoms. In the second Cr site, Cr(2) is bonded to one O(1), one O(4), one O(5), and two equivalent O(2) atoms to form distorted corner-sharing CrO5 trigonal bipyramids. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Cr(2) and two equivalent Cr(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Cr(1), and two equivalent Cr(2) atoms. In the third O site, O(3) is bonded in a single-bond geometry to one Cr(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Mg(1) and one Cr(2) atom. In the fifth O site, O(5) is bonded to two equivalent Mg(1) and two equivalent Cr(2) atoms to form corner-sharing OMg2Cr2 tetrahedra. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to two equivalent Cr(1) atoms. is represented by the CIF card [CIF]
data_MgCr4O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.705
_cell_length_b   4.767
_cell_length_c   10.940
_cell_angle_alpha   90.007
_cell_angle_beta   89.994
_cell_angle_gamma   90.217
_symmetry_Int_Tables_number   1
_cell_volume   193.200
_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
  Mg  Mg0  1  0.013  0.657  0.500  1.0
  Cr  Cr1  1  0.018  0.890  0.154  1.0
  Cr  Cr2  1  0.518  0.100  0.346  1.0
  Cr  Cr3  1  0.518  0.100  0.654  1.0
  Cr  Cr4  1  0.019  0.890  0.846  1.0
  O  O5  1  0.519  0.993  0.178  1.0
  O  O6  1  0.018  0.998  0.325  1.0
  O  O7  1  0.018  0.998  0.675  1.0
  O  O8  1  0.519  0.993  0.822  1.0
  O  O9  1  0.018  0.558  0.849  1.0
  O  O10  1  0.523  0.451  0.620  1.0
  O  O11  1  0.522  0.451  0.380  1.0
  O  O12  1  0.517  0.920  0.500  1.0
  O  O13  1  0.019  0.028  0.000  1.0
  O  O14  1  0.018  0.558  0.151  1.0
[/CIF]
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The structure described by MgCr4O10 crystallizes in the monoclinic Pm space group. Mg(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(5), and four equivalent O(4) atoms. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 5-coordinate geometry to one O(2), one O(3), one O(6), and two equivalent O(1) atoms. In the second Cr site, Cr(2) is bonded to one O(1), one O(4), one O(5), and two equivalent O(2) atoms to form distorted corner-sharing CrO5 trigonal bipyramids. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted T-shaped geometry to one Cr(2) and two equivalent Cr(1) atoms. In the second O site, O(2) is bonded in a 4-coordinate geometry to one Mg(1), one Cr(1), and two equivalent Cr(2) atoms. In the third O site, O(3) is bonded in a single-bond geometry to one Cr(1) atom. In the fourth O site, O(4) is bonded in a distorted single-bond geometry to two equivalent Mg(1) and one Cr(2) atom. In the fifth O site, O(5) is bonded to two equivalent Mg(1) and two equivalent Cr(2) atoms to form corner-sharing OMg2Cr2 tetrahedra. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to two equivalent Cr(1) atoms. is represented by the CIF card [CIF]
data_MgCr4O10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.705
_cell_length_b   4.767
_cell_length_c   10.940
_cell_angle_alpha   90.007
_cell_angle_beta   89.994
_cell_angle_gamma   90.217
_symmetry_Int_Tables_number   1
_cell_volume   193.200
_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
  Mg  Mg0  1  0.013  0.657  0.500  1.0
  Cr  Cr1  1  0.018  0.890  0.154  1.0
  Cr  Cr2  1  0.518  0.100  0.346  1.0
  Cr  Cr3  1  0.518  0.100  0.654  1.0
  Cr  Cr4  1  0.019  0.890  0.846  1.0
  O  O5  1  0.519  0.993  0.178  1.0
  O  O6  1  0.018  0.998  0.325  1.0
  O  O7  1  0.018  0.998  0.675  1.0
  O  O8  1  0.519  0.993  0.822  1.0
  O  O9  1  0.018  0.558  0.849  1.0
  O  O10  1  0.523  0.451  0.620  1.0
  O  O11  1  0.522  0.451  0.380  1.0
  O  O12  1  0.517  0.920  0.500  1.0
  O  O13  1  0.019  0.028  0.000  1.0
  O  O14  1  0.018  0.558  0.151  1.0
[/CIF]
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