The crystal structure described by MgCrAsO5 crystallizes in the orthorhombic P2_12_12_1 space group. Mg(1) is bonded in a distorted see-saw-like geometry to one O(2), one O(3), one O(4), and one O(5) atom. Cr(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(5) atoms to form CrO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra and edges with two equivalent Cr(1)O6 octahedra. As(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form AsO4 tetrahedra that share corners with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 41-62°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Cr(1) and one As(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Mg(1) and one As(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1), one Cr(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mg(1), one Cr(1), and one As(1) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to one Mg(1) and two equivalent Cr(1) atoms. is represented by the CIF file [CIF]
data_MgCrAsO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.050
_cell_length_b   7.722
_cell_length_c   8.496
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   396.936
_cell_formula_units_Z   4
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  0.053  0.826  0.685  1.0
  Mg  Mg1  1  0.447  0.174  0.185  1.0
  Mg  Mg2  1  0.947  0.326  0.815  1.0
  Mg  Mg3  1  0.553  0.674  0.315  1.0
  Cr  Cr4  1  0.257  0.755  0.000  1.0
  Cr  Cr5  1  0.243  0.245  0.500  1.0
  Cr  Cr6  1  0.743  0.255  0.500  1.0
  Cr  Cr7  1  0.757  0.745  1.000  1.0
  As  As8  1  0.482  0.101  0.820  1.0
  As  As9  1  0.018  0.899  0.320  1.0
  As  As10  1  0.518  0.601  0.680  1.0
  As  As11  1  0.982  0.399  0.180  1.0
  O  O12  1  0.510  0.903  0.917  1.0
  O  O13  1  0.990  0.097  0.417  1.0
  O  O14  1  0.490  0.403  0.583  1.0
  O  O15  1  0.010  0.597  0.083  1.0
  O  O16  1  0.430  0.248  0.963  1.0
  O  O17  1  0.070  0.752  0.463  1.0
  O  O18  1  0.570  0.748  0.537  1.0
  O  O19  1  0.930  0.252  0.037  1.0
  O  O20  1  0.728  0.140  0.722  1.0
  O  O21  1  0.772  0.860  0.222  1.0
  O  O22  1  0.272  0.640  0.778  1.0
  O  O23  1  0.228  0.360  0.278  1.0
  O  O24  1  0.254  0.087  0.697  1.0
  O  O25  1  0.246  0.913  0.197  1.0
  O  O26  1  0.746  0.587  0.803  1.0
  O  O27  1  0.754  0.413  0.303  1.0
  O  O28  1  0.000  0.871  0.906  1.0
  O  O29  1  0.500  0.129  0.406  1.0
  O  O30  1  1.000  0.371  0.594  1.0
  O  O31  1  0.500  0.629  0.094  1.0
[/CIF]
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The crystal structure described by MgCrAsO5 crystallizes in the orthorhombic P2_12_12_1 space group. Mg(1) is bonded in a distorted see-saw-like geometry to one O(2), one O(3), one O(4), and one O(5) atom. Cr(1) is bonded to one O(3), one O(4), two equivalent O(1), and two equivalent O(5) atoms to form CrO6 octahedra that share corners with four equivalent As(1)O4 tetrahedra and edges with two equivalent Cr(1)O6 octahedra. As(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form AsO4 tetrahedra that share corners with four equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 41-62°. There are five inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to two equivalent Cr(1) and one As(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Mg(1) and one As(1) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one Mg(1), one Cr(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one Mg(1), one Cr(1), and one As(1) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to one Mg(1) and two equivalent Cr(1) atoms. is represented by the CIF file [CIF]
data_MgCrAsO5
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.050
_cell_length_b   7.722
_cell_length_c   8.496
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   396.936
_cell_formula_units_Z   4
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  0.053  0.826  0.685  1.0
  Mg  Mg1  1  0.447  0.174  0.185  1.0
  Mg  Mg2  1  0.947  0.326  0.815  1.0
  Mg  Mg3  1  0.553  0.674  0.315  1.0
  Cr  Cr4  1  0.257  0.755  0.000  1.0
  Cr  Cr5  1  0.243  0.245  0.500  1.0
  Cr  Cr6  1  0.743  0.255  0.500  1.0
  Cr  Cr7  1  0.757  0.745  1.000  1.0
  As  As8  1  0.482  0.101  0.820  1.0
  As  As9  1  0.018  0.899  0.320  1.0
  As  As10  1  0.518  0.601  0.680  1.0
  As  As11  1  0.982  0.399  0.180  1.0
  O  O12  1  0.510  0.903  0.917  1.0
  O  O13  1  0.990  0.097  0.417  1.0
  O  O14  1  0.490  0.403  0.583  1.0
  O  O15  1  0.010  0.597  0.083  1.0
  O  O16  1  0.430  0.248  0.963  1.0
  O  O17  1  0.070  0.752  0.463  1.0
  O  O18  1  0.570  0.748  0.537  1.0
  O  O19  1  0.930  0.252  0.037  1.0
  O  O20  1  0.728  0.140  0.722  1.0
  O  O21  1  0.772  0.860  0.222  1.0
  O  O22  1  0.272  0.640  0.778  1.0
  O  O23  1  0.228  0.360  0.278  1.0
  O  O24  1  0.254  0.087  0.697  1.0
  O  O25  1  0.246  0.913  0.197  1.0
  O  O26  1  0.746  0.587  0.803  1.0
  O  O27  1  0.754  0.413  0.303  1.0
  O  O28  1  0.000  0.871  0.906  1.0
  O  O29  1  0.500  0.129  0.406  1.0
  O  O30  1  1.000  0.371  0.594  1.0
  O  O31  1  0.500  0.629  0.094  1.0
[/CIF]
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