The crystal structure described by MgFeCuPbAs2O10 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(5), one O(7), and one O(9) atom to form MgO5 trigonal bipyramids that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, and  an edgeedge with one Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. Fe(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form FeO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. Cu(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(7), and one O(8) atom. Pb(1) is bonded in a 4-coordinate geometry to one O(10), one O(3), one O(6), and one O(8) atom. There are two inequivalent As sites. In the first As site, As(1) is bonded to one O(3), one O(6), one O(8), and one O(9) atom to form AsO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra and  a cornercorner with one Mg(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 37-53°. In the second As site, As(2) is bonded to one O(10), one O(4), one O(5), and one O(7) atom to form AsO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra and corners with two equivalent Mg(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 33-56°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mg(1), one Fe(1), and one Cu(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Mg(1), one Fe(1), and one Cu(1) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Fe(1), one Pb(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Fe(1) and one As(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mg(1), one Fe(1), and one As(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Fe(1), one Pb(1), and one As(1) atom. In the seventh O site, O(7) is bonded in a trigonal non-coplanar geometry to one Mg(1), one Cu(1), and one As(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Cu(1), one Pb(1), and one As(1) atom. In the ninth O site, O(9) is bonded in a linear geometry to one Mg(1) and one As(1) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one Pb(1) and one As(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgFeCuAs2PbO10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.640
_cell_length_b   6.086
_cell_length_c   7.522
_cell_angle_alpha   104.974
_cell_angle_beta   97.412
_cell_angle_gamma   112.602
_symmetry_Int_Tables_number   1
_cell_volume   222.553
_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  0.900  0.373  0.309  1.0
  Fe  Fe1  1  0.986  0.997  0.502  1.0
  Cu  Cu2  1  0.471  0.493  0.494  1.0
  As  As3  1  0.593  0.207  0.794  1.0
  As  As4  1  0.381  0.792  0.212  1.0
  Pb  Pb5  1  0.969  0.883  0.934  1.0
  O  O6  1  0.795  0.633  0.441  1.0
  O  O7  1  0.139  0.352  0.531  1.0
  O  O8  1  0.725  0.015  0.680  1.0
  O  O9  1  0.223  0.963  0.317  1.0
  O  O10  1  0.717  0.991  0.280  1.0
  O  O11  1  0.251  0.034  0.734  1.0
  O  O12  1  0.290  0.516  0.275  1.0
  O  O13  1  0.654  0.468  0.715  1.0
  O  O14  1  0.724  0.321  0.032  1.0
  O  O15  1  0.271  0.700  0.973  1.0
[/CIF]
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The crystal structure described by MgFeCuPbAs2O10 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(1), one O(2), one O(5), one O(7), and one O(9) atom to form MgO5 trigonal bipyramids that share  a cornercorner with one Fe(1)O6 octahedra,  a cornercorner with one As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra, and  an edgeedge with one Fe(1)O6 octahedra. The corner-sharing octahedral tilt angles are 53°. Fe(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form FeO6 octahedra that share corners with two equivalent As(1)O4 tetrahedra, corners with two equivalent As(2)O4 tetrahedra,  a cornercorner with one Mg(1)O5 trigonal bipyramid, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. Cu(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(7), and one O(8) atom. Pb(1) is bonded in a 4-coordinate geometry to one O(10), one O(3), one O(6), and one O(8) atom. There are two inequivalent As sites. In the first As site, As(1) is bonded to one O(3), one O(6), one O(8), and one O(9) atom to form AsO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra and  a cornercorner with one Mg(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 37-53°. In the second As site, As(2) is bonded to one O(10), one O(4), one O(5), and one O(7) atom to form AsO4 tetrahedra that share corners with two equivalent Fe(1)O6 octahedra and corners with two equivalent Mg(1)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 33-56°. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mg(1), one Fe(1), and one Cu(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Mg(1), one Fe(1), and one Cu(1) atom. In the third O site, O(3) is bonded in a 2-coordinate geometry to one Fe(1), one Pb(1), and one As(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Fe(1) and one As(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mg(1), one Fe(1), and one As(2) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Fe(1), one Pb(1), and one As(1) atom. In the seventh O site, O(7) is bonded in a trigonal non-coplanar geometry to one Mg(1), one Cu(1), and one As(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Cu(1), one Pb(1), and one As(1) atom. In the ninth O site, O(9) is bonded in a linear geometry to one Mg(1) and one As(1) atom. In the tenth O site, O(10) is bonded in a water-like geometry to one Pb(1) and one As(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgFeCuAs2PbO10
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.640
_cell_length_b   6.086
_cell_length_c   7.522
_cell_angle_alpha   104.974
_cell_angle_beta   97.412
_cell_angle_gamma   112.602
_symmetry_Int_Tables_number   1
_cell_volume   222.553
_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  0.900  0.373  0.309  1.0
  Fe  Fe1  1  0.986  0.997  0.502  1.0
  Cu  Cu2  1  0.471  0.493  0.494  1.0
  As  As3  1  0.593  0.207  0.794  1.0
  As  As4  1  0.381  0.792  0.212  1.0
  Pb  Pb5  1  0.969  0.883  0.934  1.0
  O  O6  1  0.795  0.633  0.441  1.0
  O  O7  1  0.139  0.352  0.531  1.0
  O  O8  1  0.725  0.015  0.680  1.0
  O  O9  1  0.223  0.963  0.317  1.0
  O  O10  1  0.717  0.991  0.280  1.0
  O  O11  1  0.251  0.034  0.734  1.0
  O  O12  1  0.290  0.516  0.275  1.0
  O  O13  1  0.654  0.468  0.715  1.0
  O  O14  1  0.724  0.321  0.032  1.0
  O  O15  1  0.271  0.700  0.973  1.0
[/CIF]
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