The material structure described by MgCuCd2(PO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(3), one O(4), one O(5), and one O(6) atom. Cu(1) is bonded in a 3-coordinate geometry to one O(3), one O(4), and one O(8) atom. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(6), and one O(8) atom. In the second Cd site, Cd(2) is bonded to one O(1), one O(2), one O(5), and one O(7) atom to form distorted CdO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(6), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Cd(2)O4 tetrahedra. In the second P site, P(2) is bonded to one O(2), one O(4), one O(5), and one O(7) atom to form PO4 tetrahedra that share corners with three equivalent Cd(2)O4 tetrahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(2), and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(2), and one P(2) atom. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one Mg(1), one Cu(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Mg(1), one Cu(1), and one P(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mg(1), one Cd(2), and one P(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mg(1), one Cd(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Cd(2) and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cd(1), and one P(1) atom. is represented by the CIF card [CIF]
data_MgCd2Cu(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.077
_cell_length_b   5.517
_cell_length_c   7.840
_cell_angle_alpha   78.883
_cell_angle_beta   84.471
_cell_angle_gamma   77.380
_symmetry_Int_Tables_number   1
_cell_volume   209.924
_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  0.847  0.393  0.006  1.0
  Cd  Cd1  1  0.268  0.251  0.360  1.0
  Cd  Cd2  1  0.721  0.784  0.640  1.0
  Cu  Cu3  1  0.086  0.901  0.031  1.0
  P  P4  1  0.629  0.677  0.230  1.0
  P  P5  1  0.348  0.345  0.774  1.0
  O  O6  1  0.655  0.849  0.358  1.0
  O  O7  1  0.429  0.154  0.647  1.0
  O  O8  1  0.756  0.769  0.040  1.0
  O  O9  1  0.219  0.217  0.951  1.0
  O  O10  1  0.606  0.427  0.818  1.0
  O  O11  1  0.791  0.394  0.273  1.0
  O  O12  1  0.147  0.583  0.696  1.0
  O  O13  1  0.331  0.661  0.213  1.0
[/CIF]
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The material structure described by MgCuCd2(PO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one O(3), one O(4), one O(5), and one O(6) atom. Cu(1) is bonded in a 3-coordinate geometry to one O(3), one O(4), and one O(8) atom. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(6), and one O(8) atom. In the second Cd site, Cd(2) is bonded to one O(1), one O(2), one O(5), and one O(7) atom to form distorted CdO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra and corners with three equivalent P(2)O4 tetrahedra. There are two inequivalent P sites. In the first P site, P(1) is bonded to one O(1), one O(3), one O(6), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Cd(2)O4 tetrahedra. In the second P site, P(2) is bonded to one O(2), one O(4), one O(5), and one O(7) atom to form PO4 tetrahedra that share corners with three equivalent Cd(2)O4 tetrahedra. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(2), and one P(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Cd(1), one Cd(2), and one P(2) atom. In the third O site, O(3) is bonded in a trigonal non-coplanar geometry to one Mg(1), one Cu(1), and one P(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Mg(1), one Cu(1), and one P(2) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Mg(1), one Cd(2), and one P(2) atom. In the sixth O site, O(6) is bonded in a 3-coordinate geometry to one Mg(1), one Cd(1), and one P(1) atom. In the seventh O site, O(7) is bonded in a bent 150 degrees geometry to one Cd(2) and one P(2) atom. In the eighth O site, O(8) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cd(1), and one P(1) atom. is represented by the CIF card [CIF]
data_MgCd2Cu(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.077
_cell_length_b   5.517
_cell_length_c   7.840
_cell_angle_alpha   78.883
_cell_angle_beta   84.471
_cell_angle_gamma   77.380
_symmetry_Int_Tables_number   1
_cell_volume   209.924
_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  0.847  0.393  0.006  1.0
  Cd  Cd1  1  0.268  0.251  0.360  1.0
  Cd  Cd2  1  0.721  0.784  0.640  1.0
  Cu  Cu3  1  0.086  0.901  0.031  1.0
  P  P4  1  0.629  0.677  0.230  1.0
  P  P5  1  0.348  0.345  0.774  1.0
  O  O6  1  0.655  0.849  0.358  1.0
  O  O7  1  0.429  0.154  0.647  1.0
  O  O8  1  0.756  0.769  0.040  1.0
  O  O9  1  0.219  0.217  0.951  1.0
  O  O10  1  0.606  0.427  0.818  1.0
  O  O11  1  0.791  0.394  0.273  1.0
  O  O12  1  0.147  0.583  0.696  1.0
  O  O13  1  0.331  0.661  0.213  1.0
[/CIF]
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