The compound described by MgCoP2O7 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a distorted pentagonal planar geometry to one O(3), one O(4), one O(5), one O(6), and one O(7) atom. Co(1) is bonded to one O(2), one O(3), one O(5), one O(6), and one O(7) atom to form distorted CoO5 trigonal bipyramids that share corners with two equivalent 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(2), one O(4), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one P(2)O4 tetrahedra and corners with two equivalent Co(1)O5 trigonal bipyramids. In the second P site, P(2) is bonded to one O(1), one O(3), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra and corners with three equivalent Co(1)O5 trigonal bipyramids. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Co(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Co(1), and one P(2) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Mg(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Mg(1), one Co(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a T-shaped geometry to one Mg(1), one Co(1), and one P(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Mg(1), one Co(1), and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgCoP2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.110
_cell_length_b   5.680
_cell_length_c   5.657
_cell_angle_alpha   74.096
_cell_angle_beta   96.599
_cell_angle_gamma   111.999
_symmetry_Int_Tables_number   1
_cell_volume   146.412
_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  0.845  0.562  0.477  1.0
  Co  Co1  1  0.671  0.949  0.633  1.0
  P  P2  1  0.154  0.764  0.977  1.0
  P  P3  1  0.297  0.407  0.378  1.0
  O  O4  1  0.199  0.480  0.094  1.0
  O  O5  1  0.444  0.957  0.886  1.0
  O  O6  1  0.023  0.285  0.529  1.0
  O  O7  1  0.029  0.816  0.178  1.0
  O  O8  1  0.484  0.248  0.400  1.0
  O  O9  1  0.487  0.664  0.451  1.0
  O  O10  1  0.936  0.718  0.763  1.0
[/CIF]
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The compound described by MgCoP2O7 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a distorted pentagonal planar geometry to one O(3), one O(4), one O(5), one O(6), and one O(7) atom. Co(1) is bonded to one O(2), one O(3), one O(5), one O(6), and one O(7) atom to form distorted CoO5 trigonal bipyramids that share corners with two equivalent 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(2), one O(4), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one P(2)O4 tetrahedra and corners with two equivalent Co(1)O5 trigonal bipyramids. In the second P site, P(2) is bonded to one O(1), one O(3), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra and corners with three equivalent Co(1)O5 trigonal bipyramids. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one P(1) and one P(2) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Co(1) and one P(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Co(1), and one P(2) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Mg(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted T-shaped geometry to one Mg(1), one Co(1), and one P(2) atom. In the sixth O site, O(6) is bonded in a T-shaped geometry to one Mg(1), one Co(1), and one P(2) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one Mg(1), one Co(1), and one P(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgCoP2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.110
_cell_length_b   5.680
_cell_length_c   5.657
_cell_angle_alpha   74.096
_cell_angle_beta   96.599
_cell_angle_gamma   111.999
_symmetry_Int_Tables_number   1
_cell_volume   146.412
_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  0.845  0.562  0.477  1.0
  Co  Co1  1  0.671  0.949  0.633  1.0
  P  P2  1  0.154  0.764  0.977  1.0
  P  P3  1  0.297  0.407  0.378  1.0
  O  O4  1  0.199  0.480  0.094  1.0
  O  O5  1  0.444  0.957  0.886  1.0
  O  O6  1  0.023  0.285  0.529  1.0
  O  O7  1  0.029  0.816  0.178  1.0
  O  O8  1  0.484  0.248  0.400  1.0
  O  O9  1  0.487  0.664  0.451  1.0
  O  O10  1  0.936  0.718  0.763  1.0
[/CIF]
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