The crystal structure described by KMg2(PO4)2 crystallizes in the monoclinic C2/c space group. K(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. Mg(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form MgO4 tetrahedra that share corners with four equivalent P(1)O4 tetrahedra. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with four equivalent Mg(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(4) is bonded in a linear geometry to one Mg(1) and one P(1) atom. In the second O site, O(1) is bonded in a 2-coordinate geometry to two equivalent K(1), one Mg(1), and one P(1) atom. In the third O site, O(2) is bonded in a 3-coordinate geometry to one K(1), one Mg(1), and one P(1) atom. In the fourth O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one Mg(1), and one P(1) atom. is represented by the CIF card [CIF]
data_KMg2(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.904
_cell_length_b   9.904
_cell_length_c   9.629
_cell_angle_alpha   60.942
_cell_angle_beta   60.942
_cell_angle_gamma   32.652
_symmetry_Int_Tables_number   1
_cell_volume   439.534
_cell_formula_units_Z   2
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
  K  K0  1  0.754  0.246  0.750  1.0
  K  K1  1  0.246  0.754  0.250  1.0
  Mg  Mg2  1  0.555  0.143  0.566  1.0
  Mg  Mg3  1  0.445  0.857  0.434  1.0
  Mg  Mg4  1  0.857  0.445  0.934  1.0
  Mg  Mg5  1  0.143  0.555  0.066  1.0
  P  P6  1  0.344  0.933  0.779  1.0
  P  P7  1  0.656  0.067  0.221  1.0
  P  P8  1  0.067  0.656  0.721  1.0
  P  P9  1  0.933  0.344  0.279  1.0
  O  O10  1  0.361  0.847  0.666  1.0
  O  O11  1  0.639  0.153  0.334  1.0
  O  O12  1  0.153  0.639  0.834  1.0
  O  O13  1  0.847  0.361  0.166  1.0
  O  O14  1  0.850  0.935  0.641  1.0
  O  O15  1  0.150  0.065  0.359  1.0
  O  O16  1  0.065  0.150  0.859  1.0
  O  O17  1  0.935  0.850  0.141  1.0
  O  O18  1  0.507  0.706  0.912  1.0
  O  O19  1  0.493  0.294  0.088  1.0
  O  O20  1  0.294  0.493  0.588  1.0
  O  O21  1  0.706  0.507  0.412  1.0
  O  O22  1  0.444  0.020  0.682  1.0
  O  O23  1  0.556  0.980  0.318  1.0
  O  O24  1  0.980  0.556  0.818  1.0
  O  O25  1  0.020  0.444  0.182  1.0
[/CIF]
.
The crystal structure described by KMg2(PO4)2 crystallizes in the monoclinic C2/c space group. K(1) is bonded in a 8-coordinate geometry to two equivalent O(2), two equivalent O(3), and four equivalent O(1) atoms. Mg(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form MgO4 tetrahedra that share corners with four equivalent P(1)O4 tetrahedra. P(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form PO4 tetrahedra that share corners with four equivalent Mg(1)O4 tetrahedra. There are four inequivalent O sites. In the first O site, O(4) is bonded in a linear geometry to one Mg(1) and one P(1) atom. In the second O site, O(1) is bonded in a 2-coordinate geometry to two equivalent K(1), one Mg(1), and one P(1) atom. In the third O site, O(2) is bonded in a 3-coordinate geometry to one K(1), one Mg(1), and one P(1) atom. In the fourth O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one Mg(1), and one P(1) atom. is represented by the CIF card [CIF]
data_KMg2(PO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.904
_cell_length_b   9.904
_cell_length_c   9.629
_cell_angle_alpha   60.942
_cell_angle_beta   60.942
_cell_angle_gamma   32.652
_symmetry_Int_Tables_number   1
_cell_volume   439.534
_cell_formula_units_Z   2
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
  K  K0  1  0.754  0.246  0.750  1.0
  K  K1  1  0.246  0.754  0.250  1.0
  Mg  Mg2  1  0.555  0.143  0.566  1.0
  Mg  Mg3  1  0.445  0.857  0.434  1.0
  Mg  Mg4  1  0.857  0.445  0.934  1.0
  Mg  Mg5  1  0.143  0.555  0.066  1.0
  P  P6  1  0.344  0.933  0.779  1.0
  P  P7  1  0.656  0.067  0.221  1.0
  P  P8  1  0.067  0.656  0.721  1.0
  P  P9  1  0.933  0.344  0.279  1.0
  O  O10  1  0.361  0.847  0.666  1.0
  O  O11  1  0.639  0.153  0.334  1.0
  O  O12  1  0.153  0.639  0.834  1.0
  O  O13  1  0.847  0.361  0.166  1.0
  O  O14  1  0.850  0.935  0.641  1.0
  O  O15  1  0.150  0.065  0.359  1.0
  O  O16  1  0.065  0.150  0.859  1.0
  O  O17  1  0.935  0.850  0.141  1.0
  O  O18  1  0.507  0.706  0.912  1.0
  O  O19  1  0.493  0.294  0.088  1.0
  O  O20  1  0.294  0.493  0.588  1.0
  O  O21  1  0.706  0.507  0.412  1.0
  O  O22  1  0.444  0.020  0.682  1.0
  O  O23  1  0.556  0.980  0.318  1.0
  O  O24  1  0.980  0.556  0.818  1.0
  O  O25  1  0.020  0.444  0.182  1.0
[/CIF]
.