The material described by KMg2(AsO5)2O2 crystallizes in the monoclinic C2/c space group. The structure consists of four 7782-44-7 molecules inside a KMg2(AsO5)2 framework. In the KMg2(AsO5)2 framework, K(1) is bonded in a 10-coordinate geometry to two equivalent O(3), four equivalent O(1), and four equivalent O(5) atoms. Mg(1) is bonded to one O(1), one O(3), one O(5), and two equivalent O(4) atoms to form distorted MgO5 square pyramids that share corners with four equivalent As(1)O4 tetrahedra and  an edgeedge with one Mg(1)O5 square pyramid. As(1) is bonded to one O(1), one O(3), one O(4), and one O(6) atom to form AsO4 tetrahedra that share corners with four equivalent Mg(1)O5 square pyramids. There are five inequivalent O sites. In the first O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Mg(1) and one As(1) atom. In the second O site, O(5) is bonded in a 4-coordinate geometry to two equivalent K(1), one Mg(1), and one O(5) atom. In the third O site, O(6) is bonded in a single-bond geometry to one As(1) atom. In the fourth O site, O(1) is bonded in a 2-coordinate geometry to two equivalent K(1), one Mg(1), and one As(1) atom. In the fifth O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one Mg(1), and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_KMg2(AsO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.505
_cell_length_b   9.577
_cell_length_c   9.577
_cell_angle_alpha   81.952
_cell_angle_beta   107.912
_cell_angle_gamma   107.912
_symmetry_Int_Tables_number   1
_cell_volume   539.536
_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  0.250  0.064  0.936  1.0
  K  K1  1  0.750  0.936  0.064  1.0
  Mg  Mg2  1  0.121  0.374  0.055  1.0
  Mg  Mg3  1  0.379  0.945  0.626  1.0
  Mg  Mg4  1  0.879  0.626  0.945  1.0
  Mg  Mg5  1  0.621  0.055  0.374  1.0
  As  As6  1  0.387  0.650  0.872  1.0
  As  As7  1  0.113  0.128  0.350  1.0
  As  As8  1  0.613  0.350  0.128  1.0
  As  As9  1  0.887  0.872  0.650  1.0
  O  O10  1  0.606  0.169  0.183  1.0
  O  O11  1  0.894  0.817  0.831  1.0
  O  O12  1  0.394  0.831  0.817  1.0
  O  O13  1  0.106  0.183  0.169  1.0
  O  O14  1  0.254  0.527  0.390  1.0
  O  O15  1  0.246  0.610  0.473  1.0
  O  O16  1  0.746  0.473  0.610  1.0
  O  O17  1  0.754  0.390  0.527  1.0
  O  O18  1  0.368  0.344  0.988  1.0
  O  O19  1  0.132  0.012  0.656  1.0
  O  O20  1  0.632  0.656  0.012  1.0
  O  O21  1  0.868  0.988  0.344  1.0
  O  O22  1  0.837  0.421  0.050  1.0
  O  O23  1  0.663  0.950  0.579  1.0
  O  O24  1  0.163  0.579  0.950  1.0
  O  O25  1  0.337  0.050  0.421  1.0
  O  O26  1  0.855  0.203  0.839  1.0
  O  O27  1  0.645  0.161  0.797  1.0
  O  O28  1  0.145  0.797  0.161  1.0
  O  O29  1  0.355  0.839  0.203  1.0
  O  O30  1  0.129  0.266  0.452  1.0
  O  O31  1  0.371  0.548  0.734  1.0
  O  O32  1  0.871  0.734  0.548  1.0
  O  O33  1  0.629  0.452  0.266  1.0
[/CIF]
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The material described by KMg2(AsO5)2O2 crystallizes in the monoclinic C2/c space group. The structure consists of four 7782-44-7 molecules inside a KMg2(AsO5)2 framework. In the KMg2(AsO5)2 framework, K(1) is bonded in a 10-coordinate geometry to two equivalent O(3), four equivalent O(1), and four equivalent O(5) atoms. Mg(1) is bonded to one O(1), one O(3), one O(5), and two equivalent O(4) atoms to form distorted MgO5 square pyramids that share corners with four equivalent As(1)O4 tetrahedra and  an edgeedge with one Mg(1)O5 square pyramid. As(1) is bonded to one O(1), one O(3), one O(4), and one O(6) atom to form AsO4 tetrahedra that share corners with four equivalent Mg(1)O5 square pyramids. There are five inequivalent O sites. In the first O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Mg(1) and one As(1) atom. In the second O site, O(5) is bonded in a 4-coordinate geometry to two equivalent K(1), one Mg(1), and one O(5) atom. In the third O site, O(6) is bonded in a single-bond geometry to one As(1) atom. In the fourth O site, O(1) is bonded in a 2-coordinate geometry to two equivalent K(1), one Mg(1), and one As(1) atom. In the fifth O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one Mg(1), and one As(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_KMg2(AsO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.505
_cell_length_b   9.577
_cell_length_c   9.577
_cell_angle_alpha   81.952
_cell_angle_beta   107.912
_cell_angle_gamma   107.912
_symmetry_Int_Tables_number   1
_cell_volume   539.536
_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  0.250  0.064  0.936  1.0
  K  K1  1  0.750  0.936  0.064  1.0
  Mg  Mg2  1  0.121  0.374  0.055  1.0
  Mg  Mg3  1  0.379  0.945  0.626  1.0
  Mg  Mg4  1  0.879  0.626  0.945  1.0
  Mg  Mg5  1  0.621  0.055  0.374  1.0
  As  As6  1  0.387  0.650  0.872  1.0
  As  As7  1  0.113  0.128  0.350  1.0
  As  As8  1  0.613  0.350  0.128  1.0
  As  As9  1  0.887  0.872  0.650  1.0
  O  O10  1  0.606  0.169  0.183  1.0
  O  O11  1  0.894  0.817  0.831  1.0
  O  O12  1  0.394  0.831  0.817  1.0
  O  O13  1  0.106  0.183  0.169  1.0
  O  O14  1  0.254  0.527  0.390  1.0
  O  O15  1  0.246  0.610  0.473  1.0
  O  O16  1  0.746  0.473  0.610  1.0
  O  O17  1  0.754  0.390  0.527  1.0
  O  O18  1  0.368  0.344  0.988  1.0
  O  O19  1  0.132  0.012  0.656  1.0
  O  O20  1  0.632  0.656  0.012  1.0
  O  O21  1  0.868  0.988  0.344  1.0
  O  O22  1  0.837  0.421  0.050  1.0
  O  O23  1  0.663  0.950  0.579  1.0
  O  O24  1  0.163  0.579  0.950  1.0
  O  O25  1  0.337  0.050  0.421  1.0
  O  O26  1  0.855  0.203  0.839  1.0
  O  O27  1  0.645  0.161  0.797  1.0
  O  O28  1  0.145  0.797  0.161  1.0
  O  O29  1  0.355  0.839  0.203  1.0
  O  O30  1  0.129  0.266  0.452  1.0
  O  O31  1  0.371  0.548  0.734  1.0
  O  O32  1  0.871  0.734  0.548  1.0
  O  O33  1  0.629  0.452  0.266  1.0
[/CIF]
.