The compound described by KMgNi2H3(SeO5)2 crystallizes in the triclinic P1 space group. K(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(9) atom. Mg(1) is bonded in a 7-coordinate geometry to one H(1), one O(1), one O(10), one O(2), one O(5), one O(6), and one O(7) atom. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(10), one O(4), one O(7), one O(8), and one O(9) atom to form distorted NiO5 trigonal bipyramids that share corners with two equivalent Se(1)O4 tetrahedra. In the second Ni site, Ni(2) is bonded in a 6-coordinate geometry to one O(10), one O(3), one O(5), one O(7), one O(8), and one O(9) atom. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one Mg(1) and one O(7) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(8) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(8) atom. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded to one O(1), one O(3), one O(4), and one O(9) atom to form SeO4 tetrahedra that share corners with two equivalent Ni(1)O5 trigonal bipyramids. In the second Se site, Se(2) is bonded in a distorted trigonal non-coplanar geometry to one O(2), one O(5), and one O(6) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one Mg(1), and one Se(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one K(1), one Mg(1), and one Se(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one K(1), one Ni(2), and one Se(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one K(1), one Ni(1), and one Se(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal pyramidal geometry to one K(1), one Mg(1), one Ni(2), and one Se(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one K(1), one Mg(1), and one Se(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Mg(1), one Ni(1), one Ni(2), and one H(1) atom. In the eighth O site, O(8) is bonded in a distorted water-like geometry to one Ni(1), one Ni(2), one H(2), and one H(3) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one K(1), one Ni(1), one Ni(2), and one Se(1) atom. In the tenth O site, O(10) is bonded in a distorted T-shaped geometry to one K(1), one Mg(1), one Ni(1), and one Ni(2) atom. is represented by the CIF card [CIF]
data_KMgNi2H3(SeO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.820
_cell_length_b   5.930
_cell_length_c   8.431
_cell_angle_alpha   62.716
_cell_angle_beta   65.543
_cell_angle_gamma   64.131
_symmetry_Int_Tables_number   1
_cell_volume   224.215
_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
  K  K0  1  0.581  0.412  0.498  1.0
  Mg  Mg1  1  0.974  0.490  0.700  1.0
  Ni  Ni2  1  0.002  0.481  0.030  1.0
  Ni  Ni3  1  0.501  0.031  0.998  1.0
  H  H4  1  0.674  0.825  0.793  1.0
  H  H5  1  0.310  0.295  0.263  1.0
  H  H6  1  0.448  0.463  0.060  1.0
  Se  Se7  1  0.918  0.891  0.267  1.0
  Se  Se8  1  0.135  0.980  0.696  1.0
  O  O9  1  0.768  0.750  0.488  1.0
  O  O10  1  0.214  0.255  0.516  1.0
  O  O11  1  0.247  0.794  0.215  1.0
  O  O12  1  0.796  0.221  0.222  1.0
  O  O13  1  0.810  0.175  0.786  1.0
  O  O14  1  0.087  0.835  0.584  1.0
  O  O15  1  0.679  0.675  0.910  1.0
  O  O16  1  0.339  0.338  0.128  1.0
  O  O17  1  0.814  0.794  0.150  1.0
  O  O18  1  0.227  0.287  0.862  1.0
[/CIF]
.
The compound described by KMgNi2H3(SeO5)2 crystallizes in the triclinic P1 space group. K(1) is bonded in a 8-coordinate geometry to one O(1), one O(10), one O(2), one O(3), one O(4), one O(5), one O(6), and one O(9) atom. Mg(1) is bonded in a 7-coordinate geometry to one H(1), one O(1), one O(10), one O(2), one O(5), one O(6), and one O(7) atom. There are two inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to one O(10), one O(4), one O(7), one O(8), and one O(9) atom to form distorted NiO5 trigonal bipyramids that share corners with two equivalent Se(1)O4 tetrahedra. In the second Ni site, Ni(2) is bonded in a 6-coordinate geometry to one O(10), one O(3), one O(5), one O(7), one O(8), and one O(9) atom. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one Mg(1) and one O(7) atom. In the second H site, H(2) is bonded in a single-bond geometry to one O(8) atom. In the third H site, H(3) is bonded in a single-bond geometry to one O(8) atom. There are two inequivalent Se sites. In the first Se site, Se(1) is bonded to one O(1), one O(3), one O(4), and one O(9) atom to form SeO4 tetrahedra that share corners with two equivalent Ni(1)O5 trigonal bipyramids. In the second Se site, Se(2) is bonded in a distorted trigonal non-coplanar geometry to one O(2), one O(5), and one O(6) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to one K(1), one Mg(1), and one Se(1) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to one K(1), one Mg(1), and one Se(2) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one K(1), one Ni(2), and one Se(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to one K(1), one Ni(1), and one Se(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal pyramidal geometry to one K(1), one Mg(1), one Ni(2), and one Se(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one K(1), one Mg(1), and one Se(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to one Mg(1), one Ni(1), one Ni(2), and one H(1) atom. In the eighth O site, O(8) is bonded in a distorted water-like geometry to one Ni(1), one Ni(2), one H(2), and one H(3) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one K(1), one Ni(1), one Ni(2), and one Se(1) atom. In the tenth O site, O(10) is bonded in a distorted T-shaped geometry to one K(1), one Mg(1), one Ni(1), and one Ni(2) atom. is represented by the CIF card [CIF]
data_KMgNi2H3(SeO5)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.820
_cell_length_b   5.930
_cell_length_c   8.431
_cell_angle_alpha   62.716
_cell_angle_beta   65.543
_cell_angle_gamma   64.131
_symmetry_Int_Tables_number   1
_cell_volume   224.215
_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
  K  K0  1  0.581  0.412  0.498  1.0
  Mg  Mg1  1  0.974  0.490  0.700  1.0
  Ni  Ni2  1  0.002  0.481  0.030  1.0
  Ni  Ni3  1  0.501  0.031  0.998  1.0
  H  H4  1  0.674  0.825  0.793  1.0
  H  H5  1  0.310  0.295  0.263  1.0
  H  H6  1  0.448  0.463  0.060  1.0
  Se  Se7  1  0.918  0.891  0.267  1.0
  Se  Se8  1  0.135  0.980  0.696  1.0
  O  O9  1  0.768  0.750  0.488  1.0
  O  O10  1  0.214  0.255  0.516  1.0
  O  O11  1  0.247  0.794  0.215  1.0
  O  O12  1  0.796  0.221  0.222  1.0
  O  O13  1  0.810  0.175  0.786  1.0
  O  O14  1  0.087  0.835  0.584  1.0
  O  O15  1  0.679  0.675  0.910  1.0
  O  O16  1  0.339  0.338  0.128  1.0
  O  O17  1  0.814  0.794  0.150  1.0
  O  O18  1  0.227  0.287  0.862  1.0
[/CIF]
.