The compound described by K4SnO4 crystallizes in the triclinic P-1 space group. There are four inequivalent K sites. In the first K site, K(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second K site, K(2) is bonded to one O(3), two equivalent O(1), and two equivalent O(2) atoms to form distorted KO5 trigonal bipyramids that share corners with three equivalent K(4)O5 square pyramids, corners with three equivalent Sn(1)O4 tetrahedra, corners with two equivalent K(3)O4 trigonal pyramids, edges with three equivalent K(4)O5 square pyramids,  an edgeedge with one Sn(1)O4 tetrahedra, and edges with two equivalent K(2)O5 trigonal bipyramids. In the third K site, K(3) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form distorted KO4 trigonal pyramids that share corners with two equivalent K(4)O5 square pyramids, corners with four equivalent Sn(1)O4 tetrahedra, corners with two equivalent K(2)O5 trigonal bipyramids, and edges with two equivalent K(3)O4 trigonal pyramids. In the fourth K site, K(4) is bonded to one O(3), two equivalent O(1), and two equivalent O(2) atoms to form distorted KO5 square pyramids that share  a cornercorner with one Sn(1)O4 tetrahedra, corners with three equivalent K(2)O5 trigonal bipyramids, corners with two equivalent K(3)O4 trigonal pyramids, edges with two equivalent K(4)O5 square pyramids, edges with two equivalent Sn(1)O4 tetrahedra, and edges with three equivalent K(2)O5 trigonal bipyramids. Sn(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SnO4 tetrahedra that share  a cornercorner with one K(4)O5 square pyramid, corners with three equivalent K(2)O5 trigonal bipyramids, corners with four equivalent K(3)O4 trigonal pyramids, edges with two equivalent K(4)O5 square pyramids, and  an edgeedge with one K(2)O5 trigonal bipyramid. There are four inequivalent O sites. In the first O site, O(1) is bonded to one K(1), two equivalent K(2), two equivalent K(4), and one Sn(1) atom to form a mixture of corner and edge-sharing OK5Sn octahedra. The corner-sharing octahedral tilt angles range from 10-30°. In the second O site, O(2) is bonded to one K(1), two equivalent K(2), two equivalent K(4), and one Sn(1) atom to form a mixture of distorted corner and edge-sharing OK5Sn octahedra. The corner-sharing octahedral tilt angles range from 10-30°. In the third O site, O(3) is bonded to one K(1), one K(2), one K(4), two equivalent K(3), and one Sn(1) atom to form a mixture of distorted corner and edge-sharing OK5Sn octahedra. The corner-sharing octahedral tilt angles range from 18-19°. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one K(1), two equivalent K(3), and one Sn(1) atom. is represented by the CIF card [CIF]
data_K4SnO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.509
_cell_length_b   6.510
_cell_length_c   9.782
_cell_angle_alpha   71.646
_cell_angle_beta   79.985
_cell_angle_gamma   67.242
_symmetry_Int_Tables_number   1
_cell_volume   362.163
_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  0.763  0.407  0.829  1.0
  K  K1  1  0.237  0.593  0.171  1.0
  K  K2  1  0.228  0.486  0.561  1.0
  K  K3  1  0.772  0.514  0.439  1.0
  K  K4  1  0.742  0.761  0.022  1.0
  K  K5  1  0.258  0.239  0.978  1.0
  K  K6  1  0.274  0.041  0.387  1.0
  K  K7  1  0.726  0.959  0.613  1.0
  Sn  Sn8  1  0.778  0.156  0.246  1.0
  Sn  Sn9  1  0.222  0.844  0.754  1.0
  O  O10  1  0.530  0.297  0.377  1.0
  O  O11  1  0.470  0.703  0.623  1.0
  O  O12  1  0.964  0.843  0.356  1.0
  O  O13  1  0.036  0.157  0.644  1.0
  O  O14  1  0.966  0.350  0.193  1.0
  O  O15  1  0.034  0.650  0.807  1.0
  O  O16  1  0.638  0.157  0.083  1.0
  O  O17  1  0.362  0.843  0.917  1.0
[/CIF]
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The compound described by K4SnO4 crystallizes in the triclinic P-1 space group. There are four inequivalent K sites. In the first K site, K(1) is bonded in a 4-coordinate geometry to one O(1), one O(2), one O(3), and one O(4) atom. In the second K site, K(2) is bonded to one O(3), two equivalent O(1), and two equivalent O(2) atoms to form distorted KO5 trigonal bipyramids that share corners with three equivalent K(4)O5 square pyramids, corners with three equivalent Sn(1)O4 tetrahedra, corners with two equivalent K(3)O4 trigonal pyramids, edges with three equivalent K(4)O5 square pyramids,  an edgeedge with one Sn(1)O4 tetrahedra, and edges with two equivalent K(2)O5 trigonal bipyramids. In the third K site, K(3) is bonded to two equivalent O(3) and two equivalent O(4) atoms to form distorted KO4 trigonal pyramids that share corners with two equivalent K(4)O5 square pyramids, corners with four equivalent Sn(1)O4 tetrahedra, corners with two equivalent K(2)O5 trigonal bipyramids, and edges with two equivalent K(3)O4 trigonal pyramids. In the fourth K site, K(4) is bonded to one O(3), two equivalent O(1), and two equivalent O(2) atoms to form distorted KO5 square pyramids that share  a cornercorner with one Sn(1)O4 tetrahedra, corners with three equivalent K(2)O5 trigonal bipyramids, corners with two equivalent K(3)O4 trigonal pyramids, edges with two equivalent K(4)O5 square pyramids, edges with two equivalent Sn(1)O4 tetrahedra, and edges with three equivalent K(2)O5 trigonal bipyramids. Sn(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form SnO4 tetrahedra that share  a cornercorner with one K(4)O5 square pyramid, corners with three equivalent K(2)O5 trigonal bipyramids, corners with four equivalent K(3)O4 trigonal pyramids, edges with two equivalent K(4)O5 square pyramids, and  an edgeedge with one K(2)O5 trigonal bipyramid. There are four inequivalent O sites. In the first O site, O(1) is bonded to one K(1), two equivalent K(2), two equivalent K(4), and one Sn(1) atom to form a mixture of corner and edge-sharing OK5Sn octahedra. The corner-sharing octahedral tilt angles range from 10-30°. In the second O site, O(2) is bonded to one K(1), two equivalent K(2), two equivalent K(4), and one Sn(1) atom to form a mixture of distorted corner and edge-sharing OK5Sn octahedra. The corner-sharing octahedral tilt angles range from 10-30°. In the third O site, O(3) is bonded to one K(1), one K(2), one K(4), two equivalent K(3), and one Sn(1) atom to form a mixture of distorted corner and edge-sharing OK5Sn octahedra. The corner-sharing octahedral tilt angles range from 18-19°. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one K(1), two equivalent K(3), and one Sn(1) atom. is represented by the CIF card [CIF]
data_K4SnO4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.509
_cell_length_b   6.510
_cell_length_c   9.782
_cell_angle_alpha   71.646
_cell_angle_beta   79.985
_cell_angle_gamma   67.242
_symmetry_Int_Tables_number   1
_cell_volume   362.163
_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  0.763  0.407  0.829  1.0
  K  K1  1  0.237  0.593  0.171  1.0
  K  K2  1  0.228  0.486  0.561  1.0
  K  K3  1  0.772  0.514  0.439  1.0
  K  K4  1  0.742  0.761  0.022  1.0
  K  K5  1  0.258  0.239  0.978  1.0
  K  K6  1  0.274  0.041  0.387  1.0
  K  K7  1  0.726  0.959  0.613  1.0
  Sn  Sn8  1  0.778  0.156  0.246  1.0
  Sn  Sn9  1  0.222  0.844  0.754  1.0
  O  O10  1  0.530  0.297  0.377  1.0
  O  O11  1  0.470  0.703  0.623  1.0
  O  O12  1  0.964  0.843  0.356  1.0
  O  O13  1  0.036  0.157  0.644  1.0
  O  O14  1  0.966  0.350  0.193  1.0
  O  O15  1  0.034  0.650  0.807  1.0
  O  O16  1  0.638  0.157  0.083  1.0
  O  O17  1  0.362  0.843  0.917  1.0
[/CIF]
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