The material described by KSi crystallizes in the tetragonal I4_1/acd space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to eight equivalent Si(1) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. Si(1) is bonded in a 10-coordinate geometry to three equivalent K(2), four equivalent K(1), and three equivalent Si(1) atoms. is represented by the CIF card [CIF]
data_KSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.587
_cell_length_b   10.587
_cell_length_c   11.408
_cell_angle_alpha   117.645
_cell_angle_beta   117.645
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   964.887
_cell_formula_units_Z   16
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  0.393  0.000  1.0
  K  K1  1  0.250  0.893  0.000  1.0
  K  K2  1  0.107  0.750  0.500  1.0
  K  K3  1  0.893  0.250  0.500  1.0
  K  K4  1  0.750  0.607  0.000  1.0
  K  K5  1  0.750  0.107  0.000  1.0
  K  K6  1  0.607  0.750  0.500  1.0
  K  K7  1  0.393  0.250  0.500  1.0
  K  K8  1  0.753  0.247  0.750  1.0
  K  K9  1  0.497  0.747  0.750  1.0
  K  K10  1  0.003  0.997  0.250  1.0
  K  K11  1  0.747  0.497  0.250  1.0
  K  K12  1  0.247  0.753  0.250  1.0
  K  K13  1  0.503  0.253  0.250  1.0
  K  K14  1  0.997  0.003  0.750  1.0
  K  K15  1  0.253  0.503  0.750  1.0
  Si  Si16  1  0.271  0.485  0.348  1.0
  Si  Si17  1  0.577  0.985  0.348  1.0
  Si  Si18  1  0.363  0.077  0.848  1.0
  Si  Si19  1  0.985  0.577  0.848  1.0
  Si  Si20  1  0.729  0.515  0.652  1.0
  Si  Si21  1  0.423  0.015  0.652  1.0
  Si  Si22  1  0.637  0.923  0.152  1.0
  Si  Si23  1  0.015  0.423  0.152  1.0
  Si  Si24  1  0.771  0.863  0.348  1.0
  Si  Si25  1  0.077  0.363  0.348  1.0
  Si  Si26  1  0.863  0.771  0.848  1.0
  Si  Si27  1  0.485  0.271  0.848  1.0
  Si  Si28  1  0.229  0.137  0.652  1.0
  Si  Si29  1  0.923  0.637  0.652  1.0
  Si  Si30  1  0.137  0.229  0.152  1.0
  Si  Si31  1  0.515  0.729  0.152  1.0
[/CIF]
.
The material described by KSi crystallizes in the tetragonal I4_1/acd space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to eight equivalent Si(1) atoms. In the second K site, K(2) is bonded in a 6-coordinate geometry to six equivalent Si(1) atoms. Si(1) is bonded in a 10-coordinate geometry to three equivalent K(2), four equivalent K(1), and three equivalent Si(1) atoms. is represented by the CIF card [CIF]
data_KSi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.587
_cell_length_b   10.587
_cell_length_c   11.408
_cell_angle_alpha   117.645
_cell_angle_beta   117.645
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   964.887
_cell_formula_units_Z   16
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  0.393  0.000  1.0
  K  K1  1  0.250  0.893  0.000  1.0
  K  K2  1  0.107  0.750  0.500  1.0
  K  K3  1  0.893  0.250  0.500  1.0
  K  K4  1  0.750  0.607  0.000  1.0
  K  K5  1  0.750  0.107  0.000  1.0
  K  K6  1  0.607  0.750  0.500  1.0
  K  K7  1  0.393  0.250  0.500  1.0
  K  K8  1  0.753  0.247  0.750  1.0
  K  K9  1  0.497  0.747  0.750  1.0
  K  K10  1  0.003  0.997  0.250  1.0
  K  K11  1  0.747  0.497  0.250  1.0
  K  K12  1  0.247  0.753  0.250  1.0
  K  K13  1  0.503  0.253  0.250  1.0
  K  K14  1  0.997  0.003  0.750  1.0
  K  K15  1  0.253  0.503  0.750  1.0
  Si  Si16  1  0.271  0.485  0.348  1.0
  Si  Si17  1  0.577  0.985  0.348  1.0
  Si  Si18  1  0.363  0.077  0.848  1.0
  Si  Si19  1  0.985  0.577  0.848  1.0
  Si  Si20  1  0.729  0.515  0.652  1.0
  Si  Si21  1  0.423  0.015  0.652  1.0
  Si  Si22  1  0.637  0.923  0.152  1.0
  Si  Si23  1  0.015  0.423  0.152  1.0
  Si  Si24  1  0.771  0.863  0.348  1.0
  Si  Si25  1  0.077  0.363  0.348  1.0
  Si  Si26  1  0.863  0.771  0.848  1.0
  Si  Si27  1  0.485  0.271  0.848  1.0
  Si  Si28  1  0.229  0.137  0.652  1.0
  Si  Si29  1  0.923  0.637  0.652  1.0
  Si  Si30  1  0.137  0.229  0.152  1.0
  Si  Si31  1  0.515  0.729  0.152  1.0
[/CIF]
.