The crystal structure described by K2SrCl4 crystallizes in the monoclinic Pc space group. There are four inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(3), two equivalent Cl(5), two equivalent Cl(7), and two equivalent Cl(8) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(3), two equivalent Cl(2), two equivalent Cl(4), and two equivalent Cl(6) atoms. In the third K site, K(3) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(7), and two equivalent Cl(8) atoms. In the fourth K site, K(4) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(5), two equivalent Cl(4), and two equivalent Cl(6) atoms. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(6), and one Cl(7) atom. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(5), two equivalent Cl(7), and two equivalent Cl(8) atoms. There are eight inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 6-coordinate geometry to one K(1), one K(2), one K(3), one K(4), one Sr(1), and one Sr(2) atom. In the second Cl site, Cl(2) is bonded in a 6-coordinate geometry to one K(3), one K(4), two equivalent K(2), one Sr(1), and one Sr(2) atom. In the third Cl site, Cl(3) is bonded to one K(1), one K(2), one K(3), one K(4), one Sr(1), and one Sr(2) atom to form distorted ClK4Sr2 octahedra that share  a cornercorner with one Cl(4)K5Sr octahedra, corners with two equivalent Cl(5)K4Sr2 octahedra,  an edgeedge with one Cl(4)K5Sr octahedra, edges with two equivalent Cl(5)K4Sr2 octahedra, and  a faceface with one Cl(4)K5Sr octahedra. The corner-sharing octahedral tilt angles range from 42-48°. In the fourth Cl site, Cl(4) is bonded to one K(3), two equivalent K(2), two equivalent K(4), and one Sr(1) atom to form distorted ClK5Sr octahedra that share  a cornercorner with one Cl(3)K4Sr2 octahedra,  a cornercorner with one Cl(5)K4Sr2 octahedra,  an edgeedge with one Cl(3)K4Sr2 octahedra, edges with two equivalent Cl(4)K5Sr octahedra,  a faceface with one Cl(3)K4Sr2 octahedra, and  a faceface with one Cl(5)K4Sr2 octahedra. The corner-sharing octahedral tilt angles range from 17-48°. In the fifth Cl site, Cl(5) is bonded to one K(3), one K(4), two equivalent K(1), one Sr(1), and one Sr(2) atom to form distorted ClK4Sr2 octahedra that share  a cornercorner with one Cl(4)K5Sr octahedra, corners with two equivalent Cl(3)K4Sr2 octahedra, corners with two equivalent Cl(5)K4Sr2 octahedra, edges with two equivalent Cl(3)K4Sr2 octahedra, and  a faceface with one Cl(4)K5Sr octahedra. The corner-sharing octahedral tilt angles range from 17-47°. In the sixth Cl site, Cl(6) is bonded in a 5-coordinate geometry to two equivalent K(2), two equivalent K(4), and one Sr(1) atom. In the seventh Cl site, Cl(7) is bonded in a 6-coordinate geometry to one K(3), two equivalent K(1), one Sr(1), and two equivalent Sr(2) atoms. In the eighth Cl site, Cl(8) is bonded in a 6-coordinate geometry to two equivalent K(1), two equivalent K(3), and two equivalent Sr(2) atoms. is represented by the CIF card [CIF]
data_K2SrCl4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.155
_cell_length_b   8.076
_cell_length_c   8.175
_cell_angle_alpha   70.150
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   816.926
_cell_formula_units_Z   4
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  0.945  0.309  0.823  1.0
  K  K1  1  0.440  0.820  0.303  1.0
  K  K2  1  0.810  0.943  0.428  1.0
  K  K3  1  0.627  0.257  0.997  1.0
  K  K4  1  0.560  0.820  0.803  1.0
  K  K5  1  0.190  0.943  0.928  1.0
  K  K6  1  0.055  0.309  0.323  1.0
  K  K7  1  0.373  0.257  0.497  1.0
  Sr  Sr8  1  0.307  0.422  0.950  1.0
  Sr  Sr9  1  0.693  0.422  0.450  1.0
  Sr  Sr10  1  0.123  0.746  0.487  1.0
  Sr  Sr11  1  0.877  0.746  0.987  1.0
  Cl  Cl12  1  0.757  0.618  0.752  1.0
  Cl  Cl13  1  0.693  0.779  0.183  1.0
  Cl  Cl14  1  0.239  0.111  0.252  1.0
  Cl  Cl15  1  0.582  0.099  0.421  1.0
  Cl  Cl16  1  0.179  0.349  0.685  1.0
  Cl  Cl17  1  0.517  0.502  0.615  1.0
  Cl  Cl18  1  0.821  0.349  0.185  1.0
  Cl  Cl19  1  0.067  0.572  0.941  1.0
  Cl  Cl20  1  0.483  0.502  0.115  1.0
  Cl  Cl21  1  0.933  0.572  0.441  1.0
  Cl  Cl22  1  0.994  0.973  0.136  1.0
  Cl  Cl23  1  0.307  0.779  0.683  1.0
  Cl  Cl24  1  0.006  0.973  0.636  1.0
  Cl  Cl25  1  0.761  0.111  0.752  1.0
  Cl  Cl26  1  0.418  0.099  0.921  1.0
  Cl  Cl27  1  0.243  0.618  0.252  1.0
[/CIF]
.
The crystal structure described by K2SrCl4 crystallizes in the monoclinic Pc space group. There are four inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(3), two equivalent Cl(5), two equivalent Cl(7), and two equivalent Cl(8) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(3), two equivalent Cl(2), two equivalent Cl(4), and two equivalent Cl(6) atoms. In the third K site, K(3) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(7), and two equivalent Cl(8) atoms. In the fourth K site, K(4) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(5), two equivalent Cl(4), and two equivalent Cl(6) atoms. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(4), one Cl(5), one Cl(6), and one Cl(7) atom. In the second Sr site, Sr(2) is bonded in a 8-coordinate geometry to one Cl(1), one Cl(2), one Cl(3), one Cl(5), two equivalent Cl(7), and two equivalent Cl(8) atoms. There are eight inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a 6-coordinate geometry to one K(1), one K(2), one K(3), one K(4), one Sr(1), and one Sr(2) atom. In the second Cl site, Cl(2) is bonded in a 6-coordinate geometry to one K(3), one K(4), two equivalent K(2), one Sr(1), and one Sr(2) atom. In the third Cl site, Cl(3) is bonded to one K(1), one K(2), one K(3), one K(4), one Sr(1), and one Sr(2) atom to form distorted ClK4Sr2 octahedra that share  a cornercorner with one Cl(4)K5Sr octahedra, corners with two equivalent Cl(5)K4Sr2 octahedra,  an edgeedge with one Cl(4)K5Sr octahedra, edges with two equivalent Cl(5)K4Sr2 octahedra, and  a faceface with one Cl(4)K5Sr octahedra. The corner-sharing octahedral tilt angles range from 42-48°. In the fourth Cl site, Cl(4) is bonded to one K(3), two equivalent K(2), two equivalent K(4), and one Sr(1) atom to form distorted ClK5Sr octahedra that share  a cornercorner with one Cl(3)K4Sr2 octahedra,  a cornercorner with one Cl(5)K4Sr2 octahedra,  an edgeedge with one Cl(3)K4Sr2 octahedra, edges with two equivalent Cl(4)K5Sr octahedra,  a faceface with one Cl(3)K4Sr2 octahedra, and  a faceface with one Cl(5)K4Sr2 octahedra. The corner-sharing octahedral tilt angles range from 17-48°. In the fifth Cl site, Cl(5) is bonded to one K(3), one K(4), two equivalent K(1), one Sr(1), and one Sr(2) atom to form distorted ClK4Sr2 octahedra that share  a cornercorner with one Cl(4)K5Sr octahedra, corners with two equivalent Cl(3)K4Sr2 octahedra, corners with two equivalent Cl(5)K4Sr2 octahedra, edges with two equivalent Cl(3)K4Sr2 octahedra, and  a faceface with one Cl(4)K5Sr octahedra. The corner-sharing octahedral tilt angles range from 17-47°. In the sixth Cl site, Cl(6) is bonded in a 5-coordinate geometry to two equivalent K(2), two equivalent K(4), and one Sr(1) atom. In the seventh Cl site, Cl(7) is bonded in a 6-coordinate geometry to one K(3), two equivalent K(1), one Sr(1), and two equivalent Sr(2) atoms. In the eighth Cl site, Cl(8) is bonded in a 6-coordinate geometry to two equivalent K(1), two equivalent K(3), and two equivalent Sr(2) atoms. is represented by the CIF card [CIF]
data_K2SrCl4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   13.155
_cell_length_b   8.076
_cell_length_c   8.175
_cell_angle_alpha   70.150
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   816.926
_cell_formula_units_Z   4
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  0.945  0.309  0.823  1.0
  K  K1  1  0.440  0.820  0.303  1.0
  K  K2  1  0.810  0.943  0.428  1.0
  K  K3  1  0.627  0.257  0.997  1.0
  K  K4  1  0.560  0.820  0.803  1.0
  K  K5  1  0.190  0.943  0.928  1.0
  K  K6  1  0.055  0.309  0.323  1.0
  K  K7  1  0.373  0.257  0.497  1.0
  Sr  Sr8  1  0.307  0.422  0.950  1.0
  Sr  Sr9  1  0.693  0.422  0.450  1.0
  Sr  Sr10  1  0.123  0.746  0.487  1.0
  Sr  Sr11  1  0.877  0.746  0.987  1.0
  Cl  Cl12  1  0.757  0.618  0.752  1.0
  Cl  Cl13  1  0.693  0.779  0.183  1.0
  Cl  Cl14  1  0.239  0.111  0.252  1.0
  Cl  Cl15  1  0.582  0.099  0.421  1.0
  Cl  Cl16  1  0.179  0.349  0.685  1.0
  Cl  Cl17  1  0.517  0.502  0.615  1.0
  Cl  Cl18  1  0.821  0.349  0.185  1.0
  Cl  Cl19  1  0.067  0.572  0.941  1.0
  Cl  Cl20  1  0.483  0.502  0.115  1.0
  Cl  Cl21  1  0.933  0.572  0.441  1.0
  Cl  Cl22  1  0.994  0.973  0.136  1.0
  Cl  Cl23  1  0.307  0.779  0.683  1.0
  Cl  Cl24  1  0.006  0.973  0.636  1.0
  Cl  Cl25  1  0.761  0.111  0.752  1.0
  Cl  Cl26  1  0.418  0.099  0.921  1.0
  Cl  Cl27  1  0.243  0.618  0.252  1.0
[/CIF]
.