data_K3Cr(HO)6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.33
_cell_length_b   7.33
_cell_length_c   7.33
_cell_angle_alpha   95.98
_cell_angle_beta   95.98
_cell_angle_gamma   95.98
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K3Cr(HO)6
_chemical_formula_sum   'K6 Cr2 H12 O12'
_cell_volume   387.65
_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  0.08  0.3  0.59  1.0
  K  K1  1  0.63  0.55  0.59  1.0
  K  K2  1  0.3  0.15  0.59  1.0
  K  K3  1  0.92  0.7  0.71  1.0
  K  K4  1  0.37  0.45  0.71  1.0
  K  K5  1  0.7  0.85  0.71  1.0
  Cr  Cr6  1  0.0  0.0  0.0  1.0
  Cr  Cr7  1  0.0  0.0  0.65  1.0
  H  H8  1  0.86  0.9  0.65  1.0
  H  H9  1  0.35  0.54  0.65  1.0
  H  H10  1  0.79  0.56  0.65  1.0
  H  H11  1  0.35  0.46  0.3  1.0
  H  H12  1  0.86  0.1  0.3  1.0
  H  H13  1  0.79  0.44  0.3  1.0
  H  H14  1  0.14  0.1  0.65  1.0
  H  H15  1  0.65  0.46  0.65  1.0
  H  H16  1  0.21  0.44  0.65  1.0
  H  H17  1  0.65  0.54  0.0  1.0
  H  H18  1  0.14  0.9  0.0  1.0
  H  H19  1  0.21  0.56  0.0  1.0
  O  O20  1  0.91  0.6  0.45  1.0
  O  O21  1  0.34  0.91  0.45  1.0
  O  O22  1  0.76  0.48  0.45  1.0
  O  O23  1  0.79  0.23  0.97  1.0
  O  O24  1  0.91  0.1  0.97  1.0
  O  O25  1  0.31  0.66  0.97  1.0
  O  O26  1  0.09  0.4  0.85  1.0
  O  O27  1  0.66  0.09  0.85  1.0
  O  O28  1  0.24  0.52  0.85  1.0
  O  O29  1  0.21  0.77  0.33  1.0
  O  O30  1  0.09  0.9  0.33  1.0
  O  O31  1  0.69  0.34  0.33  1.0

data_K3Cr(HO)6
_symmetry_space_group_name_H-M   P1
_cell_length_a   7.33
_cell_length_b   7.33
_cell_length_c   7.33
_cell_angle_alpha   95.98
_cell_angle_beta   95.98
_cell_angle_gamma   95.98
_symmetry_Int_Tables_number   1
_chemical_formula_structural   K3Cr(HO)6
_chemical_formula_sum   'K6 Cr2 H12 O12'
_cell_volume   387.65
_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  0.08  0.3  0.59  1.0
  K  K1  1  0.3  0.15  0.59  1.0
  K  K2  1  0.37  0.45  0.71  1.0
  K  K3  1  0.63  0.55  0.59  1.0
  K  K4  1  0.7  0.85  0.71  1.0
  K  K5  1  0.92  0.7  0.71  1.0
  Cr  Cr6  1  0.0  0.0  0.0  1.0
  Cr  Cr7  1  0.0  0.0  0.65  1.0
  H  H8  1  0.14  0.1  0.65  1.0
  H  H9  1  0.14  0.9  0.0  1.0
  H  H10  1  0.21  0.44  0.65  1.0
  H  H11  1  0.21  0.56  0.0  1.0
  H  H12  1  0.35  0.46  0.3  1.0
  H  H13  1  0.35  0.54  0.65  1.0
  H  H14  1  0.65  0.46  0.65  1.0
  H  H15  1  0.65  0.54  0.0  1.0
  H  H16  1  0.79  0.44  0.3  1.0
  H  H17  1  0.79  0.56  0.65  1.0
  H  H18  1  0.86  0.1  0.3  1.0
  H  H19  1  0.86  0.9  0.65  1.0
  O  O20  1  0.09  0.4  0.85  1.0
  O  O21  1  0.09  0.9  0.33  1.0
  O  O22  1  0.21  0.77  0.33  1.0
  O  O23  1  0.24  0.52  0.85  1.0
  O  O24  1  0.31  0.66  0.97  1.0
  O  O25  1  0.34  0.91  0.45  1.0
  O  O26  1  0.66  0.09  0.85  1.0
  O  O27  1  0.69  0.34  0.33  1.0
  O  O28  1  0.76  0.48  0.45  1.0
  O  O29  1  0.79  0.23  0.97  1.0
  O  O30  1  0.91  0.1  0.97  1.0
  O  O31  1  0.91  0.6  0.45  1.0

K K K K K K Cr Cr H H H H H H H H H H H H O O O O O O O O O O O O
K K K K K K Cr Cr H H H H H H H H H H H H O O O O O O O O O O O O 0 16 o o o 0 12 - o o 1 15 o o o 1 10 o o o 1 11 o o o 1 17 o o + 2 14 o o o 3 10 o o o 4 9 o o o 4 11 o o o 4 16 o o o 4 17 o o + 5 8 o o o 6 24 - o - 6 12 - o o 6 18 o - o 7 8 - - o 7 14 o o o 7 12 - o o 9 11 o o o 9 16 o o o 9 17 o o + 10 15 o o o 10 17 o o + 11 16 o o o 11 19 o o o 11 25 o o - 11 29 o o o 11 13 o o o 11 31 o o o 11 22 o o o 11 15 o o o 12 13 o o o 12 23 o o - 12 31 o o o 12 30 + - o 12 24 o o - 13 31 o o o 13 22 o o o 13 17 o o o 15 17 o o + 17 28 o o - 17 25 o o - 17 19 o o o 17 23 o o - 17 31 o o o 19 28 o o - 19 25 o o - 20 22 o o o 21 29 o o o 22 31 o o o 23 27 o o o 23 24 o o o 25 28 o o o 26 28 o o o 29 30 o o o 
K3Cr(HO)6 is beta Polonium structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one K3Cr(HO)6 cluster. There are four inequivalent K sites. In the first K site, K(1) is bonded in a 3-coordinate geometry to one H(5), one H(7), one H(9), and one O(7) atom. The K(1)-H(5) bond length is 2.75 Å. The K(1)-H(7) bond length is 1.68 Å. The K(1)-H(9) bond length is 1.31 Å. The K(1)-O(7) bond length is 1.94 Å. In the second K site, K(2,5) is bonded in a distorted single-bond geometry to one H(2,8); one H(3); one H(4,10); and one O(3,9) atom. The K(2,5)-H(2,8) bond length is 0.85 Å. The K(2,5)-H(3) bond length is 1.26 Å. The K(2,5)-H(4,10) bond length is 2.78 Å. The K(2,5)-O(3,9) bond length is 1.56 Å. In the third K site, K(3,6) is bonded in a distorted water-like geometry to one H(7) and one O(2) atom. The K(3,6)-H(7) bond length is 1.26 Å. The K(3,6)-O(2) bond length is 1.98 Å. In the fourth K site, K(4) is bonded in a 3-coordinate geometry to one H(1), one H(3), and one O(1) atom. The K(4)-H(1) bond length is 1.68 Å. The K(4)-H(3) bond length is 1.31 Å. The K(4)-O(1) bond length is 1.94 Å. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded in a 2-coordinate geometry to one H(11) and one O(5) atom. The Cr(1)-H(11) bond length is 1.35 Å. The Cr(1)-O(5) bond length is 1.10 Å. In the second Cr site, Cr(2) is bonded in a linear geometry to one H(1), one H(7), and one O(11) atom. The Cr(2)-H(1) bond length is 1.23 Å. The Cr(2)-H(7) bond length is 1.23 Å. The Cr(2)-O(11) bond length is 2.56 Å. There are nine inequivalent H sites. In the first H site, H(1) is bonded in a T-shaped geometry to one K(3,6); one K(4); and one Cr(2) atom. The H(1)-K(3,6) bond length is 1.26 Å. In the second H site, H(2,8) is bonded in a single-bond geometry to one K(2,5) atom. In the third H site, H(3) is bonded in a 3-coordinate geometry to one K(2,5); one K(4); and one O(3,9) atom. The H(3)-O(3,9) bond length is 1.53 Å. In the fourth H site, H(4,10) is bonded in a single-bond geometry to one K(2,5) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one K(1) atom. In the sixth H site, H(6,12) is bonded in a 2-coordinate geometry to one O(1); one O(3,9); and one O(6,12) atom. The H(6,12)-O(1) bond length is 1.64 Å. The H(6,12)-O(3,9) bond length is 1.19 Å. The H(6,12)-O(6,12) bond length is 1.07 Å. In the seventh H site, H(7) is bonded in a T-shaped geometry to one K(1); one K(3,6); and one Cr(2) atom. In the eighth H site, H(9) is bonded in a 3-coordinate geometry to one K(1); one K(2,5); and one O(3,9) atom. The H(9)-K(2,5) bond length is 1.26 Å. The H(9)-O(3,9) bond length is 1.53 Å. In the ninth H site, H(11) is bonded in a single-bond geometry to one Cr(1) atom. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one K(4); one H(6,12); and one O(3,9) atom. The O(1)-O(3,9) bond length is 1.34 Å. In the second O site, O(2) is bonded in a distorted single-bond geometry to one K(3,6) and one O(10) atom. The O(2)-O(10) bond length is 1.47 Å. In the third O site, O(3,9) is bonded in a 3-coordinate geometry to one K(2,5); one H(3); one H(6,12); and one O(1) atom. In the fourth O site, O(4) is bonded in an L-shaped geometry to one O(5) and one O(8) atom. The O(4)-O(5) bond length is 1.36 Å. The O(4)-O(8) bond length is 1.47 Å. In the fifth O site, O(5) is bonded in a single-bond geometry to one Cr(1) and one O(4) atom. In the sixth O site, O(6,12) is bonded in a single-bond geometry to one H(6,12) atom. In the seventh O site, O(7) is bonded in a 3-coordinate geometry to one K(1); one H(6,12); and one O(3,9) atom. The O(7)-H(6,12) bond length is 1.64 Å. The O(7)-O(3,9) bond length is 1.34 Å. In the eighth O site, O(8) is bonded in a distorted single-bond geometry to one K(3,6) and one O(4) atom. The O(8)-K(3,6) bond length is 1.98 Å. In the ninth O site, O(10) is bonded in an L-shaped geometry to one O(11) and one O(2) atom. The O(10)-O(11) bond length is 1.36 Å. In the tenth O site, O(11) is bonded in a 2-coordinate geometry to one Cr(2) and one O(10) atom.