The structure described by K2Mo2O7 crystallizes in the triclinic P-1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and two equivalent O(6) atoms. In the second K site, K(2) is bonded in a 9-coordinate geometry to one O(1), one O(5), one O(6), two equivalent O(2), two equivalent O(4), and two equivalent O(7) atoms. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a tetrahedral geometry to one O(1), one O(3), one O(4), and one O(5) atom. In the second Mo site, Mo(2) is bonded in a 6-coordinate geometry to one O(3), one O(5), one O(6), one O(7), and two equivalent O(2) atoms. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one K(1), one K(2), and one Mo(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one K(1), two equivalent K(2), and two equivalent Mo(2) atoms. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one Mo(1), and one Mo(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one K(1), two equivalent K(2), and one Mo(1) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one K(1), one K(2), one Mo(1), and one Mo(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one K(2), two equivalent K(1), and one Mo(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to two equivalent K(2) and one Mo(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Mo2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.959
_cell_length_b   7.231
_cell_length_c   7.538
_cell_angle_alpha   82.379
_cell_angle_beta   68.523
_cell_angle_gamma   85.808
_symmetry_Int_Tables_number   1
_cell_volume   349.699
_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  0.695  0.839  0.843  1.0
  K  K1  1  0.305  0.161  0.157  1.0
  K  K2  1  0.761  0.381  0.566  1.0
  K  K3  1  0.239  0.619  0.434  1.0
  Mo  Mo4  1  0.247  0.088  0.692  1.0
  Mo  Mo5  1  0.753  0.912  0.308  1.0
  Mo  Mo6  1  0.174  0.650  0.945  1.0
  Mo  Mo7  1  0.826  0.350  0.055  1.0
  O  O8  1  0.511  0.091  0.649  1.0
  O  O9  1  0.489  0.909  0.351  1.0
  O  O10  1  0.942  0.530  0.858  1.0
  O  O11  1  0.058  0.470  0.142  1.0
  O  O12  1  0.120  0.186  0.907  1.0
  O  O13  1  0.880  0.814  0.093  1.0
  O  O14  1  0.824  0.770  0.481  1.0
  O  O15  1  0.176  0.230  0.519  1.0
  O  O16  1  0.851  0.150  0.268  1.0
  O  O17  1  0.149  0.850  0.732  1.0
  O  O18  1  0.288  0.793  0.044  1.0
  O  O19  1  0.712  0.207  0.956  1.0
  O  O20  1  0.618  0.461  0.213  1.0
  O  O21  1  0.382  0.539  0.787  1.0
[/CIF]
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The structure described by K2Mo2O7 crystallizes in the triclinic P-1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 7-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), and two equivalent O(6) atoms. In the second K site, K(2) is bonded in a 9-coordinate geometry to one O(1), one O(5), one O(6), two equivalent O(2), two equivalent O(4), and two equivalent O(7) atoms. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded in a tetrahedral geometry to one O(1), one O(3), one O(4), and one O(5) atom. In the second Mo site, Mo(2) is bonded in a 6-coordinate geometry to one O(3), one O(5), one O(6), one O(7), and two equivalent O(2) atoms. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one K(1), one K(2), and one Mo(1) atom. In the second O site, O(2) is bonded in a 5-coordinate geometry to one K(1), two equivalent K(2), and two equivalent Mo(2) atoms. In the third O site, O(3) is bonded in a 3-coordinate geometry to one K(1), one Mo(1), and one Mo(2) atom. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to one K(1), two equivalent K(2), and one Mo(1) atom. In the fifth O site, O(5) is bonded in a 4-coordinate geometry to one K(1), one K(2), one Mo(1), and one Mo(2) atom. In the sixth O site, O(6) is bonded in a 4-coordinate geometry to one K(2), two equivalent K(1), and one Mo(2) atom. In the seventh O site, O(7) is bonded in a distorted single-bond geometry to two equivalent K(2) and one Mo(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_K2Mo2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.959
_cell_length_b   7.231
_cell_length_c   7.538
_cell_angle_alpha   82.379
_cell_angle_beta   68.523
_cell_angle_gamma   85.808
_symmetry_Int_Tables_number   1
_cell_volume   349.699
_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  0.695  0.839  0.843  1.0
  K  K1  1  0.305  0.161  0.157  1.0
  K  K2  1  0.761  0.381  0.566  1.0
  K  K3  1  0.239  0.619  0.434  1.0
  Mo  Mo4  1  0.247  0.088  0.692  1.0
  Mo  Mo5  1  0.753  0.912  0.308  1.0
  Mo  Mo6  1  0.174  0.650  0.945  1.0
  Mo  Mo7  1  0.826  0.350  0.055  1.0
  O  O8  1  0.511  0.091  0.649  1.0
  O  O9  1  0.489  0.909  0.351  1.0
  O  O10  1  0.942  0.530  0.858  1.0
  O  O11  1  0.058  0.470  0.142  1.0
  O  O12  1  0.120  0.186  0.907  1.0
  O  O13  1  0.880  0.814  0.093  1.0
  O  O14  1  0.824  0.770  0.481  1.0
  O  O15  1  0.176  0.230  0.519  1.0
  O  O16  1  0.851  0.150  0.268  1.0
  O  O17  1  0.149  0.850  0.732  1.0
  O  O18  1  0.288  0.793  0.044  1.0
  O  O19  1  0.712  0.207  0.956  1.0
  O  O20  1  0.618  0.461  0.213  1.0
  O  O21  1  0.382  0.539  0.787  1.0
[/CIF]
.