The crystal structure described by Cr2O7N2 is Indium-derived structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of eight ammonia atoms and four Cr2O7 clusters. In each Cr2O7 cluster, Cr(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form corner-sharing CrO4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Cr(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Cr(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Cr(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to two equivalent Cr(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr2N2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.903
_cell_length_b   7.903
_cell_length_c   8.029
_cell_angle_alpha   87.427
_cell_angle_beta   87.427
_cell_angle_gamma   59.525
_symmetry_Int_Tables_number   1
_cell_volume   431.618
_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
  Cr  Cr0  1  0.069  0.731  0.857  1.0
  Cr  Cr1  1  0.269  0.931  0.643  1.0
  Cr  Cr2  1  0.931  0.269  0.143  1.0
  Cr  Cr3  1  0.731  0.069  0.357  1.0
  N  N4  1  0.798  0.491  0.656  1.0
  N  N5  1  0.509  0.202  0.844  1.0
  N  N6  1  0.202  0.509  0.344  1.0
  N  N7  1  0.491  0.798  0.156  1.0
  O  O8  1  0.239  0.640  0.997  1.0
  O  O9  1  0.360  0.761  0.503  1.0
  O  O10  1  0.761  0.360  0.003  1.0
  O  O11  1  0.640  0.239  0.497  1.0
  O  O12  1  0.857  0.792  0.945  1.0
  O  O13  1  0.208  0.143  0.555  1.0
  O  O14  1  0.143  0.208  0.055  1.0
  O  O15  1  0.792  0.857  0.445  1.0
  O  O16  1  0.130  0.552  0.726  1.0
  O  O17  1  0.448  0.870  0.774  1.0
  O  O18  1  0.870  0.448  0.274  1.0
  O  O19  1  0.552  0.130  0.226  1.0
  O  O20  1  0.063  0.937  0.750  1.0
  O  O21  1  0.937  0.063  0.250  1.0
[/CIF]
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The crystal structure described by Cr2O7N2 is Indium-derived structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of eight ammonia atoms and four Cr2O7 clusters. In each Cr2O7 cluster, Cr(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form corner-sharing CrO4 tetrahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a single-bond geometry to one Cr(1) atom. In the second O site, O(2) is bonded in a single-bond geometry to one Cr(1) atom. In the third O site, O(3) is bonded in a single-bond geometry to one Cr(1) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to two equivalent Cr(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Cr2N2O7
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.903
_cell_length_b   7.903
_cell_length_c   8.029
_cell_angle_alpha   87.427
_cell_angle_beta   87.427
_cell_angle_gamma   59.525
_symmetry_Int_Tables_number   1
_cell_volume   431.618
_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
  Cr  Cr0  1  0.069  0.731  0.857  1.0
  Cr  Cr1  1  0.269  0.931  0.643  1.0
  Cr  Cr2  1  0.931  0.269  0.143  1.0
  Cr  Cr3  1  0.731  0.069  0.357  1.0
  N  N4  1  0.798  0.491  0.656  1.0
  N  N5  1  0.509  0.202  0.844  1.0
  N  N6  1  0.202  0.509  0.344  1.0
  N  N7  1  0.491  0.798  0.156  1.0
  O  O8  1  0.239  0.640  0.997  1.0
  O  O9  1  0.360  0.761  0.503  1.0
  O  O10  1  0.761  0.360  0.003  1.0
  O  O11  1  0.640  0.239  0.497  1.0
  O  O12  1  0.857  0.792  0.945  1.0
  O  O13  1  0.208  0.143  0.555  1.0
  O  O14  1  0.143  0.208  0.055  1.0
  O  O15  1  0.792  0.857  0.445  1.0
  O  O16  1  0.130  0.552  0.726  1.0
  O  O17  1  0.448  0.870  0.774  1.0
  O  O18  1  0.870  0.448  0.274  1.0
  O  O19  1  0.552  0.130  0.226  1.0
  O  O20  1  0.063  0.937  0.750  1.0
  O  O21  1  0.937  0.063  0.250  1.0
[/CIF]
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