The structure described by (CeAs(O2F)2)2N2 crystallizes in the monoclinic P2_1/m space group. The structure consists of two ammonia atoms inside a CeAs(O2F)2 framework. In the CeAs(O2F)2 framework, Ce(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), two equivalent O(2), and four equivalent F(1) atoms. As(1) is bonded in a tetrahedral geometry to one O(1), one O(3), and two equivalent O(2) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Ce(1) and one As(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Ce(1) and one As(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Ce(1) and one As(1) atom. F(1) is bonded in a bent 120 degrees geometry to two equivalent Ce(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_CeAsN(O2F)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.016
_cell_length_b   5.981
_cell_length_c   7.361
_cell_angle_alpha   90.000
_cell_angle_beta   112.593
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   285.195
_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
  Ce  Ce0  1  0.387  0.750  0.319  1.0
  Ce  Ce1  1  0.613  0.250  0.681  1.0
  As  As2  1  0.775  0.750  0.044  1.0
  As  As3  1  0.225  0.250  0.956  1.0
  N  N4  1  0.051  0.750  0.678  1.0
  N  N5  1  0.949  0.250  0.322  1.0
  O  O6  1  0.002  0.750  0.248  1.0
  O  O7  1  0.998  0.250  0.752  1.0
  O  O8  1  0.761  0.981  0.901  1.0
  O  O9  1  0.239  0.481  0.099  1.0
  O  O10  1  0.239  0.019  0.099  1.0
  O  O11  1  0.761  0.519  0.901  1.0
  O  O12  1  0.565  0.750  0.107  1.0
  O  O13  1  0.435  0.250  0.893  1.0
  F  F14  1  0.654  0.004  0.456  1.0
  F  F15  1  0.346  0.504  0.544  1.0
  F  F16  1  0.346  0.996  0.544  1.0
  F  F17  1  0.654  0.496  0.456  1.0
[/CIF]
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The structure described by (CeAs(O2F)2)2N2 crystallizes in the monoclinic P2_1/m space group. The structure consists of two ammonia atoms inside a CeAs(O2F)2 framework. In the CeAs(O2F)2 framework, Ce(1) is bonded in a 8-coordinate geometry to one O(1), one O(3), two equivalent O(2), and four equivalent F(1) atoms. As(1) is bonded in a tetrahedral geometry to one O(1), one O(3), and two equivalent O(2) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to one Ce(1) and one As(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Ce(1) and one As(1) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Ce(1) and one As(1) atom. F(1) is bonded in a bent 120 degrees geometry to two equivalent Ce(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_CeAsN(O2F)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.016
_cell_length_b   5.981
_cell_length_c   7.361
_cell_angle_alpha   90.000
_cell_angle_beta   112.593
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   285.195
_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
  Ce  Ce0  1  0.387  0.750  0.319  1.0
  Ce  Ce1  1  0.613  0.250  0.681  1.0
  As  As2  1  0.775  0.750  0.044  1.0
  As  As3  1  0.225  0.250  0.956  1.0
  N  N4  1  0.051  0.750  0.678  1.0
  N  N5  1  0.949  0.250  0.322  1.0
  O  O6  1  0.002  0.750  0.248  1.0
  O  O7  1  0.998  0.250  0.752  1.0
  O  O8  1  0.761  0.981  0.901  1.0
  O  O9  1  0.239  0.481  0.099  1.0
  O  O10  1  0.239  0.019  0.099  1.0
  O  O11  1  0.761  0.519  0.901  1.0
  O  O12  1  0.565  0.750  0.107  1.0
  O  O13  1  0.435  0.250  0.893  1.0
  F  F14  1  0.654  0.004  0.456  1.0
  F  F15  1  0.346  0.504  0.544  1.0
  F  F16  1  0.346  0.996  0.544  1.0
  F  F17  1  0.654  0.496  0.456  1.0
[/CIF]
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