The structure described by Er2C(NO)2 crystallizes in the trigonal P-3m1 space group. Er(1) is bonded in a 7-coordinate geometry to three equivalent N(1) and four equivalent O(1) atoms. C(1) is bonded in a linear geometry to two equivalent N(1) atoms. N(1) is bonded in a 4-coordinate geometry to three equivalent Er(1) and one C(1) atom. O(1) is bonded to four equivalent Er(1) atoms to form a mixture of edge and corner-sharing OEr4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er2C(NO)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.691
_cell_length_b   3.691
_cell_length_c   8.160
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   96.281
_cell_formula_units_Z   1
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
  Er  Er0  1  0.667  0.333  0.176  1.0
  Er  Er1  1  0.333  0.667  0.824  1.0
  C  C2  1  0.000  0.000  0.500  1.0
  N  N3  1  0.000  0.000  0.349  1.0
  N  N4  1  0.000  0.000  0.651  1.0
  O  O5  1  0.333  0.667  0.103  1.0
  O  O6  1  0.667  0.333  0.897  1.0
[/CIF]
.
The structure described by Er2C(NO)2 crystallizes in the trigonal P-3m1 space group. Er(1) is bonded in a 7-coordinate geometry to three equivalent N(1) and four equivalent O(1) atoms. C(1) is bonded in a linear geometry to two equivalent N(1) atoms. N(1) is bonded in a 4-coordinate geometry to three equivalent Er(1) and one C(1) atom. O(1) is bonded to four equivalent Er(1) atoms to form a mixture of edge and corner-sharing OEr4 tetrahedra. is represented by the Crystallographic Information File (CIF) [CIF]
data_Er2C(NO)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.691
_cell_length_b   3.691
_cell_length_c   8.160
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   120.000
_symmetry_Int_Tables_number   1
_cell_volume   96.281
_cell_formula_units_Z   1
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
  Er  Er0  1  0.667  0.333  0.176  1.0
  Er  Er1  1  0.333  0.667  0.824  1.0
  C  C2  1  0.000  0.000  0.500  1.0
  N  N3  1  0.000  0.000  0.349  1.0
  N  N4  1  0.000  0.000  0.651  1.0
  O  O5  1  0.333  0.667  0.103  1.0
  O  O6  1  0.667  0.333  0.897  1.0
[/CIF]
.