The material structure described by C3H2N2O3 is Indium-like structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four parabanic acid molecules. There are three inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one N(1), one N(2), and one O(1) atom. In the second C site, C(2) is bonded in a 2-coordinate geometry to one N(2) and one O(2) atom. In the third C site, C(3) is bonded in a 2-coordinate geometry to one N(1) and one O(3) atom. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one C(1), one C(3), and one H(2) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one C(1), one C(2), and one H(1) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one N(1) atom. There are three inequivalent O sites. In the first O site, O(2) is bonded in a single-bond geometry to one C(2) atom. In the second O site, O(3) is bonded in a single-bond geometry to one C(3) atom. In the third O site, O(1) is bonded in a single-bond geometry to one C(1) atom. is represented by the CIF file [CIF]
data_H2C3N2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.599
_cell_length_b   5.212
_cell_length_c   11.926
_cell_angle_alpha   66.483
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   490.082
_cell_formula_units_Z   4
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
  H  H0  1  0.361  0.695  0.890  1.0
  H  H1  1  0.639  0.305  0.110  1.0
  H  H2  1  0.861  0.305  0.610  1.0
  H  H3  1  0.139  0.695  0.390  1.0
  H  H4  1  0.803  0.910  0.988  1.0
  H  H5  1  0.197  0.090  0.012  1.0
  H  H6  1  0.303  0.090  0.512  1.0
  H  H7  1  0.697  0.910  0.488  1.0
  C  C8  1  0.366  0.967  0.701  1.0
  C  C9  1  0.634  0.033  0.299  1.0
  C  C10  1  0.866  0.033  0.799  1.0
  C  C11  1  0.134  0.967  0.201  1.0
  C  C12  1  0.232  0.553  0.774  1.0
  C  C13  1  0.768  0.447  0.226  1.0
  C  C14  1  0.732  0.447  0.726  1.0
  C  C15  1  0.268  0.553  0.274  1.0
  C  C16  1  0.210  0.699  0.634  1.0
  C  C17  1  0.790  0.301  0.366  1.0
  C  C18  1  0.710  0.301  0.866  1.0
  C  C19  1  0.290  0.699  0.134  1.0
  N  N20  1  0.294  0.941  0.600  1.0
  N  N21  1  0.706  0.059  0.400  1.0
  N  N22  1  0.794  0.059  0.900  1.0
  N  N23  1  0.206  0.941  0.100  1.0
  N  N24  1  0.326  0.728  0.803  1.0
  N  N25  1  0.674  0.272  0.197  1.0
  N  N26  1  0.826  0.272  0.697  1.0
  N  N27  1  0.174  0.728  0.303  1.0
  O  O28  1  0.947  0.840  0.801  1.0
  O  O29  1  0.053  0.160  0.199  1.0
  O  O30  1  0.447  0.160  0.699  1.0
  O  O31  1  0.553  0.840  0.301  1.0
  O  O32  1  0.176  0.327  0.841  1.0
  O  O33  1  0.824  0.673  0.159  1.0
  O  O34  1  0.676  0.673  0.659  1.0
  O  O35  1  0.324  0.327  0.341  1.0
  O  O36  1  0.134  0.612  0.570  1.0
  O  O37  1  0.866  0.388  0.430  1.0
  O  O38  1  0.634  0.388  0.930  1.0
  O  O39  1  0.366  0.612  0.070  1.0
[/CIF]
.
The material structure described by C3H2N2O3 is Indium-like structured and crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four parabanic acid molecules. There are three inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one N(1), one N(2), and one O(1) atom. In the second C site, C(2) is bonded in a 2-coordinate geometry to one N(2) and one O(2) atom. In the third C site, C(3) is bonded in a 2-coordinate geometry to one N(1) and one O(3) atom. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one C(1), one C(3), and one H(2) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one C(1), one C(2), and one H(1) atom. There are two inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one N(1) atom. There are three inequivalent O sites. In the first O site, O(2) is bonded in a single-bond geometry to one C(2) atom. In the second O site, O(3) is bonded in a single-bond geometry to one C(3) atom. In the third O site, O(1) is bonded in a single-bond geometry to one C(1) atom. is represented by the CIF file [CIF]
data_H2C3N2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.599
_cell_length_b   5.212
_cell_length_c   11.926
_cell_angle_alpha   66.483
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   490.082
_cell_formula_units_Z   4
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
  H  H0  1  0.361  0.695  0.890  1.0
  H  H1  1  0.639  0.305  0.110  1.0
  H  H2  1  0.861  0.305  0.610  1.0
  H  H3  1  0.139  0.695  0.390  1.0
  H  H4  1  0.803  0.910  0.988  1.0
  H  H5  1  0.197  0.090  0.012  1.0
  H  H6  1  0.303  0.090  0.512  1.0
  H  H7  1  0.697  0.910  0.488  1.0
  C  C8  1  0.366  0.967  0.701  1.0
  C  C9  1  0.634  0.033  0.299  1.0
  C  C10  1  0.866  0.033  0.799  1.0
  C  C11  1  0.134  0.967  0.201  1.0
  C  C12  1  0.232  0.553  0.774  1.0
  C  C13  1  0.768  0.447  0.226  1.0
  C  C14  1  0.732  0.447  0.726  1.0
  C  C15  1  0.268  0.553  0.274  1.0
  C  C16  1  0.210  0.699  0.634  1.0
  C  C17  1  0.790  0.301  0.366  1.0
  C  C18  1  0.710  0.301  0.866  1.0
  C  C19  1  0.290  0.699  0.134  1.0
  N  N20  1  0.294  0.941  0.600  1.0
  N  N21  1  0.706  0.059  0.400  1.0
  N  N22  1  0.794  0.059  0.900  1.0
  N  N23  1  0.206  0.941  0.100  1.0
  N  N24  1  0.326  0.728  0.803  1.0
  N  N25  1  0.674  0.272  0.197  1.0
  N  N26  1  0.826  0.272  0.697  1.0
  N  N27  1  0.174  0.728  0.303  1.0
  O  O28  1  0.947  0.840  0.801  1.0
  O  O29  1  0.053  0.160  0.199  1.0
  O  O30  1  0.447  0.160  0.699  1.0
  O  O31  1  0.553  0.840  0.301  1.0
  O  O32  1  0.176  0.327  0.841  1.0
  O  O33  1  0.824  0.673  0.159  1.0
  O  O34  1  0.676  0.673  0.659  1.0
  O  O35  1  0.324  0.327  0.341  1.0
  O  O36  1  0.134  0.612  0.570  1.0
  O  O37  1  0.866  0.388  0.430  1.0
  O  O38  1  0.634  0.388  0.930  1.0
  O  O39  1  0.366  0.612  0.070  1.0
[/CIF]
.