#------------------------------------------------------------------------------
#$Date: 2025-08-19 11:01:59 +0100 (Tue, 19 Aug 2025) $
#$Revision: 301802 $
#$URL: svn://www.crystallography.net/cod/cif/2/10/42/2104208.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided by IUCr Journals, http://journals.iucr.org/.
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_2104208
loop_
_publ_author_name
'Gryl, Marlena'
'Krawczuk, Anna'
'Stadnicka, Katarzyna'
_publ_section_title
;
 Polymorphism of urea--barbituric acid co-crystals
;
_journal_coeditor_code           BS5065
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first              623
_journal_page_last               632
_journal_paper_doi               10.1107/S0108768108026645
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          'C5 H8 N4 O4'
_chemical_formula_moiety         'C4 H4 N2 O3, C H4 N2 O'
_chemical_formula_sum            'C5 H8 N4 O4'
_chemical_formula_weight         188.15
_chemical_name_common            'barbituric acid urea addition compound'
_chemical_name_systematic
;
 2,4,6(1H,3H,5H)-Pyrimidinetrione urea addition compound
;
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 1'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 110.570(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.9423(7)
_cell_length_b                   5.0984(3)
_cell_length_c                   10.5534(5)
_cell_measurement_reflns_used    1182
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      30.034
_cell_measurement_theta_min      0.998
_cell_volume                     803.09(7)
_computing_cell_refinement       'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'KappaCCD Server Software (Nonius, 1997)'
_computing_data_reduction
'HKL DENZO and Scalepack (Otwinowski & Minor, 1997)'
_computing_molecular_graphics
;
  PLATON (Spek, 2003); ORTEP-3 for Windows (Farrugia, 1997); MERCURY (Version
  1.4; Macrae et al., 2006)
;
_computing_publication_material  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       ' \w scans at \c = 55 \% '
_diffrn_radiation_monochromator  'horizontally mounted graphite crystal'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0155
_diffrn_reflns_av_sigmaI/netI    0.0312
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            3691
_diffrn_reflns_theta_full        30.04
_diffrn_reflns_theta_max         30.04
_diffrn_reflns_theta_min         4.07
_exptl_absorpt_coefficient_mu    0.135
_exptl_absorpt_correction_T_max  0.9840
_exptl_absorpt_correction_T_min  0.9581
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'HKL DENZO and Scalepack (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.556
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             392
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.145
_refine_diff_density_min         -0.172
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   1.059
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     118
_refine_ls_number_reflns         1169
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.059
_refine_ls_restrained_S_obs      1.059
_refine_ls_R_factor_all          0.0352
_refine_ls_R_factor_gt           0.0325
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0491P)^2^+0.0769P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0846
_refine_ls_wR_factor_ref         0.0827
_reflns_number_gt                1099
_reflns_number_total             1169
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            bs5065.cif
_cod_data_source_block           II
_cod_original_sg_symbol_H-M      'C c '
_cod_database_code               2104208
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'x, -y, z+1/2'
'x+1/2, y+1/2, z'
'x+1/2, -y+1/2, z+1/2'
loop_
_atom_site_type_symbol
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_calc_flag
_atom_site_refinement_flags
_atom_site_occupancy
O O1 0.76305(8) 0.5526(3) 0.56200(11) 0.0355(3) Uani d . 1
C C1 0.68332(11) 0.4865(4) 0.49837(16) 0.0311(3) Uani d . 1
N N2 0.64621(11) 0.2830(4) 0.53835(17) 0.0497(4) Uani d . 1
H H2A 0.6769 0.1945 0.6088 0.060 Uiso calc R 1
H H2B 0.5916 0.2403 0.4937 0.060 Uiso calc R 1
N N4 0.63236(12) 0.6185(4) 0.38989(18) 0.0508(5) Uani d . 1
H H4A 0.6538 0.7522 0.3619 0.061 Uiso calc R 1
H H4B 0.5780 0.5701 0.3477 0.061 Uiso calc R 1
N N1 0.84095(10) -0.0066(3) 0.49126(14) 0.0326(3) Uani d . 1
H H1 0.8125 -0.1336 0.5117 0.039 Uiso calc R 1
C C2 0.80045(10) 0.1134(3) 0.36886(16) 0.0314(3) Uani d . 1
O O2 0.72846(10) 0.0353(3) 0.28983(13) 0.0462(4) Uani d . 1
N N3 0.84309(9) 0.3242(3) 0.33813(13) 0.0329(3) Uani d . 1
H H3 0.8166 0.4013 0.2620 0.039 Uiso calc R 1
C C4 0.92426(10) 0.4221(3) 0.41845(16) 0.0320(3) Uani d . 1
O O4 0.95950(10) 0.6007(3) 0.37923(15) 0.0470(4) Uani d . 1
C C5 0.96514(11) 0.3047(3) 0.55714(16) 0.0354(3) Uani d . 1
H H5A 1.0277 0.2683 0.5729 0.042 Uiso calc R 1
H H5B 0.9632 0.4353 0.6229 0.042 Uiso calc R 1
C C6 0.92271(10) 0.0581(3) 0.58379(15) 0.0306(3) Uani d . 1
O O6 0.95728(9) -0.0776(3) 0.68302(14) 0.0446(3) Uani d . 1
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
O1 0.0288(6) 0.0431(7) 0.0289(6) -0.0064(5) 0.0028(5) -0.0013(5)
C1 0.0285(7) 0.0362(8) 0.0260(6) -0.0022(6) 0.0063(5) -0.0055(5)
N2 0.0359(8) 0.0574(10) 0.0457(9) -0.0149(7) 0.0016(7) 0.0097(8)
N4 0.0362(8) 0.0540(10) 0.0451(9) -0.0113(7) -0.0072(7) 0.0129(8)
N1 0.0286(6) 0.0329(6) 0.0314(6) -0.0052(5) 0.0043(5) 0.0017(5)
C2 0.0277(7) 0.0365(8) 0.0273(7) -0.0035(6) 0.0065(6) -0.0024(6)
O2 0.0369(7) 0.0572(8) 0.0335(6) -0.0138(6) -0.0013(5) 0.0014(6)
N3 0.0323(6) 0.0401(7) 0.0233(6) -0.0030(5) 0.0061(5) 0.0019(5)
C4 0.0299(8) 0.0337(8) 0.0312(7) -0.0024(6) 0.0095(6) -0.0020(6)
O4 0.0440(7) 0.0506(8) 0.0424(7) -0.0146(6) 0.0101(6) 0.0082(6)
C5 0.0305(7) 0.0385(8) 0.0318(8) -0.0067(6) 0.0041(6) 0.0001(6)
C6 0.0264(7) 0.0321(7) 0.0289(7) 0.0005(6) 0.0045(6) -0.0012(6)
O6 0.0385(7) 0.0435(7) 0.0390(7) -0.0041(6) -0.0022(5) 0.0097(5)
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0033 0.0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
H H 0.0000 0.0000 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
N N 0.0061 0.0033 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
O O 0.0106 0.0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
O1 C1 N4 121.4(2)
O1 C1 N2 121.1(2)
N4 C1 N2 117.5(2)
C1 N2 H2A 120.0
C1 N2 H2B 120.0
H2A N2 H2B 120.0
C1 N4 H4A 120.0
C1 N4 H4B 120.0
H4A N4 H4B 120.0
C6 N1 C2 125.6(2)
C6 N1 H1 117.2
C2 N1 H1 117.2
O2 C2 N1 121.1(2)
O2 C2 N3 121.2(2)
N1 C2 N3 117.70(10)
C4 N3 C2 125.40(10)
C4 N3 H3 117.3
C2 N3 H3 117.3
O4 C4 N3 120.8(2)
O4 C4 C5 122.4(2)
N3 C4 C5 116.80(10)
C6 C5 C4 116.60(10)
C6 C5 H5A 108.2
C4 C5 H5A 108.2
C6 C5 H5B 108.2
C4 C5 H5B 108.2
H5A C5 H5B 107.3
O6 C6 N1 120.6(2)
O6 C6 C5 122.80(10)
N1 C6 C5 116.60(10)
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
O1 C1 1.257(2)
C1 N4 1.330(2)
C1 N2 1.334(2)
N2 H2A 0.8600
N2 H2B 0.8600
N4 H4A 0.8600
N4 H4B 0.8600
N1 C6 1.366(2)
N1 C2 1.369(2)
N1 H1 0.8600
C2 O2 1.224(2)
C2 N3 1.370(2)
N3 C4 1.368(2)
N3 H3 0.8600
C4 O4 1.216(2)
C4 C5 1.502(2)
C5 C6 1.500(2)
C5 H5A 0.9700
C5 H5B 0.9700
C6 O6 1.214(2)
loop_
_geom_hbond_atom_site_label_D
_geom_hbond_atom_site_label_H
_geom_hbond_atom_site_label_A
_geom_hbond_site_symmetry_A
_geom_hbond_distance_DH
_geom_hbond_distance_HA
_geom_hbond_distance_DA
_geom_hbond_angle_DHA
N2 H2A O2 2 0.86 2.14 2.992(2) 169
N2 H2B O4 3_445 0.86 2.15 3.005(2) 175
N4 H4A O2 1_565 0.86 2.17 3.019(2) 169
N4 H4B O6 4_454 0.86 2.09 2.884(2) 153
N1 H1 O1 1_545 0.86 1.94 2.793(2) 172
N3 H3 O1 2_564 0.86 1.99 2.811(2) 158
loop_
_geom_torsion_atom_site_label_1
_geom_torsion_atom_site_label_2
_geom_torsion_atom_site_label_3
_geom_torsion_atom_site_label_4
_geom_torsion
C6 N1 C2 O2 177.1(2)
C6 N1 C2 N3 -3.1(2)
O2 C2 N3 C4 -178.6(2)
N1 C2 N3 C4 1.6(2)
C2 N3 C4 O4 175.6(2)
C2 N3 C4 C5 -6.4(2)
O4 C4 C5 C6 -170.2(2)
N3 C4 C5 C6 11.9(2)
C2 N1 C6 O6 -172.1(2)
C2 N1 C6 C5 9.2(2)
C4 C5 C6 O6 168.2(2)
C4 C5 C6 N1 -13.1(2)
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 ChemSpider 30654526
2 PubChem 66604723