#------------------------------------------------------------------------------
#$Date: 2019-03-05 09:52:05 +0100 (mar 05 de mar de 2019) $
#$Revision: 213973 $
#$URL: svn://www.crystallography.net/cod/cif/7/20/45/7204575.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_7204575
loop_
_publ_author_name
'Lewis, T. C.'
'Tocher, D. A.'
'Day, G. M.'
'Price, S. L.'
_publ_section_title
;
 A computational and experimental search for polymorphs of parabanic
 acid -- a salutary tale leading to the crystal structure of
 oxo-ureido-acetic acid methyl esterElectronic supplementary
 information (ESI) available: crystal structures of the 16 lattice
 energy minima in Table 2, in the space group setting used in the
 minimisation. See http://www.rsc.org/suppdata/ce/b2/b211784c/
;
_journal_issue                   2
_journal_name_full               CrystEngComm
_journal_page_first              3
_journal_paper_doi               10.1039/b211784c
_journal_volume                  5
_journal_year                    2003
_chemical_formula_sum            'C4 H6 N2 O4'
_chemical_formula_weight         146.11
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                70.112(4)
_cell_angle_beta                 85.814(4)
_cell_angle_gamma                74.095(4)
_cell_formula_units_Z            2
_cell_length_a                   5.5028(13)
_cell_length_b                   7.0583(16)
_cell_length_c                   8.2718(19)
_cell_measurement_temperature    150(2)
_cell_volume                     290.48(12)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.923
_diffrn_measurement_device_type  'Bruker SMART APEX diffractometer'
_diffrn_measurement_method       'ω rotation with narrow frames'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0158
_diffrn_reflns_av_sigmaI/netI    0.0217
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            2431
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         27.98
_diffrn_reflns_theta_min         2.62
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.151
_exptl_absorpt_correction_T_max  0.9940
_exptl_absorpt_correction_T_min  0.9734
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.670
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             152
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.403
_refine_diff_density_min         -0.259
_refine_diff_density_rms         0.060
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     104
_refine_ls_number_reflns         1294
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0408
_refine_ls_R_factor_gt           0.0379
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[σ²(Fo²)+(0.0713P)²+0.0622P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1048
_refine_ls_wR_factor_ref         0.1075
_reflns_number_gt                1197
_reflns_number_total             1294
_reflns_threshold_expression     I>2σ(I)
_cod_data_source_file            b211784c.txt
_cod_data_source_block           str0039
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7204575
loop_
_symmetry_equiv_pos_as_xyz
'x, y, z'
'-x, -y, -z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_occupancy
_atom_site_symmetry_multiplicity
_atom_site_calc_flag
_atom_site_refinement_flags
_atom_site_disorder_assembly
_atom_site_disorder_group
N1 N 0.7487(2) 0.92665(16) 0.13210(14) 0.0200(3) Uani 1 1 d . . .
H1 H 0.833(4) 1.025(3) 0.094(2) 0.035(5) Uiso 1 1 d . . .
C1 C 0.8357(2) 0.75753(18) 0.08768(15) 0.0158(3) Uani 1 1 d . . .
C2 C 0.4989(2) 0.60531(19) 0.25113(15) 0.0163(3) Uani 1 1 d . . .
C3 C 0.4139(2) 0.40408(18) 0.29279(15) 0.0169(3) Uani 1 1 d . . .
C4 C 0.1223(2) 0.2207(2) 0.43363(17) 0.0210(3) Uani 1 1 d . . .
H4A H 0.0821 0.1980 0.3293 0.032 Uiso 1 1 calc R . .
H4B H -0.0293 0.2366 0.5030 0.032 Uiso 1 1 calc R . .
H4C H 0.2554 0.1006 0.5004 0.032 Uiso 1 1 calc R . .
N2 N 0.70212(19) 0.60337(16) 0.14670(13) 0.0169(3) Uani 1 1 d . . .
H2A H 0.766(3) 0.491(3) 0.114(2) 0.023(4) Uiso 1 1 d . . .
H2B H 0.604(3) 0.942(3) 0.198(2) 0.027(4) Uiso 1 1 d . . .
O1 O 1.02424(17) 0.72479(14) 0.00029(12) 0.0214(2) Uani 1 1 d . . .
O2 O 0.39496(17) 0.74200(15) 0.30988(12) 0.0230(3) Uani 1 1 d . . .
O3 O 0.52775(18) 0.26207(15) 0.24454(14) 0.0267(3) Uani 1 1 d . . .
O4 O 0.20952(16) 0.40952(14) 0.38618(12) 0.0191(2) Uani 1 1 d . . .
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_23
_atom_site_aniso_U_13
_atom_site_aniso_U_12
N1 0.0204(5) 0.0148(5) 0.0293(6) -0.0141(4) 0.0095(4) -0.0059(4)
C1 0.0162(6) 0.0131(5) 0.0194(6) -0.0084(4) 0.0034(4) -0.0029(4)
C2 0.0149(6) 0.0145(6) 0.0204(6) -0.0091(5) 0.0034(4) -0.0020(4)
C3 0.0143(5) 0.0164(6) 0.0204(6) -0.0085(5) 0.0044(4) -0.0029(4)
C4 0.0208(6) 0.0170(6) 0.0264(6) -0.0083(5) 0.0079(5) -0.0072(5)
N2 0.0173(5) 0.0129(5) 0.0229(5) -0.0107(4) 0.0068(4) -0.0036(4)
O1 0.0218(5) 0.0176(4) 0.0297(5) -0.0149(4) 0.0133(4) -0.0072(4)
O2 0.0215(5) 0.0195(5) 0.0333(5) -0.0176(4) 0.0127(4) -0.0059(4)
O3 0.0264(5) 0.0188(5) 0.0413(6) -0.0197(4) 0.0173(4) -0.0085(4)
O4 0.0172(5) 0.0158(4) 0.0260(5) -0.0102(4) 0.0087(4) -0.0050(3)
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
_geom_angle_site_symmetry_1
_geom_angle_site_symmetry_3
_geom_angle_publ_flag
O1 C1 N1 125.06(11) . . ?
O1 C1 N2 118.17(11) . . ?
N1 C1 N2 116.76(10) . . ?
O2 C2 N2 126.60(11) . . ?
O2 C2 C3 122.05(10) . . ?
N2 C2 C3 111.33(10) . . ?
O3 C3 O4 126.25(11) . . ?
O3 C3 C2 122.07(11) . . ?
O4 C3 C2 111.67(10) . . ?
C2 N2 C1 127.01(11) . . ?
C3 O4 C4 114.40(10) . . ?
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
_geom_bond_publ_flag
N1 C1 1.3224(15) . ?
C1 O1 1.2349(14) . ?
C1 N2 1.4098(15) . ?
C2 O2 1.2125(15) . ?
C2 N2 1.3622(15) . ?
C2 C3 1.5371(17) . ?
C3 O3 1.2034(16) . ?
C3 O4 1.3162(14) . ?
C4 O4 1.4588(15) . ?
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
_geom_torsion_site_symmetry_1
_geom_torsion_site_symmetry_2
_geom_torsion_site_symmetry_3
_geom_torsion_site_symmetry_4
_geom_torsion_publ_flag
O2 C2 C3 O3 -174.63(12) . . . . ?
N2 C2 C3 O3 4.02(17) . . . . ?
O2 C2 C3 O4 4.70(18) . . . . ?
N2 C2 C3 O4 -176.66(9) . . . . ?
O2 C2 N2 C1 1.1(2) . . . . ?
C3 C2 N2 C1 -177.49(10) . . . . ?
O1 C1 N2 C2 176.41(11) . . . . ?
N1 C1 N2 C2 -3.12(18) . . . . ?
O3 C3 O4 C4 0.66(19) . . . . ?
C2 C3 O4 C4 -178.63(9) . . . . ?
loop_
_cod_related_entry_id
_cod_related_entry_database
_cod_related_entry_code
1 ChemSpider 21149573
