Eight new crystal structures of 5-(hydroxymethyl)uracil, 5-carboxyuracil and 5-carboxy-2-thiouracil: insights into the hydrogen-bonded networks and the predominant conformations of the C5-bound residues
Seiler, Vanessa Kristina; Hützler, Wilhelm Maximilian; Bolte, Michael; Acta Crystallographica Section C 72 (2016) 379–388; doi:10.1107/S2053229616004861

data_2020470
_publ_section_title
;
 Eight new crystal structures of 5-(hydroxymethyl)uracil, 5-carboxyuracil
 and 5-carboxy-2-thiouracil: insights into the hydrogen-bonded networks
 and the predominant conformations of the C5-bound residues
;
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              379
_journal_page_last               388
_journal_paper_doi               10.1107/S2053229616004861
_journal_volume                  72
_journal_year                    2016
_chemical_formula_iupac          'C5 H4 N2 O3 S, C2 H6 O S'
_chemical_formula_moiety         'C5 H4 N2 O3 S, C2 H6 O S'
_chemical_formula_sum            'C7 H10 N2 O4 S2'
_chemical_formula_weight         250.29
_chemical_name_systematic
;
4-Oxo-2-sulfanylidene-1,2,3,4-tetrahydropyrimidine-5-carboxylic acid
dimethyl sulfoxide monosolvate
;
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                115.790(10)
_cell_angle_beta                 95.753(11)
_cell_angle_gamma                95.791(10)
_cell_formula_units_Z            2
_cell_length_a                   7.0475(9)
_cell_length_b                   8.9534(12)
_cell_length_c                   9.2802(13)
_cell_measurement_reflns_used    5472
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.10
_cell_measurement_theta_min      3.53
_cell_volume                     517.72(13)
_computing_cell_refinement
;
X-AREA (Stoe & Cie, 2001)
;
_computing_data_collection
;
X-AREA (Stoe & Cie, 2001)
;
_computing_data_reduction
;
X-AREA (Stoe & Cie, 2001)
;
_computing_molecular_graphics
;
Mercury (Macrae <i>et al.</i>,  2008) and XP in SHELXTL-Plus (Sheldrick,
2008)
;
_computing_publication_material
;
publCIF (Westrip, 2010)
;
_computing_structure_refinement
;
SHELXL2014 (Sheldrick, 2015)
;
_computing_structure_solution
;
SHELXS97 (Sheldrick, 2008)
;
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Stoe IPDS II two-circle'
_diffrn_measurement_method       \w
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0331
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            4538
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         25.813
_diffrn_reflns_theta_min         3.526
_exptl_absorpt_coefficient_mu    0.510
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.746
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
(X-AREA; Stoe & Cie, 2001)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.606
_exptl_crystal_description       block
_exptl_crystal_F_000             260
_exptl_crystal_size_max          0.300
_exptl_crystal_size_mid          0.250
_exptl_crystal_size_min          0.150
_refine_diff_density_max         0.397
_refine_diff_density_min         -0.229
_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     147
_refine_ls_number_reflns         1976
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0340
_refine_ls_R_factor_gt           0.0270
_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^)+(0.0370P)^2^+0.1288P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0675
_refine_ls_wR_factor_ref         0.0700
_reflns_number_gt                1703
_reflns_number_total             1976
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            eg3200sup1.cif
_cod_data_source_block           VI
_cod_depositor_comments
'Adding full bibliography for 2020465--2020472.cif.'
_cod_database_code               2020470
_cod_database_fobs_code          2020470
_shelx_estimated_absorpt_t_min   0.862
_shelx_estimated_absorpt_t_max   0.927
_shelx_hkl_checksum              46053
_shelx_res_checksum              56172