Sulfur as hydrogen-bond acceptor in cocrystals of 2-thio-modified thymine
Hützler, Wilhelm Maximilian; Bolte, Michael; Acta Crystallographica Section C 74 (2018) 21–30; doi:10.1107/S2053229617017181

data_2020976
_publ_section_title
;
 Sulfur as hydrogen-bond acceptor in cocrystals of 2-thio-modified thymine
;
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              21
_journal_page_last               30
_journal_paper_doi               10.1107/S2053229617017181
_journal_volume                  74
_journal_year                    2018
_chemical_formula_iupac          '2C5 H6 N2 O S, 2C4 H6 N4 O, C3 H7 N O'
_chemical_formula_moiety         '2(C5 H6 N2 O S), 2(C4 H6 N4 O), C3 H7 N O'
_chemical_formula_sum            'C21 H31 N13 O5 S2'
_chemical_formula_weight         609.71
_chemical_name_systematic
'5-Methyl-2-thiouracil--6-amino-3<i>H</i>-isocytosine--<i>N</i>,<i>N</i>-dimethylformamide (2/2/1)'
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 98.701(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   22.573(3)
_cell_length_b                   9.1593(12)
_cell_length_c                   13.9211(16)
_cell_measurement_reflns_used    13239
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      26.15
_cell_measurement_theta_min      3.23
_cell_volume                     2845.1(6)
_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 (Version 3.9, 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 0.998
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'STOE IPDS II two-circle diffractometer'
_diffrn_measurement_method       \w
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1218
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            11737
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         25.897
_diffrn_reflns_theta_min         3.235
_exptl_absorpt_coefficient_mu    0.245
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.362
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
(X-AREA; Stoe & Cie, 2001)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.423
_exptl_crystal_description       block
_exptl_crystal_F_000             1280
_exptl_crystal_size_max          0.150
_exptl_crystal_size_mid          0.100
_exptl_crystal_size_min          0.070
_refine_diff_density_max         0.465
_refine_diff_density_min         -0.215
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.015
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     228
_refine_ls_number_reflns         2741
_refine_ls_number_restraints     15
_refine_ls_restrained_S_all      1.015
_refine_ls_R_factor_all          0.0771
_refine_ls_R_factor_gt           0.0503
_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^)+(0.0529P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1061
_refine_ls_wR_factor_ref         0.1158
_reflns_number_gt                2052
_reflns_number_total             2741
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            eg3230sup1.cif
_cod_data_source_block           IV
_cod_database_code               2020976
_cod_database_fobs_code          2020976
_shelx_estimated_absorpt_t_min   0.964
_shelx_estimated_absorpt_t_max   0.983
_shelx_hkl_checksum              68511
_shelx_res_checksum              45332