5-Fluorouracil–1,4-dioxane (4/1)
Hulme, Ashley T.; Tocher, Derek A.; Acta Crystallographica Section E 60 (2004) o1781–o1782; doi:10.1107/S1600536804022251

data_2204297
_publ_section_title
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 5-Fluorouracil--1,4-dioxane (4/1)
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_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1781
_journal_page_last               o1782
_journal_paper_doi               10.1107/S1600536804022251
_journal_volume                  60
_journal_year                    2004
_chemical_formula_moiety         'C4 H8 O2, 4C4 H3 F N2 O2'
_chemical_formula_sum            'C20 H20 F4 N8 O10'
_chemical_formula_weight         608.44
_chemical_name_systematic
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5-Fluorouracil 1,4-dioxane (4/1)
;
_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   'found from delta F'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                98.128(3)
_cell_angle_beta                 96.913(3)
_cell_angle_gamma                99.785(3)
_cell_formula_units_Z            1
_cell_length_a                   7.0847(11)
_cell_length_b                   8.4733(13)
_cell_length_c                   10.2291(15)
_cell_measurement_reflns_used    1082
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      26.6805
_cell_measurement_theta_min      2.4735
_cell_volume                     592.45(16)
_computing_cell_refinement       'SAINT (Bruker, 1998)'
_computing_data_collection       'SMART (Bruker, 1998)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.927
_diffrn_measurement_device_type  'Bruker SMART APEX diffractometer'
_diffrn_measurement_method       '\w 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  0.0291
_diffrn_reflns_av_sigmaI/netI    0.0499
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            5320
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         28.32
_diffrn_reflns_theta_min         2.03
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.157
_exptl_absorpt_correction_T_max  0.9953
_exptl_absorpt_correction_T_min  0.9471
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.705
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             312
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.326
_refine_diff_density_min         -0.325
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.080
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     230
_refine_ls_number_reflns         2741
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.080
_refine_ls_R_factor_all          0.0723
_refine_ls_R_factor_gt           0.0521
_refine_ls_shift/su_max          <0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0457P)^2^+0.1655P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1053
_refine_ls_wR_factor_ref         0.1142
_reflns_number_gt                2131
_reflns_number_total             2741
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ci6440.cif
_cod_data_source_block           I
_cod_depositor_comments
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The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_database_code               2204297
_cod_database_fobs_code          2204297