The whole is greater than the sum of its parts: binary and ternary 5-fluorouracil co-crystals with enhanced selectivity towards metastatic cancer cells.
Grabowski, Szymon; Wojdyła-Parat, Julianna; Tyszka-Czochara, Małgorzata; Kozieł, Marcin; Chmylak, Michał; Lalik, Sebastian; Gryl, Marlena; Chemical communications (Cambridge, England) 61 (2025) 16770–16773; doi:10.1039/d5cc01707f

data_7134949
_publ_section_title
;
 The whole is greater than the sum of its parts: binary and ternary
 5-fluorouracil co-crystals with enhanced selectivity towards metastatic
 cancer cells.
;
_journal_issue                   86
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              16770
_journal_page_last               16773
_journal_paper_doi               10.1039/d5cc01707f
_journal_volume                  61
_journal_year                    2025
_chemical_formula_moiety         'C6 H7 N3 O, 2(C4 H3 F N2 O2)'
_chemical_formula_sum            'C14 H13 F2 N7 O5'
_chemical_formula_weight         397.31
_chemical_name_common            '5-fluorouracil isoniazid'
_chemical_name_systematic
'2,4-dihydroxy-5-fluoropyrimidine 4-pyridinecarboxylic acid hydrazide'
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2018/3
_audit_update_record
;
2024-12-12 deposited with the CCDC.	2025-08-15 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   38.4123(10)
_cell_length_b                   3.67580(10)
_cell_length_c                   23.4287(7)
_cell_measurement_reflns_used    15681
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      79.0960
_cell_measurement_theta_min      2.9530
_cell_volume                     3308.04(16)
_computing_cell_refinement       'CrysAlisPro 1.171.40.37a (Rigaku OD, 2019)'
_computing_data_collection       'CrysAlisPro 1.171.40.37a (Rigaku OD, 2019)'
_computing_data_reduction        'CrysAlisPro 1.171.40.37a (Rigaku OD, 2019)'
_computing_molecular_graphics    'WinGX, (Farrugia, 2012)'
_computing_publication_material  'Mercury, (Macrae, 2020)'
_computing_structure_refinement  'SHELXL-2018/3 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2014/4 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'Hybrid Pixel Array Detector'
_diffrn_detector_area_resol_mean 10.0000
_diffrn_detector_type            HyPix
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'XtaLAB Synergy, Dualflex, HyPix'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0369
_diffrn_reflns_av_unetI/netI     0.0274
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       49
_diffrn_reflns_limit_h_min       -49
_diffrn_reflns_limit_k_max       3
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            37146
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.987
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         79.895
_diffrn_reflns_theta_min         2.300
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'PhotonJet (Cu) X-ray Source'
_exptl_absorpt_coefficient_mu    1.208
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.70079
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.41.122a (Rigaku Oxford Diffraction, 2021)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.596
_exptl_crystal_description       needle
_exptl_crystal_F_000             1632
_exptl_crystal_size_max          0.120
_exptl_crystal_size_mid          0.030
_exptl_crystal_size_min          0.010
_refine_diff_density_max         0.155
_refine_diff_density_min         -0.158
_refine_diff_density_rms         0.034
_refine_ls_abs_structure_details
;
 Flack x determined using 2971 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.18(6)
_refine_ls_extinction_coef       0.00040(9)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     548
_refine_ls_number_reflns         7142
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0354
_refine_ls_R_factor_gt           0.0327
_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^)+(0.0419P)^2^+0.5137P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0833
_refine_ls_wR_factor_ref         0.0850
_reflns_Friedel_coverage         0.937
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.979
_reflns_number_gt                6673
_reflns_number_total             7142
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5cc01707f2.cif
_cod_data_source_block           II
_cod_depositor_comments
'Adding full bibliography for 7134949--7134950.cif.'
_cod_database_code               7134949
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_min   0.869
_shelx_estimated_absorpt_t_max   0.988
_oxdiff_exptl_absorpt_empirical_full_min 0.689
_oxdiff_exptl_absorpt_empirical_full_max 1.443
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_shelx_res_checksum              84530
_shelx_hkl_checksum              33899