Novel pyrimethamine salts with isomeric dihydroxybenzoic acids: crystallization and characterization
Kedra, Karolina; Dąbrowa, Kajetan; Gajek, Arkadiusz; CEBORSKA, MAGDALENA; CrystEngComm  (2025) –; doi:10.1039/D5CE00966A

data_7251250
_publ_section_title
;
 Novel pyrimethamine salts with isomeric dihydroxybenzoic acids:
 crystallization and characterization
;
_journal_name_full               CrystEngComm
_journal_paper_doi               10.1039/D5CE00966A
_journal_year                    2025
_chemical_formula_sum            'C19 H19 Cl N4 O4'
_chemical_formula_weight         402.83
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2019/2
_audit_update_record
;
2023-09-18 deposited with the CCDC.	2025-11-07 downloaded from the CCDC.
;
_cell_angle_alpha                99.521(5)
_cell_angle_beta                 91.777(5)
_cell_angle_gamma                107.572(5)
_cell_formula_units_Z            2
_cell_length_a                   7.4735(5)
_cell_length_b                   9.0284(5)
_cell_length_c                   14.9080(10)
_cell_measurement_reflns_used    3869
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      69.9810
_cell_measurement_theta_min      5.2240
_cell_volume                     942.24(11)
_computing_structure_refinement  'SHELXL-2019/2 (Sheldrick, 2019)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.977
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at home/near, Eos'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0226
_diffrn_reflns_av_unetI/netI     0.0288
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.977
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            5983
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.977
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         69.999
_diffrn_reflns_theta_min         3.017
_exptl_absorpt_coefficient_mu    2.095
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.73354
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.40.84a (Rigaku Oxford Diffraction, 2020)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.420
_exptl_crystal_description       plate
_exptl_crystal_F_000             420
_exptl_crystal_size_max          0.140
_exptl_crystal_size_mid          0.080
_exptl_crystal_size_min          0.020
_refine_diff_density_max         0.257
_refine_diff_density_min         -0.420
_refine_diff_density_rms         0.072
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     276
_refine_ls_number_reflns         3475
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0416
_refine_ls_R_factor_gt           0.0388
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0698P)^2^+0.2275P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1052
_refine_ls_wR_factor_ref         0.1081
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3239
_reflns_number_total             3475
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5ce00966a2.cif
_cod_data_source_block           shelx
_cod_database_code               7251250
_shelx_shelxl_version_number     2019/2
_shelx_estimated_absorpt_t_min   0.758
_shelx_estimated_absorpt_t_max   0.959
_shelx_res_checksum              87523