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_7251252
_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 H21 Cl N4 O5'
_chemical_formula_weight         420.85
_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                70.718(5)
_cell_angle_beta                 78.374(5)
_cell_angle_gamma                80.575(4)
_cell_formula_units_Z            2
_cell_length_a                   8.6158(5)
_cell_length_b                   10.2919(5)
_cell_length_c                   11.9567(7)
_cell_measurement_reflns_used    3657
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      69.8930
_cell_measurement_theta_min      5.0400
_cell_volume                     974.80(10)
_computing_structure_refinement  'SHELXL-2019/2 (Sheldrick, 2019)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.976
_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  0.0270
_diffrn_reflns_av_unetI/netI     0.0286
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.976
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            6137
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.976
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         69.755
_diffrn_reflns_theta_min         3.967
_exptl_absorpt_coefficient_mu    2.087
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.53345
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.40.45a (Rigaku Oxford Diffraction, 2019)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.434
_exptl_crystal_description       plate
_exptl_crystal_F_000             440
_exptl_crystal_size_max          0.180
_exptl_crystal_size_mid          0.040
_exptl_crystal_size_min          0.030
_refine_diff_density_max         0.329
_refine_diff_density_min         -0.334
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     290
_refine_ls_number_reflns         3603
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0412
_refine_ls_R_factor_gt           0.0396
_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^)+(0.0688P)^2^+0.3700P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1100
_refine_ls_wR_factor_ref         0.1116
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3430
_reflns_number_total             3603
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5ce00966a2.cif
_cod_data_source_block           shelx_CCDC2
_cod_database_code               7251252
_shelx_shelxl_version_number     2019/2
_shelx_estimated_absorpt_t_min   0.705
_shelx_estimated_absorpt_t_max   0.940
_shelx_res_checksum              1002