Investigation of noncovalent interactions in organofluorine compounds with C–F bonds in different electronic environments
Das, Prantika; Bhandary, Subhrajyoti; Mathew, Dona; Dutta, Arnab; Dhabhai, Kanu Priya; Seth, Saikat Kumar; Chopra, Deepak; CrystEngComm 28 (2026) 1494–1507; doi:10.1039/D5CE00838G

data_7251497
_publ_section_title
;
 Investigation of noncovalent interactions in organofluorine compounds
 with C--F bonds in different electronic environments
;
_journal_issue                   9
_journal_name_full               CrystEngComm
_journal_page_first              1494
_journal_page_last               1507
_journal_paper_doi               10.1039/D5CE00838G
_journal_volume                  28
_journal_year                    2026
_chemical_formula_moiety         '2(C10 H11 F2 N O)'
_chemical_formula_sum            'C20 H22 F4 N2 O2'
_chemical_formula_weight         398.39
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2025-08-24
_audit_creation_method
;
Olex2 1.5
(compiled 2024.02.16 svn.r378c4104 for OlexSys, GUI svn.r6928)
;
_audit_update_record
;
2025-08-28 deposited with the CCDC.	2025-12-16 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 102.991(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.5100(11)
_cell_length_b                   11.0959(13)
_cell_length_c                   19.198(2)
_cell_measurement_reflns_used    6961
_cell_measurement_temperature    102(2)
_cell_measurement_theta_max      29.86
_cell_measurement_theta_min      2.85
_cell_volume                     1974.0(4)
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_diffrn_ambient_temperature      102.40
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker SMART APEX2 area detector'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0566
_diffrn_reflns_av_unetI/netI     0.0584
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            22866
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.130
_diffrn_reflns_theta_min         2.177
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_exptl_absorpt_coefficient_mu    0.112
_exptl_absorpt_correction_T_max  0.7460
_exptl_absorpt_correction_T_min  0.6441
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2014/2 (Bruker,2014/2) was used for absorption correction.
wR2(int) was 0.1445 before and 0.0612 after correction.
The Ratio of minimum to maximum transmission is 0.8634.
The \l/2 correction factor is 0.00150.
;
_exptl_crystal_colour            'clear light colourless'
_exptl_crystal_density_diffrn    1.341
_exptl_crystal_description       plate
_exptl_crystal_F_000             832
_exptl_crystal_size_max          0.148
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.056
_refine_diff_density_max         0.329
_refine_diff_density_min         -0.246
_refine_diff_density_rms         0.053
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     257
_refine_ls_number_reflns         5283
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0917
_refine_ls_R_factor_gt           0.0477
_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^)+(0.0441P)^2^+0.5559P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0998
_refine_ls_wR_factor_ref         0.1156
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3423
_reflns_number_total             5283
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d5ce00838g2.cif
_cod_data_source_block           3_Form_I
_cod_depositor_comments
'Adding full bibliography for 7251494--7251497.cif.'
_cod_database_code               7251497
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.994
_shelx_estimated_absorpt_t_min   0.984
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Aromatic/amide H refined with riding coordinates:
 N1(H1), N2(H2A), C2(H2), C3(H3), C6(H6), C5(H5), C16(H16), C15(H15), C12(H12),
  C13(H13)
2.b Idealised Me refined as rotating group:
 C10(H10A,H10B,H10C), C9(H9A,H9B,H9C), C20(H20A,H20B,H20C), C19(H19A,H19B,H19C)
;
_shelx_res_checksum              98226
_olex2_submission_special_instructions 'No special instructions were received'