Structural and computational understanding of weak interactions in “bridge-flipped” isomeric tetrafluoro-bis-benzylideneanilines
Dhingra, Shallu; Barman, Dibya Jyoti; Yadav, Hare Ram; Eyyathiyil, Jusaina; Bhowmik, Prasanta; Kaur, Parmeet; Adhikari, Debashis; Roy Choudhury, Angshuman; CrystEngComm 20 (2018) 716–; doi:10.1039/C7CE01872J

data_7229790
_publ_section_title
;
 Structural and computational understanding of weak interactions in
 &#x201C;bridge-flipped&#x201D; isomeric
 tetrafluoro-bis-benzylideneanilines
;
_journal_issue                   6
_journal_name_full               CrystEngComm
_journal_page_first              716
_journal_paper_doi               10.1039/C7CE01872J
_journal_volume                  20
_journal_year                    2018
_chemical_formula_moiety         'C20 H14 F2 N2'
_chemical_formula_sum            'C20 H14 F2 N2'
_chemical_formula_weight         318.32
_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'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2017-07-04
_audit_creation_method
;
Olex2 1.2
(compiled 2017.03.28 svn.r3405 for OlexSys, GUI svn.r5337)
;
_audit_update_record
;
2017-07-17 deposited with the CCDC.
2017-12-26 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 107.46(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   5.775(4)
_cell_length_b                   20.795(7)
_cell_length_c                   6.653(3)
_cell_measurement_reflns_used    1905
_cell_measurement_temperature    100.0
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3.2
_cell_volume                     762.2(7)
_computing_cell_refinement
;
CrystalClear-SM Expert 2.0 r15 (Rigaku, 2011)
;
_computing_data_collection
;
CrystalClear-SM Expert 2.0 r15 (Rigaku, 2011)
;
_computing_data_reduction
;
CrystalClear-SM Expert 2.0 r15 (Rigaku, 2011)
;
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100.0
_diffrn_detector                 CCD
_diffrn_detector_area_resol_mean 13.6612
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_details
;
scan:
    Number of images: 629
               Slice: -69.0000 - 119.7000
         Image width: 0.3000
            Exp time: 15.0000
       Rotation axis: Omega
               Omega: 0.0000
                 Chi: 54.0000
                 Phi: 240.0000
                 XTD: 49.8600
              2theta: 29.8900
scan:
    Number of images: 629
               Slice: -69.0000 - 119.7000
         Image width: 0.3000
            Exp time: 15.0000
       Rotation axis: Omega
               Omega: 0.0000
                 Chi: 54.0000
                 Phi: 120.0000
                 XTD: 49.8600
              2theta: 29.8900
;
_diffrn_measurement_device
;
XtaLABmini: Fixed Chi 2 circle
;
_diffrn_measurement_device_type  'XtaLAB Mini (ROW)'
_diffrn_measurement_method       '\w scans'
_diffrn_measurement_specimen_support 'Cryo loop'
_diffrn_orient_matrix_type       d*Trek
_diffrn_orient_matrix_UB_11      -0.032681
_diffrn_orient_matrix_UB_12      -0.046834
_diffrn_orient_matrix_UB_13      0.172311
_diffrn_orient_matrix_UB_21      0.004268
_diffrn_orient_matrix_UB_22      0.046010
_diffrn_orient_matrix_UB_23      0.013315
_diffrn_orient_matrix_UB_31      -0.155756
_diffrn_orient_matrix_UB_32      0.007954
_diffrn_orient_matrix_UB_33      0.022437
_diffrn_radiation_monochromator  'Graphite Monochromator'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0638
_diffrn_reflns_av_unetI/netI     0.0938
_diffrn_reflns_Laue_measured_fraction_full 0.990
_diffrn_reflns_Laue_measured_fraction_max 0.990
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            5422
_diffrn_reflns_point_group_measured_fraction_full 0.990
_diffrn_reflns_point_group_measured_fraction_max 0.990
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         27.496
_diffrn_reflns_theta_min         3.356
_diffrn_source                   'Sealed Tube'
_diffrn_source_current           12.0
_diffrn_source_power             0.6
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.100
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.637
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Blessing 1995'
_exptl_crystal_colour            'clear light yellow'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.396
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             332
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.290
_refine_diff_density_min         -0.298
_refine_diff_density_rms         0.071
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.902
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     109
_refine_ls_number_reflns         1739
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.902
_refine_ls_R_factor_all          0.0879
_refine_ls_R_factor_gt           0.0441
_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^)+(0.0374P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0907
_refine_ls_wR_factor_ref         0.1160
_reflns_Friedel_coverage         0.000
_reflns_number_gt                951
_reflns_number_total             1739
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7ce01872j2.cif
_cod_data_source_block           2
_cod_depositor_comments
'Adding full bibliography for 7229788--7229798.cif.'
_cod_original_cell_volume        762.2(6)
_cod_database_code               7229790
_shelx_shelxl_version_number     2014/7
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C9(H9), C1(H1), C7(H7), C4(H4), C10(H10), C5(H5), C6(H6)
;
_olex2_exptl_crystal_mounting_method 'Cryo loop'
_olex2_submission_special_instructions 'No special instructions were received'