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_7229791
_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         320.33
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2016-12-26
_audit_creation_method
;
Olex2 1.2
(compiled 2016.11.30 svn.r3356 for OlexSys, GUI svn.r5269)
;
_audit_update_record
;
2017-07-17 deposited with the CCDC.
2017-12-26 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 104.659(8)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   6.9111(5)
_cell_length_b                   11.5037(9)
_cell_length_c                   10.0653(7)
_cell_measurement_reflns_used    2262
_cell_measurement_temperature    100.0
_cell_measurement_theta_max      32.9320
_cell_measurement_theta_min      2.7130
_cell_volume                     774.18(10)
_computing_cell_refinement       'CrysAlisPro 1.171.39.7f (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.39.7f (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.39.7f (Rigaku OD, 2015)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'XT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100.0
_diffrn_detector                 'CCD plate'
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.9189
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
  1  \w    -69.00 119.70   0.30   10.00    --   29.89  54.00 120.00  629
  2  \w    -69.00  90.90   0.30   10.00    --   29.89  54.00   0.00  533
;
_diffrn_measurement_device
;
XtaLABmini: Fixed Chi 2 circle
;
_diffrn_measurement_device_type  'XtaLAB Mini (ROW)'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      -0.0909897000
_diffrn_orient_matrix_UB_12      0.0004620000
_diffrn_orient_matrix_UB_13      -0.0521947000
_diffrn_orient_matrix_UB_21      -0.0543377000
_diffrn_orient_matrix_UB_22      0.0042044000
_diffrn_orient_matrix_UB_23      0.0507707000
_diffrn_orient_matrix_UB_31      0.0042450000
_diffrn_orient_matrix_UB_32      0.0615396000
_diffrn_orient_matrix_UB_33      -0.0030585000
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0768
_diffrn_reflns_av_unetI/netI     0.0797
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.919
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            6483
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.919
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         32.935
_diffrn_reflns_theta_min         2.741
_diffrn_source                   'fine-focus sealed X-ray tube'
_diffrn_source_type              'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.098
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.24916
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.7f (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_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    1.374
_exptl_crystal_description       block
_exptl_crystal_F_000             332
_exptl_crystal_size_max          0.27
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.728
_refine_diff_density_min         -0.570
_refine_diff_density_rms         0.108
_refine_ls_extinction_coef       0.010(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.020
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     110
_refine_ls_number_reflns         2674
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.020
_refine_ls_R_factor_all          0.1126
_refine_ls_R_factor_gt           0.0857
_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^)+(0.1618P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2189
_refine_ls_wR_factor_ref         0.2711
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1693
_reflns_number_total             2674
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7ce01872j2.cif
_cod_data_source_block           12
_cod_depositor_comments
'Adding full bibliography for 7229788--7229798.cif.'
_cod_database_code               7229791
_shelxl_version_number           2013-4
_chemical_oxdiff_formula         'C20 H14 N2 F2'
_reflns_odcompleteness_completeness 91.85
_reflns_odcompleteness_iscentric 1
_reflns_odcompleteness_theta     32.86
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C10(H10), C9(H9), C7(H7), C1(H1), C4(H4), C5(H5), C6(H6)
;
_shelx_res_checksum              99288
_olex2_submission_special_instructions 'No special instructions were received'
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
- Detector area scaling
;
_oxdiff_exptl_absorpt_empirical_full_max 3.251
_oxdiff_exptl_absorpt_empirical_full_min 0.440