One dimensional halogen bond design: Br⋯N versus I⋯N with fluoroarenes
Peloquin, Andrew J.; McMillen, Colin D.; Pennington, William T.; CrystEngComm 23 (2021) 6098–6106; doi:10.1039/D1CE00864A

data_7243309
_publ_section_title
;
 One dimensional halogen bond design: Br&#x22EF;N versus I&#x22EF;N with
 fluoroarenes
;
_journal_issue                   35
_journal_name_full               CrystEngComm
_journal_page_first              6098
_journal_page_last               6106
_journal_paper_doi               10.1039/D1CE00864A
_journal_volume                  23
_journal_year                    2021
_chemical_formula_moiety         'Br2 C6 F4, C12 H12 N2'
_chemical_formula_sum            'C18 H12 Br2 F4 N2'
_chemical_formula_weight         492.110
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_Int_Tables_number      2
_audit_creation_date             2021-05-25
_audit_creation_method
;
Olex2 1.3
(compiled 2020.11.12 svn.r5f609507 for OlexSys, GUI svn.r6272)
;
_audit_update_record
;
2021-06-27 deposited with the CCDC.	2021-08-02 downloaded from the CCDC.
;
_cell_angle_alpha                82.848(3)
_cell_angle_beta                 82.965(3)
_cell_angle_gamma                75.554(3)
_cell_formula_units_Z            1
_cell_length_a                   6.8796(6)
_cell_length_b                   7.4209(6)
_cell_length_c                   9.2086(8)
_cell_measurement_reflns_used    8219
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.59
_cell_measurement_theta_min      2.85
_cell_volume                     449.67(7)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX3'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.3 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100.0
_diffrn_measured_fraction_theta_full 0.9982
_diffrn_measured_fraction_theta_max 0.9938
_diffrn_measurement_device_type  'Bruker D8 Venture Photon 100'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0305
_diffrn_reflns_av_unetI/netI     0.0214
_diffrn_reflns_Laue_measured_fraction_full 0.9982
_diffrn_reflns_Laue_measured_fraction_max 0.9938
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            10929
_diffrn_reflns_point_group_measured_fraction_full 0.9982
_diffrn_reflns_point_group_measured_fraction_max 0.9938
_diffrn_reflns_theta_full        25.2417
_diffrn_reflns_theta_max         27.59
_diffrn_reflns_theta_min         2.85
_diffrn_source                   'Incoatec I\mS'
_diffrn_source_current           1.0
_diffrn_source_power             0.05
_diffrn_source_voltage           50.0
_exptl_absorpt_coefficient_mu    4.549
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6445
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2014/5 (Bruker,2014/5) was used for absorption correction.
wR2(int) was 0.0595 before and 0.0436 after correction.
The Ratio of minimum to maximum transmission is 0.8644.
The \l/2 correction factor is Not present.
;
_exptl_crystal_density_diffrn    1.817
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             239.726
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.12
_exptl_transmission_factor_max   'not measured'
_exptl_transmission_factor_min   'not measured'
_refine_diff_density_max         1.0561
_refine_diff_density_min         -0.4087
_refine_diff_density_rms         0.1124
_refine_ls_d_res_high            0.7672
_refine_ls_d_res_low             7.1519
_refine_ls_goodness_of_fit_ref   1.0540
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_constraints    10
_refine_ls_number_parameters     119
_refine_ls_number_reflns         2068
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.0540
_refine_ls_R_factor_all          0.0294
_refine_ls_R_factor_gt           0.0258
_refine_ls_shift/su_max          0.0001
_refine_ls_shift/su_mean         0.0000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0295P)^2^+1.1283P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0682
_refine_ls_wR_factor_ref         0.0720
_reflns_Friedel_coverage         0.0
_reflns_limit_h_max              8
_reflns_limit_h_min              -8
_reflns_limit_k_max              9
_reflns_limit_k_min              -9
_reflns_limit_l_max              12
_reflns_limit_l_min              0
_reflns_number_gt                1917
_reflns_number_total             2068
_reflns_threshold_expression     I>=2u(I)
_cod_data_source_file            d1ce00864a2.cif
_cod_data_source_block           Br2F4bz_44Me222bipy
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_crystal_density_meas' value 'not measured' was
changed to '?' -- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 

 Adding full bibliography for 7243307--7243335.cif.
;
_cod_database_code               7243309
_olex2_refinement_description
;
1.a Aromatic/amide H refined with riding coordinates:
 C4(H4), C5(H5), C7(H7)
1.b Idealised Me refined as rotating group:
 C9(H9a,H9b,H9c)
;
_olex2_submission_special_instructions 'No special instructions were received'