2,2',4,4'-tetrabromodiphenylamine
Lautmann, Michael; Maris, Thierry; Wuest, James D.; Personal communication to COD  (2022) –; doi:

data_3500129
_publ_section_references
;
Dolomanov, O.V., Bourhis, L.J., Gildea, R.J, Howard, J.A.K. & Puschmann, H.
 (2009), J. Appl. Cryst. 42, 339-341.

Sheldrick, G.M. (2008). Acta Cryst. A64, 112-122.

;
_publ_section_title
;
 2,2',4,4'-tetrabromodiphenylamine
;
_journal_name_full               'Personal communication to COD'
_journal_year                    2022
_chemical_absolute_configuration .
_chemical_formula_moiety         'C12 H7 Br4 N'
_chemical_formula_sum            'C12 H7 Br4 N'
_chemical_formula_weight         484.83
_chemical_name_common            2,2',4,4'-tetrabromodiphenylamine
_chemical_name_systematic
;
Benzenamine, 2,4-dibromo-N-(2,4-dibromophenyl)-
;
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2022-10-04
_audit_creation_method
;
Olex2 1.5
(compiled 2022.04.07 svn.rca3783a0 for OlexSys, GUI svn.r6498)
;
_cell_angle_alpha                90
_cell_angle_beta                 105.352(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   9.8662(7)
_cell_length_b                   3.9711(3)
_cell_length_c                   17.3372(12)
_cell_measurement_reflns_used    6850
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      68.821
_cell_measurement_theta_min      2.643
_cell_volume                     655.03(8)
_computing_cell_refinement       'SAINT v7.06A (Bruker, 2003)'
_computing_data_collection       'SMART (Bruker, 2003)'
_computing_data_reduction        'SAINT v7.06A (Bruker, 2003)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL  (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      200.15
_diffrn_detector_area_resol_mean 5.5
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0461
_diffrn_reflns_av_unetI/netI     0.0073
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.993
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            1680
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         68.811
_diffrn_reflns_theta_min         2.643
_diffrn_source_current           25.0
_diffrn_source_power             1.0
_diffrn_source_voltage           40.0
_exptl_absorpt_coefficient_mu    14.795
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.420775
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2004/1 (Bruker,2004) was used for absorption correction.
R(int) was 0.1421 before and 0.0461 after correction.
The Ratio of minimum to maximum transmission is 0.4208.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    2.458
_exptl_crystal_density_meas      .
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             452
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.012
_geom_special_details
;
 All esds (except the esd in the dihedral angle between two l.s. planes)
 are estimated using the full covariance matrix.  The cell esds are taken
 into account individually in the estimation of esds in distances, angles
 and torsion angles; correlations between esds in cell parameters are only
 used when they are defined by crystal symmetry.  An approximate (isotropic)
 treatment of cell esds is used for estimating esds involving l.s. planes.
;
_refine_diff_density_max         0.668
_refine_diff_density_min         -0.568
_refine_diff_density_rms         0.152
_refine_ls_abs_structure_details
;
No quotients, so Flack parameter determined by classical intensity fit
;
_refine_ls_abs_structure_Flack   0.12(5)
_refine_ls_extinction_coef       0.0044(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2019/2 (Sheldrick 2019)'
_refine_ls_goodness_of_fit_ref   1.090
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     156
_refine_ls_number_reflns         1680
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.089
_refine_ls_R_factor_all          0.0354
_refine_ls_R_factor_gt           0.0353
_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^)+(0.0825P)^2^+0.5256P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0996
_refine_ls_wR_factor_ref         0.0997
_refine_special_details
;
 Refined as a 2-component twin.

1. Twinned data refinement
 Scales: 0.646(3)
 0.354(3)
2. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All N(H) groups
3.a Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C6(H6), N7(H7), C9(H9), C10(H10), C12(H12)
;
_reflns_Friedel_coverage         0.000
_reflns_Friedel_fraction_full    0.000
_reflns_Friedel_fraction_max     0.000
_reflns_number_gt                1677
_reflns_number_total             1680
_reflns_special_details
;
 _reflns_Friedel_fraction is defined as the number of unique
 Friedel pairs measured divided by the number that would be
 possible theoretically, ignoring centric projections and
 systematic absences. Completness statistics refer to single and
 composite reflections containing twin component 1 only.
;
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jiw987.cif
_cod_data_source_block           jiw987
_cod_database_code               3500129
_cod_database_fobs_code 3500129