Properties and interactions ‒ melting point of tribromobenzene isomers
Bujak, Maciej; Podsiadło, Marcin; Katrusiak, Andrzej; Acta Crystallographica Section B 77 (2021) –; doi:10.1107/S2052520621006399

data_2108847
_publ_section_title
;
 Properties and interactions -- melting point of tribromobenzene isomers
;
_journal_coeditor_code           LO5092
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first
;
;
_journal_paper_doi               10.1107/S2052520621006399
_journal_volume                  77
_journal_year                    2021
_chemical_formula_moiety         'C6 H3 Br3'
_chemical_formula_sum            'C6 H3 Br3'
_chemical_formula_weight         314.78
_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'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 113.276(7)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   12.9832(8)
_cell_length_b                   8.3806(6)
_cell_length_c                   15.5159(10)
_cell_measurement_reflns_used    2431
_cell_measurement_temperature    270.0(1)
_cell_measurement_theta_max      23.15
_cell_measurement_theta_min      2.98
_cell_volume                     1550.8(2)
_computing_cell_refinement
'CrysAlisPro 1.171.39.46 (Rigaku Oxford Diffraction, 2018)'
_computing_data_collection
'CrysAlisPro 1.171.39.46 (Rigaku Oxford Diffraction, 2018)'
_computing_data_reduction
'CrysAlisPro 1.171.39.46 (Rigaku Oxford Diffraction, 2018)'
_computing_molecular_graphics    'Mercury (Macrae at al., 2020)'
_computing_publication_material  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      270.0(1)
_diffrn_detector_area_resol_mean 16.1544
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Xcalibur, Eos'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0862
_diffrn_reflns_av_unetI/netI     0.0579
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            21557
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.998
_diffrn_reflns_theta_min         2.858
_diffrn_source                   'fine-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    15.512
_exptl_absorpt_correction_T_max  0.172
_exptl_absorpt_correction_T_min  0.046
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.39.46 (Rigaku Oxford Diffraction, 2018)
Analytical numeric absorption correction using a multifaceted crystal
model based on expressions derived by R.C. Clark & J.S. Reid.
(Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    2.697
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       tabular
_exptl_crystal_F_000             1152
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.630
_refine_diff_density_min         -0.687
_refine_diff_density_rms         0.120
_refine_ls_extinction_coef       0.00081(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014)'
_refine_ls_goodness_of_fit_ref   0.976
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     164
_refine_ls_number_reflns         3041
_refine_ls_number_restraints     5
_refine_ls_restrained_S_all      0.977
_refine_ls_R_factor_all          0.0862
_refine_ls_R_factor_gt           0.0395
_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^)+(0.0237P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0668
_refine_ls_wR_factor_ref         0.0753
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1880
_reflns_number_total             3041
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            lo5092sup1.cif
_cod_data_source_block           123TBB_270K
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2108847
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.050
_shelx_estimated_absorpt_t_max   0.167
_shelx_res_checksum              11548
_shelx_hkl_checksum              726
_cod_database_fobs_code 2108847