Halogen Interactions in 2,4,5-Tribromoimidazolium Salts
Froschauer, Carmen; Kahlenberg, Volker; Laus, Gerhard; Schottenberger, Herwig; Crystals 2 (2012) 1017–1033; doi:10.3390/cryst2031017

data_1508473
_publ_section_title
;
 Halogen Interactions in 2,4,5-Tribromoimidazolium Salts
;
_journal_issue                   3
_journal_name_full               Crystals
_journal_page_first              1017
_journal_page_last               1033
_journal_paper_doi               10.3390/cryst2031017
_journal_volume                  2
_journal_year                    2012
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C6 H3 Br3 N2'
_chemical_formula_sum            'C6 H3 Br3 N2'
_chemical_formula_weight         342.83
_space_group_IT_number           29
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      29
_symmetry_space_group_name_Hall  'P 2c -2b'
_symmetry_space_group_name_H-M   'P b c 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4
_audit_creation_date             2010-11-29T14:11:28-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.1109(2)
_cell_length_b                   7.8014(2)
_cell_length_c                   15.6397(5)
_cell_measurement_reflns_used    3950
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      28.4313
_cell_measurement_theta_min      2.8587
_cell_volume                     867.61(4)
_computing_cell_refinement
;
        CrysAlisPro, Oxford Diffraction Ltd.,
        Version 1.171.34.9 (release 08-12-2009 CrysAlis171 .NET)
        (compiled Dec  8 2009,17:31:18)
;
_computing_data_collection
;
        CrysAlisPro, Oxford Diffraction Ltd.,
        Version 1.171.34.9 (release 08-12-2009 CrysAlis171 .NET)
        (compiled Dec  8 2009,17:31:18)
;
_computing_data_reduction
;
        CrysAlisPro, Oxford Diffraction Ltd.,
        Version 1.171.34.9 (release 08-12-2009 CrysAlis171 .NET)
        (compiled Dec  8 2009,17:31:18)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR2002 (Burla et al., 2003)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 10.3575
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Xcalibur, Ruby, Gemini ultra'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_UB_11      -0.0185405
_diffrn_orient_matrix_UB_12      -0.0707832
_diffrn_orient_matrix_UB_13      -0.0272083
_diffrn_orient_matrix_UB_21      0.0000587
_diffrn_orient_matrix_UB_22      0.0555465
_diffrn_orient_matrix_UB_23      -0.0358941
_diffrn_orient_matrix_UB_31      0.0980106
_diffrn_orient_matrix_UB_32      -0.0133886
_diffrn_orient_matrix_UB_33      -0.0050958
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0306
_diffrn_reflns_av_unetI/netI     0.0249
_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       15
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            4789
_diffrn_reflns_theta_full        25.34
_diffrn_reflns_theta_max         25.34
_diffrn_reflns_theta_min         2.86
_exptl_absorpt_coefficient_mu    13.882
_exptl_absorpt_correction_T_max  1
_exptl_absorpt_correction_T_min  0.47085
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
        CrysAlisPro, Oxford Diffraction Ltd.,
        Version 1.171.34.9 (release 08-12-2009 CrysAlis171 .NET)
        (compiled Dec  8 2009,17:31:18)
        Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.625
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             632
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.532
_refine_diff_density_min         -0.478
_refine_diff_density_rms         0.099
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.03(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.091
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     104
_refine_ls_number_reflns         1276
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.091
_refine_ls_R_factor_all          0.0205
_refine_ls_R_factor_gt           0.0191
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0209P)^2^+0.3489P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0421
_refine_ls_wR_factor_ref         0.0427
_reflns_number_gt                1243
_reflns_number_total             1276
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file
C6H3Br3N2_Pbc21_CCDC881953_crystals-02-01017-s001_DC208.cif
_cod_data_source_block           cf250_1_chateigner1508473
_cod_database_code               1508473