N-heterocyclic carbene adducts of the heavier group 15 tribromides. Normal to abnormal isomerism and bromide ion abstraction.
Waters, Jordan; Chen, Qien; Everitt, Thomas; Goicoechea, Jose M.; Dalton Trans.  (2017) –; doi:10.1039/C7DT02431B

data_7043815
_publ_section_title
;
 N-heterocyclic carbene adducts of the heavier group 15 tribromides.
 Normal to abnormal isomerism and bromide ion abstraction.
;
_journal_name_full               'Dalton Trans.'
_journal_paper_doi               10.1039/C7DT02431B
_journal_year                    2017
_chemical_formula_moiety         'C54 H72 Br3 N4 Sb, 0.5(C4 H8 O)'
_chemical_formula_sum            'C56 H76 Br3 N4 O0.5 Sb'
_chemical_formula_weight         1174.68
_chemical_name_systematic
;
 [(aIPr)2SbBr2]Br*0.5THF
;
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2013
_audit_update_record
;
2017-07-04 deposited with the CCDC.
2017-07-21 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 98.6100(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   14.8865(2)
_cell_length_b                   18.9920(2)
_cell_length_c                   20.8333(2)
_cell_measurement_reflns_used    43158
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      76.3330
_cell_measurement_theta_min      3.7320
_cell_volume                     5823.70(12)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35g (release 09-12-2014 CrysAlis171 .NET)
(compiled Dec  9 2014,15:38:47)
;
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35g (release 09-12-2014 CrysAlis171 .NET)
(compiled Dec  9 2014,15:38:47)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35g (release 09-12-2014 CrysAlis171 .NET)
(compiled Dec  9 2014,15:38:47)
;
_computing_molecular_graphics    'WinGX (Farrugia, 2005)'
_computing_publication_material  'XCIF (Sheldrick, 2001)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 10.4102
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'SuperNova (Cu) X-ray Source'
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0359
_diffrn_reflns_av_unetI/netI     0.0190
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            79376
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         76.380
_diffrn_reflns_theta_min         3.419
_exptl_absorpt_coefficient_mu    6.445
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.77450
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35g (release 09-12-2014 CrysAlis171 .NET)
(compiled Dec  9 2014,15:38:47)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.340
_exptl_crystal_description       block
_exptl_crystal_F_000             2400
_exptl_crystal_size_max          0.260
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.120
_refine_diff_density_max         1.754
_refine_diff_density_min         -1.177
_refine_diff_density_rms         0.082
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     620
_refine_ls_number_reflns         12155
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0408
_refine_ls_R_factor_gt           0.0391
_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^)+(0.0569P)^2^+8.1368P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1028
_refine_ls_wR_factor_ref         0.1049
_reflns_Friedel_coverage         0.000
_reflns_number_gt                11696
_reflns_number_total             12155
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7dt02431b2.cif
_cod_data_source_block           9
_cod_original_formula_sum        'C56 H76 Br3 N4 O0.50 Sb'
_cod_database_code               7043815
_shelx_estimated_absorpt_t_min   0.285
_shelx_estimated_absorpt_t_max   0.512
_shelxl_version_number           2013-4
_shelx_res_checksum              94963