Crystal structure analyses facilitate understanding of synthesis protocols in the preparation of 6,6′-dibromo-substituted BINOL compounds
Agnes, Marco; Sorrenti, Alessandro; Pasini, Dario; Wurst, Klaus; Amabilino, David B.; CrystEngComm 16 (2014) 10131–; doi:10.1039/C4CE01160K

data_7218095
_publ_section_title
;
 Crystal structure analyses facilitate understanding of synthesis
 protocols in the preparation of 6,6&#x2032;-dibromo-substituted BINOL
 compounds
;
_journal_issue                   43
_journal_name_full               CrystEngComm
_journal_page_first              10131
_journal_paper_doi               10.1039/C4CE01160K
_journal_volume                  16
_journal_year                    2014
_chemical_formula_sum            'C28 H28 Br2 O6'
_chemical_formula_weight         620.32
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 99.274(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.0274(2)
_cell_length_b                   20.4427(4)
_cell_length_c                   14.5383(3)
_cell_measurement_reflns_used    26096
_cell_measurement_temperature    233(2)
_cell_measurement_theta_max      25.3
_cell_measurement_theta_min      1.0
_cell_volume                     2647.89(10)
_computing_data_collection       COLLECT
_computing_data_reduction        'DENZO and SCALEPACK'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      233(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       'phi- and omega-scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0342
_diffrn_reflns_av_sigmaI/netI    0.0442
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            17115
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.73
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    3.102
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.556
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1256
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.784
_refine_diff_density_min         -0.733
_refine_diff_density_rms         0.058
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.022(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     649
_refine_ls_number_reflns         9297
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0560
_refine_ls_R_factor_gt           0.0420
_refine_ls_shift/su_max          0.022
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0466P)^2^+2.0519P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0962
_refine_ls_wR_factor_ref         0.1021
_reflns_number_gt                7863
_reflns_number_total             9297
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ce01160k2.cif
_cod_data_source_block           (R)-3
_cod_depositor_comments
'Adding full bibliography for 7218094--7218098.cif.'
_cod_original_sg_symbol_H-M      P21
_cod_database_code               7218095