Synthesis, resolution, and absolute configuration of chiral 4,4'-bipyridines.
Mamane, Victor; Aubert, Emmanuel; Peluso, Paola; Cossu, Sergio; The Journal of organic chemistry 77 (2012) 2579–2583; doi:10.1021/jo300286z

data_4037601
_publ_section_title
;
 Synthesis, resolution, and absolute configuration of chiral
 4,4'-bipyridines.
;
_journal_issue                   6
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              2579
_journal_page_last               2583
_journal_paper_doi               10.1021/jo300286z
_journal_volume                  77
_journal_year                    2012
_chemical_formula_moiety         'C22 H14 Br2 N2'
_chemical_formula_sum            'C22 H14 Br2 N2'
_chemical_formula_weight         466.17
_chemical_name_systematic
;
'3,5'-Dibromo-5,3'-diphenyl-[4,4']bipyridinyl'
;
_space_group_IT_number           30
_space_group_name_Hall           'P 2 -2bc'
_space_group_name_H-M_alt        'P n c 2'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2 -2bc'
_symmetry_space_group_name_H-M   'P n c 2'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   7.7417(4)
_cell_length_b                   11.2941(6)
_cell_length_c                   10.3290(4)
_cell_measurement_reflns_used    4395
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      37.7704
_cell_measurement_theta_min      3.2819
_cell_volume                     903.12(8)
_computing_cell_refinement
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.34.44 (release 25-10-2010 CrysAlis171 .NET)
(compiled Oct 25 2010,18:11:34)
;
_computing_data_collection
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.34.44 (release 25-10-2010 CrysAlis171 .NET)
(compiled Oct 25 2010,18:11:34)
;
_computing_data_reduction
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.34.44 (release 25-10-2010 CrysAlis171 .NET)
(compiled Oct 25 2010,18:11:34)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR_92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      110(2)
_diffrn_detector_area_resol_mean 10.4508
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, Atlas'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'SuperNova (Mo) X-ray Source'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.7107
_diffrn_reflns_av_R_equivalents  0.0663
_diffrn_reflns_av_sigmaI/netI    0.1302
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            6477
_diffrn_reflns_theta_full        27.51
_diffrn_reflns_theta_max         27.51
_diffrn_reflns_theta_min         3.61
_exptl_absorpt_coefficient_mu    4.530
_exptl_absorpt_correction_T_max  0.781
_exptl_absorpt_correction_T_min  0.578
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.34.44 (release 25-10-2010 CrysAlis171 .NET)
(compiled Oct 25 2010,18:11:34)
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)
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.714
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             460
_exptl_crystal_size_max          0.1750
_exptl_crystal_size_mid          0.1106
_exptl_crystal_size_min          0.0638
_refine_diff_density_max         0.653
_refine_diff_density_min         -0.319
_refine_diff_density_rms         0.094
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.012(17)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.071
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     118
_refine_ls_number_reflns         2061
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.071
_refine_ls_R_factor_all          0.0426
_refine_ls_R_factor_gt           0.0372
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0493P)^2^+0.3976P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0905
_refine_ls_wR_factor_ref         0.0945
_reflns_number_gt                1896
_reflns_number_total             2061
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo300286z_si_005.cif
_cod_data_source_block           vm796f2
_cod_original_sg_symbol_Hall     'P 2 -2bc '
_cod_original_sg_symbol_H-M      '	P n c 2 '
_cod_database_code               4037601