Conformational and Optical Characteristics of Unidirectionally Twisted Binaphthyl-Bipyridyl Cyclic Dyads.
Takaishi, Kazuto; Suzuki, Jun; Yabe, Tatsuya; Asano, Hikaru; Nishikawa, Michihiro; Hashizume, Daisuke; Muranaka, Atsuya; Uchiyama, Masanobu; Yokoyama, Akihiro; Organic letters 17 (2015) 4098–4101; doi:10.1021/acs.orglett.5b02041

data_1555220
_publ_section_title
;
 Conformational and Optical Characteristics of Unidirectionally Twisted
 Binaphthyl-Bipyridyl Cyclic Dyads.
;
_journal_issue                   16
_journal_name_full               'Organic letters'
_journal_page_first              4098
_journal_page_last               4101
_journal_paper_doi               10.1021/acs.orglett.5b02041
_journal_volume                  17
_journal_year                    2015
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C34 H24 O2'
_chemical_formula_sum            'C34 H24 O2'
_chemical_formula_weight         464.53
_space_group_crystal_system      orthorhombic
_space_group_IT_number           18
_space_group_name_Hall           'P 2 2ab'
_space_group_name_H-M_alt        'P 21 21 2'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.1679(2)
_cell_length_b                   24.1852(5)
_cell_length_c                   9.1499(2)
_cell_measurement_reflns_used    13159
_cell_measurement_temperature    90
_cell_measurement_theta_max      30.028
_cell_measurement_theta_min      2.380
_cell_volume                     2471.37(9)
_computing_cell_refinement       HKL2000
_computing_data_collection       CrystalClear
_computing_data_reduction        HKL2000
_computing_molecular_graphics    SV
_computing_publication_material  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    SIR2004
_diffrn_ambient_temperature      90
_diffrn_detector_area_resol_mean 7.31
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Rigaku AFC-8 with Saturn70 CCD'
_diffrn_measurement_method       \w-scan
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0353
_diffrn_reflns_av_unetI/netI     0.0615
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -33
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            13126
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.028
_diffrn_reflns_theta_min         2.380
_diffrn_source                   'Fine-focus rotating anode'
_exptl_absorpt_coefficient_mu    0.076
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.248
_exptl_crystal_description       block
_exptl_crystal_F_000             976
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.165
_refine_diff_density_min         -0.224
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details
;
 Flack x determined using 2227 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.1(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.075
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     325
_refine_ls_number_reflns         7193
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.075
_refine_ls_R_factor_all          0.0599
_refine_ls_R_factor_gt           0.0461
_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^)+(0.0367P)^2^+0.0732P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0968
_refine_ls_wR_factor_ref         0.1038
_reflns_Friedel_coverage         0.777
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.992
_reflns_number_gt                5917
_reflns_number_total             7193
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ol5b02041_si_005.cif
_cod_data_source_block           22-P1
_cod_database_code               1555220
_shelx_estimated_absorpt_t_min   0.976
_shelx_estimated_absorpt_t_max   0.989
_shelxl_version_number           2014-3
_shelx_res_checksum              78493
_shelx_hkl_checksum              36438