Chiral Cyclohexyl-Fused Spirobiindanes: Practical Synthesis, Ligand Development, and Asymmetric Catalysis.
Zheng, Zhiyao; Cao, Yuxi; Chong, Qinglei; Han, Zhaobin; Ding, Jiaming; Luo, Chenguang; Wang, Zheng; Zhu, Dongsheng; Zhou, Qi-Lin; Ding, Kuiling; Journal of the American Chemical Society 140 (2018) 10374–10381; doi:10.1021/jacs.8b07125

data_4132892
_publ_section_title
;
 Chiral Cyclohexyl-Fused Spirobiindanes: Practical Synthesis, Ligand
 Development, and Asymmetric Catalysis.
;
_journal_issue                   32
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              10374
_journal_page_last               10381
_journal_paper_doi               10.1021/jacs.8b07125
_journal_volume                  140
_journal_year                    2018
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C24 H26 O5'
_chemical_formula_sum            'C24 H26 O5'
_chemical_formula_weight         394.45
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2015-04-27
_audit_creation_method
;
Olex2 1.2
(compiled 2015.01.26 svn.r3150 for OlexSys, GUI svn.r4998)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.3744(9)
_cell_length_b                   25.699(3)
_cell_length_c                   9.3187(9)
_cell_measurement_reflns_used    1979
_cell_measurement_temperature    130
_cell_measurement_theta_max      21.08
_cell_measurement_theta_min      2.325
_cell_volume                     2005.5(4)
_computing_cell_refinement       'SAINT v7.68A (Bruker, 2009)'
_computing_data_reduction        'SAINT v7.68A (Bruker, 2009)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      130
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0592
_diffrn_reflns_av_unetI/netI     0.0596
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       34
_diffrn_reflns_limit_k_min       -34
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            16839
_diffrn_reflns_point_group_measured_fraction_full 0.982
_diffrn_reflns_point_group_measured_fraction_max 0.970
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         28.323
_diffrn_reflns_theta_min         2.325
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.091
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_correction_T_min  0.6985
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2008/1 (Bruker,2008) was used for absorption correction.
wR2(int) was 0.0616 before and 0.0537 after correction.
The Ratio of minimum to maximum transmission is 0.9367.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            yellow
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.306
_exptl_crystal_description       block
_exptl_crystal_F_000             840
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.199
_refine_diff_density_min         -0.173
_refine_diff_density_rms         0.040
_refine_ls_abs_structure_details
;
 Flack x determined using 1205 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.0(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.012
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     266
_refine_ls_number_reflns         4854
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.012
_refine_ls_R_factor_all          0.0808
_refine_ls_R_factor_gt           0.0478
_refine_ls_shift/su_max          0.014
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0418P)^2^+0.1580P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0926
_refine_ls_wR_factor_ref         0.1057
_reflns_Friedel_coverage         0.831
_reflns_Friedel_fraction_full    0.961
_reflns_Friedel_fraction_max     0.937
_reflns_number_gt                3435
_reflns_number_total             4854
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b07125_si_007.cif
_cod_data_source_block           dm15326
_cod_database_code               4132892
_shelxl_version_number           2014-3
_shelx_estimated_absorpt_t_max   0.984
_shelx_estimated_absorpt_t_min   0.978
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C3(H3A,H3B), C4(H4A,H4B), C5(H5A,H5B)
2.b Aromatic/amide H refined with riding coordinates:
 C7(H7), C9(H9), C11(H11), C12(H12), C16(H16), C19(H19), C20(H20), C22(H22)
2.c Idealised Me refined as rotating group:
 C14(H14A,H14B,H14C), C15(H15A,H15B,H15C), C23(H23A,H23B,H23C), C24(H24A,H24B,
 H24C)
;
_shelx_res_checksum              93085
_shelx_hkl_checksum              1973
_olex2_submission_special_instructions 'No special instructions were received'