Asymmetric Synthesis of Chiral Spiroketal Bisphosphine Ligands and Their Application in Enantioselective Olefin Hydrogenation.
Huang, Jian; Hong, Mao; Wang, Chuan-Chuan; Kramer, Søren; Lin, Guo-Qiang; Sun, Xing-Wen; The Journal of organic chemistry 83 (2018) 12838–12846; doi:10.1021/acs.joc.8b01693

data_4035422
_publ_section_title
;
 Asymmetric Synthesis of Chiral Spiroketal Bisphosphine Ligands and Their
 Application in Enantioselective Olefin Hydrogenation.
;
_journal_issue                   20
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              12838
_journal_page_last               12846
_journal_paper_doi               10.1021/acs.joc.8b01693
_journal_volume                  83
_journal_year                    2018
_chemical_absolute_configuration rm
_chemical_formula_sum            'C41 H34 O2 P2'
_chemical_formula_weight         620.62
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.3893(3)
_cell_length_b                   14.6404(4)
_cell_length_c                   20.3796(5)
_cell_measurement_reflns_used    9878
_cell_measurement_temperature    301.(2)
_cell_measurement_theta_max      27.4760
_cell_measurement_theta_min      2.4761
_cell_volume                     3398.17(15)
_computing_cell_refinement       'SAINT V8.38A (Bruker AXS Inc., 2017)'
_computing_data_collection       'Bruker Instrument Service vV6.2.6'
_computing_data_reduction        'SAINT V8.38A (Bruker AXS Inc., 2017)'
_computing_molecular_graphics    'shelXle (C.B. Huebschle, rev 833)'
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      301.(2)
_diffrn_detector_area_resol_mean 7.3910
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'D8 Advance PhotonII'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0289
_diffrn_reflns_av_unetI/netI     0.0193
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            51414
_diffrn_reflns_theta_full        27.52
_diffrn_reflns_theta_max         27.52
_diffrn_reflns_theta_min         2.48
_exptl_absorpt_coefficient_mu    0.162
_exptl_absorpt_correction_T_max  0.94
_exptl_absorpt_correction_T_min  0.90
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 - Bruker AXS area detector scaling and absorption correction
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.213
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1304
_exptl_crystal_size_max          0.500
_exptl_crystal_size_mid          0.500
_exptl_crystal_size_min          0.350
_refine_diff_density_max         0.152
_refine_diff_density_min         -0.185
_refine_ls_abs_structure_details
;

Flack x determined using 2994 quotients [(I+)-(I-)]/[(I+)+(I-)]
(Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.013(16)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     408
_refine_ls_number_reflns         7760
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0365
_refine_ls_R_factor_gt           0.0312
_refine_ls_shift/su_max          0.009
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0431P)^2^+0.3707P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0779
_refine_ls_wR_factor_ref         0.0819
_reflns_number_gt                7137
_reflns_number_total             7760
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo8b01693_si_002.cif
_cod_data_source_block           hj678
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Multi-Scan' was
changed to 'multi-scan' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/current/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
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_cod_database_code               4035422
_shelx_res_checksum              44023
_shelx_hkl_checksum              76204