Access to distal biaxial atropisomers by iridium catalyzed asymmetric C-H alkylation.
Hu, Xueqing; Zhao, Yunxu; He, Tong; Niu, Caoyue; Liu, Feipeng; Jia, Wei; Mu, Yi; Li, Xingwei; Rong, Zi-Qiang; Chemical science 15 (2024) 13541–13549; doi:10.1039/d4sc01837k

data_1572153
_publ_section_title
;
 Access to distal biaxial atropisomers by iridium catalyzed asymmetric C-H
 alkylation.
;
_journal_issue                   33
_journal_name_full               'Chemical science'
_journal_page_first              13541
_journal_page_last               13549
_journal_paper_doi               10.1039/d4sc01837k
_journal_volume                  15
_journal_year                    2024
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C42 H35 N3 O4'
_chemical_formula_sum            'C42 H35 N3 O4'
_chemical_formula_weight         645.73
_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
_atom_sites_solution_primary     dual
_audit_creation_date             2023-07-17
_audit_creation_method
;
Olex2 1.5
(compiled 2023.03.06 svn.rbb2c1857 for OlexSys, GUI svn.r6748)
;
_audit_update_record
;
2023-07-21 deposited with the CCDC.	2024-07-22 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.4007(3)
_cell_length_b                   12.6971(3)
_cell_length_c                   23.0034(6)
_cell_measurement_reflns_used    9601
_cell_measurement_temperature    193.00
_cell_measurement_theta_max      68.045
_cell_measurement_theta_min      4.328
_cell_volume                     3329.88(15)
_computing_cell_refinement       'SAINT V8.40B (?, 2016)'
_computing_data_reduction        'SAINT V8.40B (?, 2016)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      193.00
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker D8 VENTURE'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0374
_diffrn_reflns_av_unetI/netI     0.0166
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            77740
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         68.302
_diffrn_reflns_theta_min         3.843
_diffrn_source_current           1.1
_diffrn_source_power             0.05500000000000001
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.665
_exptl_absorpt_correction_T_max  0.7531
_exptl_absorpt_correction_T_min  0.6912
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.0666 before and 0.0450 after correction.
The Ratio of minimum to maximum transmission is 0.9178.
The \l/2 correction factor is Not present.
;
_exptl_crystal_density_diffrn    1.288
_exptl_crystal_description       block
_exptl_crystal_F_000             1360
_exptl_crystal_size_max          0.13
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.172
_refine_diff_density_min         -0.094
_refine_diff_density_rms         0.029
_refine_ls_abs_structure_details
;
 Flack x determined using 2593 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.01(3)
_refine_ls_extinction_coef       0.0031(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2018/3 (Sheldrick 2018)'
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     446
_refine_ls_number_reflns         6111
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0249
_refine_ls_R_factor_gt           0.0245
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0361P)^2^+0.3594P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0645
_refine_ls_wR_factor_ref         0.0648
_reflns_Friedel_coverage         0.777
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.999
_reflns_number_gt                6000
_reflns_number_total             6111
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d4sc01837k2.cif
_cod_data_source_block           cu_230715lu_xgd_rzq_hxq_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_chemical_absolute_configuration' value 'AD' was changed
to 'ad' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/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 8170 2020-07-09 18:12:32Z antanas 

 Adding full bibliography for 1572152--1572155.cif.
;
_cod_database_code               1572153
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.937
_shelx_estimated_absorpt_t_min   0.919
_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 Ternary CH refined with riding coordinates:
 C16(H16), C17(H17), C18(H18), C20(H20), C22(H22)
2.b Secondary CH2 refined with riding coordinates:
 C19(H19a,H19b), C21(H21a,H21b)
2.c Aromatic/amide H refined with riding coordinates:
 C4(H4), C7(H7), C8(H8), C9(H9), C10(H10), C11(H11), C24(H24), C28(H28),
 C29(H29), C30(H30), C31(H31), C35(H35), C36(H36), C39(H39), C40(H40), C41(H41),
  C42(H42)
2.d Idealised Me refined as rotating group:
 C1(H1a,H1b,H1c), C13(H13a,H13b,H13c), C26(H26a,H26b,H26c)
;
_shelx_res_checksum              69162
_shelx_hkl_checksum              1641
_olex2_submission_special_instructions 'No special instructions were received'