Concise Total Synthesis of Herqulines B and C.
He, Chi; Stratton, Thomas P.; Baran, Phil S.; Journal of the American Chemical Society 141 (2019) 29–32; doi:10.1021/jacs.8b13029

data_4133657
_publ_section_title
;
 Concise Total Synthesis of Herqulines B and C.
;
_journal_issue                   1
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              29
_journal_page_last               32
_journal_paper_doi               10.1021/jacs.8b13029
_journal_volume                  141
_journal_year                    2019
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C20 H26 N2 O2'
_chemical_formula_sum            'C20 H26 N2 O2'
_chemical_formula_weight         326.43
_space_group_crystal_system      hexagonal
_space_group_IT_number           170
_space_group_name_Hall           'P 65'
_space_group_name_H-M_alt        'P 65'
_atom_sites_solution_hydrogens   mixed
_audit_creation_date             2018-11-29
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            6
_cell_length_a                   19.5192(4)
_cell_length_b                   19.5192(4)
_cell_length_c                   8.5136(2)
_cell_measurement_reflns_used    9968
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      70.71
_cell_measurement_theta_min      2.61
_cell_volume                     2809.10(10)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_collection       'APEX2 v2013.6-2 (Bruker, 2013)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_diffrn_ambient_temperature      100.0
_diffrn_detector                 'Bruker APEX-II CCD'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD Area Detector'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       'Kappa Four-Circle Diffractometer'
_diffrn_measurement_device_type  'Bruker APEX II Ultra'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'Double Bounce Multilayer Mirrors'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0326
_diffrn_reflns_av_unetI/netI     0.0164
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            29527
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.991
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         71.208
_diffrn_reflns_theta_min         2.614
_diffrn_source                   'Micro Focus Rotating Anode'
_diffrn_source_type              'Bruker TXS'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.591
_exptl_absorpt_correction_T_max  0.7534
_exptl_absorpt_correction_T_min  0.6607
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.0810 before and 0.0413 after correction. The Ratio of minimum to maximum transmission is 0.8770. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.158
_exptl_crystal_description       plank
_exptl_crystal_F_000             1056
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.259
_refine_diff_density_min         -0.112
_refine_diff_density_rms         0.028
_refine_ls_abs_structure_details
;
 Flack x determined using 1587 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.04(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     222
_refine_ls_number_reflns         3598
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.0283
_refine_ls_R_factor_gt           0.0272
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0428P)^2^+0.4545P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0716
_refine_ls_wR_factor_ref         0.0726
_reflns_Friedel_coverage         0.859
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.987
_reflns_number_gt                3506
_reflns_number_total             3598
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b13029_si_002.cif
_cod_data_source_block           baran708_sq
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_diffrn_radiation_probe' value 'X-ray' was changed to
'x-ray' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/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 
;
_cod_original_cell_volume        2809.10(13)
_cod_database_code               4133657
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_max   0.977
_shelx_estimated_absorpt_t_min   0.871
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C3(H3), C5(H5), C9(H9)
2.b Secondary CH2 refined with riding coordinates:
 C2(H2A,H2B), C4(H4A,H4B), C6(H6A,H6B), C11(H11A,H11B), C12(H12A,H12B),
 C13(H13A,H13B)
2.c Aromatic/amide H refined with riding coordinates:
 C8(H8), C15(H15), C16(H16), C19(H19)
2.d Idealised Me refined as rotating group:
 C1(H1A,H1B,H1C), C20(H20A,H20B,H20C)
;
_shelx_res_checksum              55246
_shelx_hkl_checksum              52785
_shelx_fab_checksum              58578
_platon_squeeze_void_probe_radius 1.20
_olex2_submission_special_instructions 'No special instructions were received'