The Pauson-Khand reaction using alkynylboronic esters: solving a long-standing regioselectivity issue.
León, Thierry; Fernández, Elena; Chemical communications (Cambridge, England) 52 (2016) 9363–9366; doi:10.1039/c6cc04717c

data_7124803
_publ_section_title
;
 The Pauson-Khand reaction using alkynylboronic esters: solving a
 long-standing regioselectivity issue.
;
_journal_issue                   60
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              9363
_journal_page_last               9366
_journal_paper_doi               10.1039/c6cc04717c
_journal_volume                  52
_journal_year                    2016
_chemical_absolute_configuration ad
_chemical_formula_sum            'C23 H19 N O S'
_chemical_formula_weight         357.45
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2016-06-02 deposited with the CCDC.
2016-07-04 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.6327(6)
_cell_length_b                   14.2928(15)
_cell_length_c                   21.544(3)
_cell_measurement_reflns_used    616
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      20.94
_cell_measurement_theta_min      3.78
_cell_volume                     1734.4(4)
_computing_cell_refinement       'Bruker APEX2 v2011.4-0'
_computing_data_collection       'Bruker APEX2 v2011.4-0'
_computing_data_reduction        'Bruker SAINT V7.60A'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    Sir2011
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 512
_diffrn_detector_type            '4K CCD area detector APEX II'
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'APEX DUO Kappa 4-axis goniometer'
_diffrn_measurement_method
;
 Fullsphere data collection, phi and omega scans
;
_diffrn_measurement_specimen_support 'magnetic support with MicroMount'
_diffrn_radiation_monochromator  'Quazar MX Multilayer Optics'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0580
_diffrn_reflns_av_unetI/netI     0.0673
_diffrn_reflns_Laue_measured_fraction_full 0.984
_diffrn_reflns_Laue_measured_fraction_max 0.983
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            11276
_diffrn_reflns_point_group_measured_fraction_full 0.967
_diffrn_reflns_point_group_measured_fraction_max 0.963
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.346
_diffrn_reflns_theta_min         1.710
_diffrn_source                   'Microfocus source E025 IuS'
_diffrn_source_current           0.6
_diffrn_source_power             50
_diffrn_source_size              '0.2 mm x 0.2 mm fine focus'
_diffrn_source_type              'Bruker APEX DUO'
_exptl_absorpt_coefficient_mu    0.198
_exptl_absorpt_correction_T_max  0.980
_exptl_absorpt_correction_T_min  0.892
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
; 
 SADABS Version 2008/1 Bruker-Nonius
 Blessing, Acta Cryst. (1995) A51 33-38
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.369
_exptl_crystal_description       block
_exptl_crystal_F_000             752
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.228
_refine_diff_density_min         -0.263
_refine_diff_density_rms         0.054
_refine_ls_abs_structure_details
;
 Flack x determined using 866 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.06(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.052
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     254
_refine_ls_number_reflns         3394
_refine_ls_number_restraints     50
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0677
_refine_ls_R_factor_gt           0.0478
_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^)+(0.0481P)^2^+0.1691P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0995
_refine_ls_wR_factor_ref         0.1104
_reflns_Friedel_coverage         0.678
_reflns_Friedel_fraction_full    0.943
_reflns_Friedel_fraction_max     0.936
_reflns_number_gt                2650
_reflns_number_total             3394
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6cc04717c2.cif
_cod_data_source_block           mo_TSL2_119_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Orthorhombic' was changed
to 'orthorhombic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/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        1734.4(3)
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7124803
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.961
_shelx_estimated_absorpt_t_max   0.980
_shelx_res_checksum              33282