Conformation and reactivity in dibenzocyclooctadienes (DBCOD). A general approach to the total synthesis of fully substituted DBCOD lignans via borostannylative cyclization of α,ω-diynes
Gong, Wei; RajanBabu, T. V.; Chemical Science 4 (2013) 3979–; doi:10.1039/c3sc51751a

data_1514552
_publ_section_title
;
 Conformation and reactivity in dibenzocyclooctadienes (DBCOD). A general
 approach to the total synthesis of fully substituted DBCOD lignans via
 borostannylative cyclization of \a,\w-diynes
;
_journal_issue                   10
_journal_name_full               'Chemical Science'
_journal_page_first              3979
_journal_paper_doi               10.1039/c3sc51751a
_journal_volume                  4
_journal_year                    2013
_chemical_absolute_configuration ad
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C29 H40 O9 Si1'
_chemical_formula_sum            'C29 H40 O9 Si'
_chemical_formula_weight         560.7
_chemical_name_common            'RajanBabu 1913'
_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'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4
_audit_creation_date             2012-10-05T10:55:27-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.7843(1)
_cell_length_b                   14.0454(2)
_cell_length_c                   19.3783(2)
_cell_measurement_reflns_used    3790
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.485
_cell_measurement_theta_min      1.018
_cell_measurement_wavelength     0.71073
_cell_volume                     2935.23(6)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Bruker AXS BV, 1997-2004)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_orient_matrix_type       'by Bruker AXS Collect from scalepack cell'
_diffrn_orient_matrix_UB_11      0.784799E-1
_diffrn_orient_matrix_UB_12      0.120185E-1
_diffrn_orient_matrix_UB_13      -0.260688E-1
_diffrn_orient_matrix_UB_21      -0.402897E-1
_diffrn_orient_matrix_UB_22      -0.23478E-1
_diffrn_orient_matrix_UB_23      -0.432513E-1
_diffrn_orient_matrix_UB_31      -0.28566E-1
_diffrn_orient_matrix_UB_32      0.661321E-1
_diffrn_orient_matrix_UB_33      -0.106174E-1
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.039
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            50819
_diffrn_reflns_theta_full        27.5
_diffrn_reflns_theta_max         27.5
_diffrn_reflns_theta_min         2.1
_diffrn_source                   'Enraf Nonius FR590'
_exptl_absorpt_coefficient_mu    0.131
_exptl_absorpt_correction_T_max  0.981
_exptl_absorpt_correction_T_min  0.846
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'HKL Scalepack (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.269
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'rectangular block'
_exptl_crystal_F_000             1200
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.203
_refine_diff_density_min         -0.19
_refine_diff_density_rms         0.038
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.08(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     367
_refine_ls_number_reflns         6718
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0457
_refine_ls_R_factor_gt           0.0345
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0359P)^2^+0.6975P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0751
_refine_ls_wR_factor_ref         0.0801
_reflns_number_gt                5822
_reflns_number_total             6718
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c3sc51751a.txt
_cod_data_source_block           RajanBabu1913
_cod_database_code               1514552