Synthesis of Bromo-, Boryl-, and Stannyl-Functionalized 1,2-Bis(trimethylsilyl)benzenes via Diels-Alder or C-H Activation Reactions
Christian Reus; Nai-Wei Liu; Michael Bolte; Hans-Wolfram Lerner; Matthias Wagner; Journal of Organic Chemistry 77 (2012) 3518–3523; doi:10.1021/jo3002936

data_4027138
_publ_section_title
;
 Synthesis of Bromo-, Boryl-, and Stannyl-Functionalized
 1,2-Bis(trimethylsilyl)benzenes via Diels-Alder or C-H Activation
 Reactions
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              3518
_journal_page_last               3523
_journal_paper_doi               10.1021/jo3002936
_journal_volume                  77
_journal_year                    2012
_chemical_formula_moiety         'C18 H33 B O2 Si2'
_chemical_formula_sum            'C18 H33 B O2 Si2'
_chemical_formula_weight         348.43
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 95.778(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   11.5399(7)
_cell_length_b                   13.0173(8)
_cell_length_c                   29.3178(19)
_cell_measurement_reflns_used    12183
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      25.1
_cell_measurement_theta_min      2.4
_cell_volume                     4381.7(5)
_computing_cell_refinement       'X-Area (Stoe & Cie, 2001)'
_computing_data_collection       'X-Area (Stoe & Cie, 2001)'
_computing_data_reduction        'X-Area (Stoe & Cie, 2001)'
_computing_molecular_graphics    'XP (Sheldrick, 2008)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008) '
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008) '
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'STOE IPDS II two-circle-diffractometer'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1154
_diffrn_reflns_av_sigmaI/netI    0.1273
_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       34
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            35118
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.04
_diffrn_reflns_theta_min         2.10
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.168
_exptl_absorpt_correction_T_max  0.9933
_exptl_absorpt_correction_T_min  0.9688
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'MULABS (Spek, 2003; Blessing, 1995)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.056
_exptl_crystal_description       plate
_exptl_crystal_F_000             1520
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.207
_refine_diff_density_min         -0.315
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.822
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     415
_refine_ls_number_reflns         7715
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.822
_refine_ls_R_factor_all          0.1259
_refine_ls_R_factor_gt           0.0546
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0349P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1031
_refine_ls_wR_factor_ref         0.1231
_reflns_number_gt                3800
_reflns_number_total             7715
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jo3002936_si_002_4.cif
_cod_data_source_block           wa1344
_cod_database_code               4027138