Carbon-Carbon Bond Activation by 1,1-Carboboration of Internal Alkynes
Chao Chen; Gerald Kehr; Roland Fröhlich; Gerhard Erker; Journal of the American Chemical Society 132 (2010) 13594–13595; doi:10.1021/ja106365j

data_4103179
_publ_section_title
;
 Carbon-Carbon Bond Activation by 1,1-Carboboration of Internal Alkynes
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              13594
_journal_page_last               13595
_journal_paper_doi               10.1021/ja106365j
_journal_volume                  132
_journal_year                    2010
_chemical_formula_sum            'C23 H22'
_chemical_formula_weight         298.41
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 103.369(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   31.2753(10)
_cell_length_b                   5.7604(2)
_cell_length_c                   20.1748(11)
_cell_measurement_reflns_used    2947
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      68.25
_cell_measurement_theta_min      0.88
_cell_volume                     3536.2(3)
_computing_cell_refinement       'Collect (Nonius B.V., 1998)'
_computing_data_collection       'Collect (Nonius B.V., 1998)'
_computing_data_reduction        'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'XP (BrukerAXS, 2000)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.954
_diffrn_measured_fraction_theta_max 0.954
_diffrn_measurement_device_type  'Nonius KappaCCD APEXII'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.045
_diffrn_reflns_av_sigmaI/netI    0.0344
_diffrn_reflns_limit_h_max       36
_diffrn_reflns_limit_h_min       -35
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            10973
_diffrn_reflns_theta_full        67.25
_diffrn_reflns_theta_max         67.25
_diffrn_reflns_theta_min         4.51
_exptl_absorpt_coefficient_mu    0.471
_exptl_absorpt_correction_T_max  0.9544
_exptl_absorpt_correction_T_min  0.8525
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Denzo (Otwinowski, Borek, Majewski & Minor, 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.121
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1280
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.163
_refine_diff_density_min         -0.147
_refine_diff_density_rms         0.037
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     211
_refine_ls_number_reflns         3015
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0548
_refine_ls_R_factor_gt           0.0465
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0647P)^2^+1.7499P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1208
_refine_ls_wR_factor_ref         0.1279
_reflns_number_gt                2547
_reflns_number_total             3015
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja106365j_si_004.cif
_cod_data_source_block           erk5666
_cod_database_code               4103179