Radical-chain reductive alkylation of electron-rich alkenes mediated by silanes in the presence of thiols as polarity-reversal catalysts
Dang, Hai-Shan; Elsegood, Mark R. J.; Kim, Kyoung-Mahn; Roberts, Brian P.; Journal of the Chemical Society, Perkin Transactions 1  (1999) 2061–; doi:10.1039/a903961i

data_7213098
_publ_section_title
;
 Radical-chain reductive alkylation of electron-rich alkenes mediated by
 silanes in the presence of thiols as polarity-reversal catalysts
;
_journal_issue                   15
_journal_name_full
'Journal of the Chemical Society, Perkin Transactions 1'
_journal_page_first              2061
_journal_paper_doi               10.1039/a903961i
_journal_year                    1999
_chemical_formula_sum            'C18 H28 O8'
_chemical_formula_weight         372.40
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   'all non-H atoms found by direct methods'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 107.559(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.0392(8)
_cell_length_b                   7.6254(6)
_cell_length_c                   13.2278(11)
_cell_measurement_reflns_used    42
_cell_measurement_temperature    160(2)
_cell_measurement_theta_max      24.90
_cell_measurement_theta_min      21.45
_cell_volume                     965.45(14)
_computing_cell_refinement       'Stoe DIF4'
_computing_data_collection       'Stoe DIF4'
_computing_data_reduction        'local programs'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'SHELXTL and local programs'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      160(2)
_diffrn_measured_fraction_theta_full 0.914
_diffrn_measured_fraction_theta_max 0.914
_diffrn_measurement_device_type  'Stoe-Siemens diffractometer'
_diffrn_measurement_method       '\w/\q scans with on-line profile fitting'
_diffrn_radiation_monochromator  '8 micron nickel filter'
_diffrn_radiation_source         'Bede Scientific Microsource tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0267
_diffrn_reflns_av_sigmaI/netI    0.0243
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            3630
_diffrn_reflns_theta_full        67.60
_diffrn_reflns_theta_max         67.60
_diffrn_reflns_theta_min         3.50
_diffrn_standards_decay_%        2
_diffrn_standards_interval_time  60
_diffrn_standards_number         5
_exptl_absorpt_coefficient_mu    0.843
_exptl_absorpt_correction_T_max  0.891
_exptl_absorpt_correction_T_min  0.708
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.281
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             400
_exptl_crystal_size_max          0.44
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.212
_refine_diff_density_min         -0.161
_refine_diff_density_rms         0.035
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.1(2)
_refine_ls_extinction_coef       0.0249(18)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     241
_refine_ls_number_reflns         2956
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0420
_refine_ls_R_factor_gt           0.0409
_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^)+(0.0609P)^2^+0.3260P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1086
_refine_ls_wR_factor_ref         0.1101
_reflns_number_gt                2898
_reflns_number_total             2956
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            903961isup1.cif
_cod_data_source_block           (S)-11ai
_cod_original_cell_volume        965.44(13)
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               7213098