Intermolecular/Intramolecular sequential aldol reaction.
Izumiseki, Atsuto; Yamamoto, Hisashi; Journal of the American Chemical Society 136 (2014) 1308–1311; doi:10.1021/ja413008a

data_4120473
_publ_section_title
;
 Intermolecular/Intramolecular sequential aldol reaction.
;
_journal_issue                   4
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              1308
_journal_page_last               1311
_journal_paper_doi               10.1021/ja413008a
_journal_volume                  136
_journal_year                    2014
_chemical_formula_moiety         'C40 H78 O3 Si8'
_chemical_formula_sum            'C40 H78 O3 Si8'
_chemical_formula_weight         831.74
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      4
_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   difmap
_cell_angle_alpha                90.0000
_cell_angle_beta                 107.525(8)
_cell_angle_gamma                90.0000
_cell_formula_units_Z            6
_cell_length_a                   14.981(3)
_cell_length_b                   17.610(3)
_cell_length_c                   20.610(4)
_cell_measurement_reflns_used    14438
_cell_measurement_temperature    173
_cell_measurement_theta_max      27.72
_cell_measurement_theta_min      3.00
_cell_volume                     5184.9(17)
_computing_cell_refinement       PROCESS-AUTO
_computing_data_collection       PROCESS-AUTO
_computing_data_reduction        PROCESS-AUTO
_computing_molecular_graphics    'CrystalStructure 4.0'
_computing_publication_material  'CrystalStructure 4.0 (Rigaku, 2010)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173
_diffrn_detector_area_resol_mean 6.849
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Rigaku XtaLAB mini'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0681
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            47168
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.48
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.357
_exptl_absorpt_correction_T_max  0.931
_exptl_absorpt_correction_T_min  0.665
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'REQAB (Rigaku, 1998)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.598
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             2724.00
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.330
_refine_diff_density_min         -0.260
_refine_ls_abs_structure_details
'Flack, H. D. (1983), Acta Cryst. A39, 876-881.  10970 Friedel Pairs'
_refine_ls_abs_structure_Flack   -0.04(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.010
_refine_ls_hydrogen_treatment    constr
_refine_ls_number_parameters     901
_refine_ls_number_reflns         23128
_refine_ls_number_restraints     1
_refine_ls_R_factor_gt           0.0630
_refine_ls_shift/su_max          0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0438P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.1273
_reflns_number_gt                15646
_reflns_number_total             23128
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            ja413008a_si_001.cif
_cod_data_source_block           User-defined
_cod_original_cell_volume        5184.8(15)
_cod_database_code               4120473