Stereocontrolled construction of either stereoisomer of 12-oxatricyclo[6.3.1.0(2,7)]dodecanes using Prins-pinacol reactions.
Overman, Larry E.; Velthuisen, Emile J.; Organic letters 6 (2004) 3853–3856; doi:10.1021/ol0482745

data_1506961
_publ_section_title
;
 Stereocontrolled construction of either stereoisomer of
 12-oxatricyclo[6.3.1.0(2,7)]dodecanes using Prins-pinacol reactions.
;
_journal_issue                   21
_journal_name_full               'Organic letters'
_journal_page_first              3853
_journal_page_last               3856
_journal_paper_doi               10.1021/ol0482745
_journal_volume                  6
_journal_year                    2004
_chemical_formula_sum            'C23 H42 O3 S2 Si'
_chemical_formula_weight         458.78
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXTL
_cell_angle_alpha                81.888(4)
_cell_angle_beta                 88.834(5)
_cell_angle_gamma                88.885(5)
_cell_formula_units_Z            4
_cell_length_a                   7.323(2)
_cell_length_b                   17.750(5)
_cell_length_c                   19.552(5)
_cell_measurement_temperature    163(2)
_cell_volume                     2515.1(12)
_computing_cell_refinement       'Bruker SMART/SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      163(2)
_diffrn_measured_fraction_theta_full 0.955
_diffrn_measured_fraction_theta_max 0.955
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0455
_diffrn_reflns_av_sigmaI/netI    0.0643
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            21682
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         2.10
_diffrn_standards_decay_%        '< 1.0'
_diffrn_standards_interval_count 'initial 50 frames recollected'
_diffrn_standards_number         '50 frames'
_exptl_absorpt_coefficient_mu    0.280
_exptl_absorpt_correction_T_max  0.9206
_exptl_absorpt_correction_T_min  0.8914
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.212
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       irregular
_exptl_crystal_F_000             1000
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.30
_refine_diff_density_max         3.288
_refine_diff_density_min         -0.975
_refine_diff_density_rms         0.185
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.084
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     523
_refine_ls_number_reflns         9819
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.084
_refine_ls_R_factor_all          0.1355
_refine_ls_R_factor_gt           0.1218
_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^)+(0.1733P)^2^+24.8984P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3458
_refine_ls_wR_factor_ref         0.3552
_reflns_number_gt                7877
_reflns_number_total             9819
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol0482745si20040830_022042.cif
_cod_data_source_block           leo147
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_cell_volume        2515.0(12)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1506961