(3aR,4aR,7S, 7aS, 8aS)-7-(tert-Butyl-diphenyl-silanyloxymethyl)-2,2-dimethyl- hexahydro-furo[3',4':4,5]benzo[1,2-d][1,3]dioxol-5-one
Tizzard, Graham J.; Collins, Ian; Welford, Amanda; Hursthouse, Michael B.; Crystal Structure Report Archive  (2009) 870–; doi:

data_1520338
_publ_section_title
;
 (3aR,4aR,7S, 7aS,
 8aS)-7-(tert-Butyl-diphenyl-silanyloxymethyl)-2,2-dimethyl-
 hexahydro-furo[3',4':4,5]benzo[1,2-d][1,3]dioxol-5-one
;
_journal_name_full               'Crystal Structure Report Archive'
_journal_page_first              870
_journal_year                    2009
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C28 H36 O5 Si'
_chemical_formula_sum            'C28 H36 O5 Si'
_chemical_formula_weight         480.66
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   10.5375(7)
_cell_length_b                   15.9336(12)
_cell_length_c                   31.372(2)
_cell_measurement_reflns_used    132969
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     5267.4(6)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_data_collection       'COLLECT (Hooft, R.W.W., 1998)'
_computing_data_reduction
'DENZO (Otwinowski & Minor, 1997) & COLLECT (Hooft, R.W.W., 1998)'
_computing_molecular_graphics    'CAMERON (Watkin, et al., 1993)'
_computing_publication_material  'WINGX (Farrugia, 1998)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type
'Bruker-Nonius Roper CCD camera on \k-goniostat'
_diffrn_measurement_method       '\f & \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Bruker-Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1565
_diffrn_reflns_av_sigmaI/netI    0.0740
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            41604
_diffrn_reflns_theta_full        20.80
_diffrn_reflns_theta_max         20.80
_diffrn_reflns_theta_min         3.03
_exptl_absorpt_coefficient_mu    0.124
_exptl_absorpt_correction_T_max  0.9963
_exptl_absorpt_correction_T_min  0.9637
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2007/2 (Sheldrick, G.M., 2007)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.212
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       lath
_exptl_crystal_F_000             2064
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.335
_refine_diff_density_min         -0.270
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.195
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     623
_refine_ls_number_reflns         3108
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.195
_refine_ls_R_factor_all          0.0948
_refine_ls_R_factor_gt           0.0791
_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^)+(0.0327P)^2^+14.4176P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1479
_refine_ls_wR_factor_ref         0.1543
_reflns_number_gt                2689
_reflns_number_total             3108
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            eCrystal-870.cif
_cod_data_source_block           2009src1074a
_cod_depositor_comments
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Citation :
Tizzard, Graham J. and Collins, Ian and Welford, Amanda and 
Hursthouse, Michael B. (2009) 
University of Southampton, Crystal Structure Report Archive. 
(doi:10.5258/ecrystals/870)

More at:
http://ecrystals.chem.soton.ac.uk/870/
;
_cod_original_cell_volume        5267.4(7)
_cod_database_code               1520338