Studies on the Photochemical Rearrangements of Enantiomerically Pure, Polysubstituted, and Variously Annulated Bicyclo[2.2.2]octenones.
Yan, Qiao; Bolte, Benoit; Bai, Yuhua; Banwell, Martin G.; Willis, Anthony C.; Carr, Paul D.; The Journal of organic chemistry 82 (2017) 8008–8022; doi:10.1021/acs.joc.7b01243

data_4032654
_publ_section_title
;
 Studies on the Photochemical Rearrangements of Enantiomerically Pure,
 Polysubstituted, and Variously Annulated Bicyclo[2.2.2]octenones.
;
_journal_issue                   15
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              8008
_journal_page_last               8022
_journal_paper_doi               10.1021/acs.joc.7b01243
_journal_volume                  82
_journal_year                    2017
_chemical_absolute_configuration ad
_chemical_compound_source        local
_chemical_formula_moiety         'C22 H36 O4 Si'
_chemical_formula_sum            'C22 H36 O4 Si'
_chemical_formula_weight         392.61
_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   difmap
_atom_sites_solution_primary     direct
_audit_creation_date             16-03-04
_audit_creation_method           CRYSTALS_ver_14.40
_audit_update_record
;
2016-03-04 - Report on C22 H36 O4 Si 
             by Anthony C. Willis
             for   Benoit Bolte and Martin Banwell

2016-03-04 - details of refinement in _refine_special_details below

2016-03-04 - passes checkcif tests with minor warnings  
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   25.6494(7)
_cell_length_b                   14.1949(4)
_cell_length_c                   6.2343(2)
_cell_measurement_reflns_used    13775
_cell_measurement_temperature    150
_cell_measurement_theta_max      28
_cell_measurement_theta_min      3
_cell_volume                     2269.85(12)
_computing_cell_refinement       'CrysAlisPro (Agilent Technologies, 2015)'
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35h (release 09-02-2015 CrysAlis171 .NET)
(compiled Feb 9 2015,16:26:32)
;
_computing_data_reduction        'CrysAlisPro (Agilent Technologies, 2015)'
_computing_molecular_graphics    'PLATON (Spek, 2008)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.967
_diffrn_measurement_device       Area
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, EosS2'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_source         'Supermova (Mo) X-ray Source'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.045
_diffrn_reflns_limit_h_max       35
_diffrn_reflns_limit_h_min       -35
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            49644
_diffrn_reflns_theta_full        28.518
_diffrn_reflns_theta_max         29.386
_diffrn_reflns_theta_min         2.140
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.126
_exptl_absorpt_correction_T_max  0.99
_exptl_absorpt_correction_T_min  0.79
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.35h (release 09-02-2015 CrysAlis171 .NET)
(compiled Feb 9 2015,16:26:32)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.149
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             856
_exptl_crystal_size_max          0.271
_exptl_crystal_size_mid          0.101
_exptl_crystal_size_min          0.042
_refine_diff_density_max         0.31
_refine_diff_density_min         -0.27
_refine_ls_abs_structure_details 'Flack (1983), 2455 Friedel-pairs'
_refine_ls_abs_structure_Flack   -0.01(11)
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.0390
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     245
_refine_ls_number_reflns         5914
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0506
_refine_ls_R_factor_gt           0.0448
_refine_ls_shift/su_max          0.0010463
_refine_ls_shift/su_mean         0.0000840
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method= Modified Sheldrick 
 w=1/[\s^2^(F^2^) + ( 0.05P)^2^ + 0.85P] 
 ,where P=(max(Fo^2^,0) + 2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.1019
_refine_ls_wR_factor_gt          0.0997
_refine_ls_wR_factor_ref         0.1019
_reflns_limit_h_max              35
_reflns_limit_h_min              -34
_reflns_limit_k_max              19
_reflns_limit_k_min              0
_reflns_limit_l_max              8
_reflns_limit_l_min              0
_reflns_number_gt                5443
_reflns_number_total             5914
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   1.67
_oxford_diffrn_Wilson_scale      0.06
_oxford_refine_ls_r_factor_ref   0.0506
_oxford_refine_ls_scale          4.31(5)
_oxford_reflns_number_all        5914
_oxford_reflns_threshold_expression_ref I>-10.0\s(I)
_oxford_structure_analysis_title 'Z:\ban1613bSNM\Tony_ban1613bSNM_ At 14:15 on'
_cod_data_source_file            jo7b01243_si_003.cif
_cod_data_source_block           ban1613bSNM_compound_47
_cod_depositor_comments
'Adding full bibliography for 4032648--4032665.cif.'
_cod_original_cell_volume        2269.85(11)
_cod_original_sg_symbol_H-M      'P 21 21 21 '
_cod_database_code               4032654
_iucr_refine_instruction_details_constraints
;
BLOCK SCALE X'S, U'S 
CONT ENANTIO 
RIDE C   (   2,X'S) H   (  21,X'S) 
RIDE C   (   3,X'S) H   (  31,X'S) 
RIDE C   (   4,X'S) H   (  41,X'S) 
RIDE C   (   5,X'S) H   (  51,X'S) H   (  52,X'S) 
RIDE C   (   6,X'S) H   (  61,X'S) 
RIDE C   (   7,X'S) H   (  71,X'S) 
RIDE C   (   9,X'S) H   (  91,X'S) 
RIDE C   (  11,X'S) H   ( 111,X'S) 
RIDE C   (  12,X'S) H   ( 121,X'S) H   ( 122,X'S) H   ( 123,X'S) 
RIDE C   (  13,X'S) H   ( 131,X'S) H   ( 132,X'S) H   ( 133,X'S) 
RIDE C   (  14,X'S) H   ( 141,X'S) H   ( 142,X'S) H   ( 143,X'S) 
RIDE C   (  16,X'S) H   ( 161,X'S) H   ( 162,X'S) H   ( 163,X'S) 
RIDE C   (  17,X'S) H   ( 171,X'S) H   ( 172,X'S) H   ( 173,X'S) 
RIDE C   (  18,X'S) H   ( 181,X'S) H   ( 182,X'S) H   ( 183,X'S) 
RIDE C   (  20,X'S) H   ( 201,X'S) H   ( 202,X'S) H   ( 203,X'S) 
RIDE C   (  21,X'S) H   ( 211,X'S) H   ( 212,X'S) H   ( 213,X'S) 
RIDE C   (  22,X'S) H   ( 221,X'S) H   ( 222,X'S) H   ( 223,X'S) 
END                                                                             
;
_iucr_refine_instruction_details_restraints
;
NO 
REM   HREST   START (DO NOT REMOVE THIS LINE) 
REM   HREST   END (DO NOT REMOVE THIS LINE) 
END                                                                             
;