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_4032658
_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         'C15 H26 O3 Si'
_chemical_formula_sum            'C15 H26 O3 Si'
_chemical_formula_weight         282.46
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_audit_creation_date             16-04-04
_audit_creation_method           CRYSTALS_ver_14.40
_audit_update_record
;
2016-04-04 - Report on C15 H26 O3 Si 
             by Anthony C. Willis
             for   Qiao Yan and Martin Banwell

2016-04-06 - details of refinement in _refine_special_details below

2016-04-06 - passes checkcif tests with minor warnings  
;
_cell_angle_alpha                90
_cell_angle_beta                 105.950(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   18.9377(5)
_cell_length_b                   6.2442(1)
_cell_length_c                   14.6275(5)
_cell_measurement_reflns_used    6356
_cell_measurement_temperature    150
_cell_measurement_theta_max      72
_cell_measurement_theta_min      3
_cell_volume                     1663.12(8)
_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 0.997
_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         'Supernova (Cu) X-ray Source'
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.044
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            12204
_diffrn_reflns_theta_full        72.389
_diffrn_reflns_theta_max         72.389
_diffrn_reflns_theta_min         3.142
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.262
_exptl_absorpt_correction_T_max  0.98
_exptl_absorpt_correction_T_min  0.73
_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    1.128
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       lath
_exptl_crystal_F_000             616
_exptl_crystal_size_max          0.335
_exptl_crystal_size_mid          0.048
_exptl_crystal_size_min          0.019
_refine_diff_density_max         0.29
_refine_diff_density_min         -0.31
_refine_ls_abs_structure_details 'Flack (1983), 1238 Friedel-pairs'
_refine_ls_abs_structure_Flack   0.00(3)
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   0.9905
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     176
_refine_ls_number_reflns         3042
_refine_ls_number_restraints     1
_refine_ls_R_factor_all          0.0344
_refine_ls_R_factor_gt           0.0319
_refine_ls_shift/su_max          0.0018619
_refine_ls_shift/su_mean         0.0002828
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method= Modified Sheldrick 
 w=1/[\s^2^(F^2^) + ( 0.04P)^2^ + 0.57P] 
 ,where P=(max(Fo^2^,0) + 2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0802
_refine_ls_wR_factor_gt          0.0787
_refine_ls_wR_factor_ref         0.0802
_reflns_limit_h_max              22
_reflns_limit_h_min              -23
_reflns_limit_k_max              6
_reflns_limit_k_min              -7
_reflns_limit_l_max              18
_reflns_limit_l_min              0
_reflns_number_gt                2889
_reflns_number_total             3042
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   2.16
_oxford_diffrn_Wilson_scale      0.05
_oxford_refine_ls_r_factor_ref   0.0344
_oxford_refine_ls_scale          4.75(7)
_oxford_reflns_number_all        3042
_oxford_reflns_threshold_expression_ref I>-10.0\s(I)
_oxford_structure_analysis_title 'Z:\ban1620ASN\Tony_ban1620ASN_da At 11:35 on'
_cod_data_source_file            jo7b01243_si_002.cif
_cod_data_source_block           ban1620ASN_compound_9
_cod_depositor_comments
'Adding full bibliography for 4032648--4032665.cif.'
_cod_original_sg_symbol_H-M      'C 1 2 1 '
_cod_database_code               4032658
_iucr_refine_instruction_details_constraints
;
BLOCK SCALE X'S, U'S H(1,X'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   (   7,X'S) H   (  71,X'S) 
RIDE C   (   8,X'S) H   (  81,X'S) 
RIDE C   (   9,X'S) H   (  91,X'S) H   (  92,X'S) H   (  93,X'S) 
RIDE C   (  10,X'S) H   ( 101,X'S) H   ( 102,X'S) H   ( 103,X'S) 
RIDE C   (  11,X'S) H   ( 111,X'S) H   ( 112,X'S) H   ( 113,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   (  15,X'S) H   ( 151,X'S) H   ( 152,X'S) H   ( 153,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                                                                             
;