Chemoenzymatic and enantiodivergent routes to 1,2-ring-fused bicyclo[2.2.2]octane and related tricyclic frameworks.
Austin, Kerrie A. B.; Elsworth, Jon D.; Banwell, Martin G.; Willis, Anthony C.; Organic & biomolecular chemistry 8 (2010) 751–754; doi:10.1039/b921600f

data_7153280
_publ_section_title
;
 Chemoenzymatic and enantiodivergent routes to 1,2-ring-fused
 bicyclo[2.2.2]octane and related tricyclic frameworks.
;
_journal_issue                   4
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              751
_journal_page_last               754
_journal_paper_doi               10.1039/b921600f
_journal_volume                  8
_journal_year                    2010
_chemical_absolute_configuration syn
_chemical_compound_source        local
_chemical_formula_moiety         'C16 H22 O3'
_chemical_formula_sum            'C16 H22 O3'
_chemical_formula_weight         262.35
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_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
_audit_creation_date             08-05-12
_audit_creation_method           CRYSTALS_ver_12.18
_audit_update_record
;
2008-05-12 - Report on C16 H22 O3
by Anthony C. Willis
for Kerrie Austin and Martin Banwell

2008-05-12 - passes checkcif tests with minor warnings

;
_cell_angle_alpha                90
_cell_angle_beta                 90.9585(16)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.3467(2)
_cell_length_b                   21.7077(6)
_cell_length_c                   10.3198(3)
_cell_measurement_reflns_used    78878
_cell_measurement_temperature    200
_cell_measurement_theta_max      25
_cell_measurement_theta_min      2.6
_cell_volume                     1421.58(7)
_computing_cell_refinement       'Denzo/Scalepack (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius BV, 1997)'
_computing_data_reduction        'Denzo/Scalepack (Otwinowski & Minor, 1997)'
_computing_molecular_graphics
;
ORTEP-II (Johnson 1976) in teXsan (MSC, 1992-1997)
;
_computing_publication_material  'CRYSTALS (Watkin et al 2003)'
_computing_structure_refinement  'CRYSTALS (Watkin et al 2003)'
_computing_structure_solution    'SIR92 (Altomare et al, 1994)'
_diffrn_ambient_temperature      200
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       ' \f and \w scans with CCD '
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.054
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            21145
_diffrn_reflns_theta_full        25.048
_diffrn_reflns_theta_max         25.048
_diffrn_reflns_theta_min         2.724
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  0.993
_exptl_absorpt_correction_T_min  0.979
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details
;
via Gaussian method (Coppens, 1970) implemented in maXus (2000)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.226
_exptl_crystal_density_meas      ?
_exptl_crystal_description       needle
_exptl_crystal_F_000             568
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.11
_refine_diff_density_min         -0.12
_refine_ls_abs_structure_details
;
The enantiomer has been assigned by reference to an unchanging chiral
centre in the synthetic procedure.
;
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.1875
_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     343
_refine_ls_number_reflns         2064
_refine_ls_number_restraints     1
_refine_ls_R_factor_all          0.0384
_refine_ls_R_factor_gt           0.0279
_refine_ls_shift/su_max          0.000469
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details
;
Method, part 1, Chebychev polynomial,
(Carruthers & Watkin, 1979, Prince, 1982)
[weight] = 1.0/[A~0~*T~0~(x)+A~1~*T~1~(x) ... +A~n-1~]*T~n-1~(x)]
where A~i~ are the Chebychev coefficients listed below and x= Fcalc/Fmax
Method = Robust Weighting (Prince, 1982)
W = [weight] * [1-(deltaF/6*sigmaF)^2^]^2^
A~i~ are:
0.733 0.166 0.518
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0358
_refine_ls_wR_factor_gt          0.0308
_refine_ls_wR_factor_ref         0.0308
_reflns_limit_h_max              7
_reflns_limit_h_min              -7
_reflns_limit_k_max              25
_reflns_limit_k_min              0
_reflns_limit_l_max              12
_reflns_limit_l_min              0
_reflns_number_gt                2064
_reflns_number_total             2589
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   3.49
_oxford_diffrn_Wilson_scale      0.95
_oxford_refine_ls_scale          1.0034(17)
_oxford_structure_analysis_title '5121139 ban0809'
_cod_data_source_file            b921600f.txt
_cod_data_source_block           ban0809
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' 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_sg_symbol_H-M      'P 1 21 1 '
_cod_database_code               7153280