Investigation of the asymmetric ionic Diels?Alder reaction for the synthesis of cis-decalins
Anderson, James C.; Blake, Alexander J.; Graham, Jonathan P.; Wilson, Claire; Organic & Biomolecular Chemistry 1 (2003) 2877–; doi:10.1039/b305116a

data_7151477
_publ_section_title
;
 Investigation of the asymmetric ionic Diels?Alder reaction for the
 synthesis of cis-decalins
;
_journal_issue                   16
_journal_name_full               'Organic &amp;  Biomolecular Chemistry'
_journal_page_first              2877
_journal_paper_doi               10.1039/b305116a
_journal_volume                  1
_journal_year                    2003
_chemical_formula_moiety         'C16 H26 O2'
_chemical_formula_sum            'C16 H26 O2'
_chemical_formula_weight         250.37
_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
'sp2 Me groups from delta-F; others placed geometrically'
_atom_sites_solution_primary     direct
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.8589(11)
_cell_length_b                   10.727(2)
_cell_length_c                   20.398(3)
_cell_measurement_reflns_used    4714
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      28.75
_cell_measurement_theta_min      2.75
_cell_volume                     1500.8(4)
_computing_cell_refinement       'Bruker SAINT version 6.02a (Bruker, 2000)'
_computing_data_collection       'Bruker SMART version 5.624 (Bruker, 2001)'
_computing_data_reduction        'Bruker SAINT; Bruker SHELXTL (Bruker, 1997)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'SHELXL-97; PLATON (Spek, 2002)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.907
_diffrn_measurement_device_type  'Bruker SMART1000 CCD area detector'
_diffrn_measurement_method       omega
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.081
_diffrn_reflns_av_sigmaI/netI    0.018
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            9187
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         28.75
_diffrn_reflns_theta_min         2.00
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.071
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.108
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'trigonal prism'
_exptl_crystal_F_000             552
_exptl_crystal_size_max          0.80
_exptl_crystal_size_mid          0.55
_exptl_crystal_size_min          0.29
_refine_diff_density_max         0.25
_refine_diff_density_min         -0.19
_refine_diff_density_rms         0.04
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   'not reliably determined'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.06
_refine_ls_hydrogen_treatment    'rigid rotating group; riding model'
_refine_ls_matrix_type           full
_refine_ls_number_parameters     165
_refine_ls_number_reflns         2045
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.06
_refine_ls_R_factor_all          0.0485
_refine_ls_R_factor_gt           0.0423
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.087P)^2^+0.018P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.115
_refine_ls_wR_factor_ref         0.120
_reflns_number_gt                1787
_reflns_number_total             2067
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b305116a.txt
_cod_data_source_block           compound8
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
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_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_atom_sites_solution_primary' value 'direct methods' was changed to
'direct'.

Automatic conversion script
Id: cif_fix_values 6452 2018-10-05 10:23:21Z andrius 
;
_cod_original_cell_volume        1500.7(7)
_cod_database_code               7151477