Diels–Alder adducts of medium-ring carbocyclic dienes prepared by rearrangement of catalytically generated cyclic oxonium ylides
Wilson, Claire; Clark, J. Stephen; Bate, Andrea L.; Blake, Alexander J.; Grinter, Trevor; Teat, Simon J.; Acta Crystallographica Section C 57 (2001) 1326–1329; doi:10.1107/S0108270101013440

data_2012320
_publ_section_title
;
 Diels--Alder adducts of medium-ring carbocyclic dienes prepared by
 rearrangement of catalytically generated cyclic oxonium ylides
;
_journal_issue                   11
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1326
_journal_page_last               1329
_journal_paper_doi               10.1107/S0108270101013440
_journal_volume                  57
_journal_year                    2001
_chemical_formula_iupac          'C16 H20 O6'
_chemical_formula_moiety         'C16 H20 O6'
_chemical_formula_sum            'C16 H20 O6'
_chemical_formula_weight         308.32
_chemical_name_systematic
;
Dimethyl (4aS*,6S*)-6-methoxy-7-oxo-4a,5,6,7,8,9-hexahydro-2H-
benzocycloheptene-3,4-dicarboxylate
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_audit_creation_method           SHELXL97
_cell_angle_alpha                69.955(2)
_cell_angle_beta                 83.957(2)
_cell_angle_gamma                79.806(2)
_cell_formula_units_Z            2
_cell_length_a                   7.4878(9)
_cell_length_b                   10.1793(12)
_cell_length_c                   11.0220(13)
_cell_measurement_reflns_used    5947
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      28.71
_cell_measurement_theta_min      2.39
_cell_volume                     775.85(16)
_computing_cell_refinement       'SAINT (Bruker, 2000)'
_computing_data_collection       'SMART (Bruker, 1999)'
_computing_data_reduction        'SAINT and SHELXTL (Bruker, 1997)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full .977
_diffrn_measured_fraction_theta_max .895
_diffrn_measurement_device_type  'Bruker SMART CCD area-detector'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     .71073
_diffrn_reflns_av_R_equivalents  .024
_diffrn_reflns_av_sigmaI/netI    .014
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            9181
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         28.7
_diffrn_reflns_theta_min         2.0
_diffrn_standards_decay_%        none
_exptl_absorpt_coefficient_mu    .101
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.320
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             328
_exptl_crystal_size_max          .5
_exptl_crystal_size_mid          .3
_exptl_crystal_size_min          .3
_refine_diff_density_max         .34
_refine_diff_density_min         -.20
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     202
_refine_ls_number_reflns         3597
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          .040
_refine_ls_R_factor_gt           .035
_refine_ls_shift/su_max          .001
_refine_ls_shift/su_mean         .000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.056P)^2^+0.1526P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         .100
_reflns_number_gt                3148
_reflns_number_total             3597
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            gg1070.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_geom_torsion_publ_flag' value 'Y' changed to 'y'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29 (2
times).

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

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
_cod_database_code               2012320
_cod_database_fobs_code          2012320