Catalyst-controlled regio- and stereoselective synthesis of diverse 12H-6,12-methanodibenzo[d,g][1,3]dioxocines.
Xia, Likai; Cai, Hongyun; Lee, Yong Rok; Organic & biomolecular chemistry 12 (2014) 4386–4396; doi:10.1039/c4ob00691g

data_7153835
_publ_section_title
;
 Catalyst-controlled regio- and stereoselective synthesis of diverse
 12H-6,12-methanodibenzo[d,g][1,3]dioxocines.
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_journal_issue                   25
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              4386
_journal_page_last               4396
_journal_paper_doi               10.1039/c4ob00691g
_journal_volume                  12
_journal_year                    2014
_chemical_formula_moiety         'C28 H20 O4'
_chemical_formula_sum            'C28 H20 O4'
_chemical_formula_weight         420.44
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXTL
_cell_angle_alpha                90.00
_cell_angle_beta                 95.137(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   23.832(2)
_cell_length_b                   11.4009(10)
_cell_length_c                   7.7827(7)
_cell_measurement_reflns_used    2687
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      26.42
_cell_measurement_theta_min      3.13
_cell_volume                     2106.1(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1056
_diffrn_reflns_av_sigmaI/netI    0.0992
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            7630
_diffrn_reflns_theta_full        28.31
_diffrn_reflns_theta_max         28.31
_diffrn_reflns_theta_min         1.72
_exptl_absorpt_coefficient_mu    0.088
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.326
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Needle
_exptl_crystal_F_000             880
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.233
_refine_diff_density_min         -0.296
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.993
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     290
_refine_ls_number_reflns         3544
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      0.993
_refine_ls_R_factor_all          0.0980
_refine_ls_R_factor_gt           0.0568
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0729P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1256
_refine_ls_wR_factor_ref         0.1677
_reflns_number_gt                2153
_reflns_number_total             3544
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ob00691g2.cif
_cod_data_source_block           No1
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 

 Adding full bibliography for 7153835--7153836.cif.
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_cod_original_sg_symbol_H-M      Cc
_cod_database_code               7153835