The use of the triptycene framework for observing O⋯CO molecular interactions
Lari, Alberth; Pitak, Mateusz B.; Coles, Simon J.; Bresco, Emma; Belser, Peter; Beyeler, Andreas; Pilkington, Melanie; Wallis, John D.; CrystEngComm 13 (2011) 6978–; doi:10.1039/c1ce05955f

data_7206860
_publ_section_title
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 The use of the triptycene framework for observing O&#x22EF;C&#xE001;O
 molecular interactions
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_journal_issue                   23
_journal_name_full               CrystEngComm
_journal_page_first              6978
_journal_paper_doi               10.1039/c1ce05955f
_journal_volume                  13
_journal_year                    2011
_chemical_formula_sum            'C26 H22 O6'
_chemical_formula_weight         430.44
_chemical_name_systematic
;
9,10-Bis(1',3'-dioxolan-2'-yl)-1,4,4a,9a-tetrahydroanthracen-1,4-dione
cpd 22
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 100.008(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   21.837(2)
_cell_length_b                   9.2974(10)
_cell_length_c                   19.231(2)
_cell_measurement_reflns_used    3502
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.27
_cell_measurement_theta_min      2.38
_cell_volume                     3845.0(7)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_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  0.0335
_diffrn_reflns_av_sigmaI/netI    0.0392
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -29
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            12576
_diffrn_reflns_theta_full        28.35
_diffrn_reflns_theta_max         28.35
_diffrn_reflns_theta_min         2.39
_exptl_absorpt_coefficient_mu    0.106
_exptl_absorpt_correction_T_max  0.9895
_exptl_absorpt_correction_T_min  0.9691
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   Bruker-SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.487
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1808
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.794
_refine_diff_density_min         -0.267
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.022
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     289
_refine_ls_number_reflns         4773
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.022
_refine_ls_R_factor_all          0.0580
_refine_ls_R_factor_gt           0.0426
_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^)+(0.0567P)^2^+3.4353P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1058
_refine_ls_wR_factor_ref         0.1149
_reflns_number_gt                3746
_reflns_number_total             4773
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1ce05955f.txt
_cod_data_source_block           c:\tript2ee
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'C2/c '
_cod_database_code               7206860