Joining the rings: the preparation of 2- and 3-indenyl-triptycenes, and curious related processes.
Nikitin, Kirill; Müller-Bunz, Helge; Ortin, Yannick; McGlinchey, Michael J.; Organic & biomolecular chemistry 5 (2007) 1952–1960; doi:10.1039/b703437g

data_7151117
_publ_section_title
;
 Joining the rings: the preparation of 2- and 3-indenyl-triptycenes,
 and curious related processes.
;
_journal_issue                   12
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              1952
_journal_page_last               1960
_journal_paper_doi               10.1039/b703437g
_journal_volume                  5
_journal_year                    2007
_chemical_absolute_configuration unk
_chemical_formula_sum            'C23 H16'
_chemical_formula_weight         292.36
_space_group_IT_number           169
_symmetry_cell_setting           hexagonal
_symmetry_space_group_name_Hall  'P 61'
_symmetry_space_group_name_H-M   'P 61'
_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                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            6
_cell_length_a                   23.6218(16)
_cell_length_b                   23.6218(16)
_cell_length_c                   4.7492(7)
_cell_measurement_reflns_used    2684
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      18.78
_cell_measurement_theta_min      2.63
_cell_volume                     2295.0(4)
_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  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0406
_diffrn_reflns_av_sigmaI/netI    0.0297
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       4
_diffrn_reflns_limit_l_min       -4
_diffrn_reflns_number            6790
_diffrn_reflns_theta_full        18.85
_diffrn_reflns_theta_max         18.85
_diffrn_reflns_theta_min         1.00
_exptl_absorpt_coefficient_mu    0.072
_exptl_absorpt_correction_T_max  0.9979
_exptl_absorpt_correction_T_min  0.7956
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.269
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             924
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.03
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.839
_refine_diff_density_min         -0.197
_refine_diff_density_rms         0.117
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.376
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     224
_refine_ls_number_reflns         1200
_refine_ls_number_restraints     72
_refine_ls_restrained_S_all      1.338
_refine_ls_R_factor_all          0.0686
_refine_ls_R_factor_gt           0.0623
_refine_ls_shift/su_max          0.303
_refine_ls_shift/su_mean         0.007
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1276P)^2^+1.3048P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1986
_refine_ls_wR_factor_ref         0.2088
_reflns_number_gt                1122
_reflns_number_total             1200
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b703437g.txt
_cod_data_source_block           mjm155
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Hexagonal' changed to 'hexagonal'
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 
;
_cod_original_sg_symbol_H-M      P6(1)
_cod_database_code               7151117