Nanochannel array within a multilayered network of a planarized dehydro[24]annulene.
Suzuki, Mitsuharu; Comito, Angelo; Khan, Saeed I.; Rubin, Yves; Organic letters 12 (2010) 2346–2349; doi:10.1021/ol1006967

data_1502975
_publ_section_title
;
 Nanochannel array within a multilayered network of a planarized
 dehydro[24]annulene.
;
_journal_issue                   10
_journal_name_full               'Organic letters'
_journal_page_first              2346
_journal_page_last               2349
_journal_paper_doi               10.1021/ol1006967
_journal_volume                  12
_journal_year                    2010
_chemical_formula_moiety         'C24 H8'
_chemical_formula_sum            'C24 H8'
_chemical_formula_weight         296.30
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           36
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'C 2c -2c'
_symmetry_space_group_name_H-M   'C c m 21'
_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                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.276(8)
_cell_length_b                   20.80(2)
_cell_length_c                   9.536(9)
_cell_measurement_reflns_used    27
_cell_measurement_temperature    156(2)
_cell_measurement_theta_max      12
_cell_measurement_theta_min      4
_cell_volume                     1642(3)
_computing_cell_refinement       'Least (UCLA Package)'
_computing_data_collection       'Collect (UCLA Package)'
_computing_data_reduction        'Reduce (UCLA Package)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      156(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Picker (Crystal Logic)'
_diffrn_measurement_method       'profile data from \q/2\q 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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0783
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            1382
_diffrn_reflns_theta_full        29.99
_diffrn_reflns_theta_max         29.99
_diffrn_reflns_theta_min         1.96
_diffrn_standards_decay_%        -0.1
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.068
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.199
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             608
_exptl_crystal_size_max          .40
_exptl_crystal_size_mid          .30
_exptl_crystal_size_min          .20
_refine_diff_density_max         0.205
_refine_diff_density_min         -0.184
_refine_diff_density_rms         0.041
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     126
_refine_ls_number_reflns         1300
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0874
_refine_ls_R_factor_gt           0.0434
_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^)+(0.0000P)^2^+0.2620P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0883
_refine_ls_wR_factor_ref         0.1049
_reflns_number_gt                845
_reflns_number_total             1300
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol1006967_si_001.cif
_cod_data_source_block           1a
_cod_original_cell_volume        1641(3)
_cod_original_sg_symbol_Hall     'C 2c -2c '
_cod_original_sg_symbol_H-M      Ccm2(1)
_cod_database_code               1502975