All-Benzene Carbon Nanocages: Size-Selective Synthesis, Photophysical Properties, and Crystal Structure.
Matsui, Katsuma; Segawa, Yasutomo; Itami, Kenichiro; Journal of the American Chemical Society  (2014) 141107064945005–; doi:10.1021/ja509880v

data_4122899
_publ_section_title
;
 All-Benzene Carbon Nanocages: Size-Selective Synthesis, Photophysical
 Properties, and Crystal Structure.
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              141107064945005
_journal_paper_doi               10.1021/ja509880v
_journal_year                    2014
_chemical_formula_sum            'C96 H77 O3'
_chemical_formula_weight         1278.58
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 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                   15.657(9)
_cell_length_b                   20.034(11)
_cell_length_c                   26.302(15)
_cell_measurement_reflns_used    7528
_cell_measurement_temperature    103(2)
_cell_measurement_theta_max      25.1756
_cell_measurement_theta_min      3.0391
_cell_volume                     8250(8)
_computing_cell_refinement       'RIGAKU CrystalClear'
_computing_data_collection       'RIGAKU CrystalClear'
_computing_data_reduction        'RIGAKU CrystalClear'
_computing_molecular_graphics    ORTEP-III
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      103(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type
;
Saturn70 CCD (4x4 bin mode) with MicroMax-007
;
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.1877
_diffrn_reflns_av_sigmaI/netI    0.1510
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            91273
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.03
_exptl_absorpt_coefficient_mu    0.061
_exptl_absorpt_correction_T_max  0.9994
_exptl_absorpt_correction_T_min  0.9970
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.029
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             2708
_exptl_crystal_size_max          0.05
_exptl_crystal_size_mid          0.02
_exptl_crystal_size_min          0.01
_refine_diff_density_max         1.017
_refine_diff_density_min         -0.434
_refine_diff_density_rms         0.125
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -2(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.253
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     988
_refine_ls_number_reflns         14488
_refine_ls_number_restraints     440
_refine_ls_restrained_S_all      1.247
_refine_ls_R_factor_all          0.2632
_refine_ls_R_factor_gt           0.1884
_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^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3944
_refine_ls_wR_factor_ref         0.4470
_reflns_number_gt                7310
_reflns_number_total             14488
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja509880v_si_002.cif
_cod_data_source_block           cage
_cod_depositor_comments
;
The following automatic conversions were performed:
'_atom_site_symetry_multiplicity' tag replaced with
'_atom_site_symmetry_multiplicity'.

Automatic conversion script
Id: cif_correct_tags 1440 2010-10-19 06:21:57Z saulius 
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_cod_original_sg_symbol_H-M      P212121
_cod_database_code               4122899