8b,8c-Diphenyl-2,6-dioxa-3a,4a,7a,8a-tetraazaperhydrocyclopenta[<i>def</i>]fluorene-4,8-dione
Meng Gao; Jing-Jing Sun; Acta Crystallographica Section E 63 (2007) o3480–o3480; doi:10.1107/S1600536807029467

data_2214892
_publ_section_title
8b,8c-Diphenyl-2,6-dioxa-3a,4a,7a,8a-tetraazaperhydrocyclopenta[<i>def</i>]fluorene-4,8-dione
_journal_coeditor_code           WN2157
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o3480
_journal_page_last               o3480
_journal_paper_doi               10.1107/S1600536807029467
_journal_volume                  63
_journal_year                    2007
_chemical_formula_iupac          'C20 H18 N4 O4'
_chemical_formula_moiety         'C20 H18 N4 O4'
_chemical_formula_sum            'C20 H18 N4 O4'
_chemical_formula_weight         378.39
_chemical_name_systematic
;
8b,8c-Diphenyl-2,6-dioxa-3a,4a,7a,8a-tetraazaperhydrocyclopenta[def]fluorene-
4,8-dione
;
_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           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 91.695(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   14.558(3)
_cell_length_b                   14.870(3)
_cell_length_c                   16.711(3)
_cell_measurement_reflns_used    1636
_cell_measurement_temperature    292(2)
_cell_measurement_theta_max      19.14
_cell_measurement_theta_min      2.28
_cell_volume                     3616.0(12)
_computing_cell_refinement       'SAINT (Bruker, 2001)'
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXTL (Bruker, 2001)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      292(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type
;
Bruker SMART APEX CCD area-detector
;
_diffrn_measurement_method       '\f and \w'
_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  0.1031
_diffrn_reflns_av_sigmaI/netI    0.0837
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            13181
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.96
_exptl_absorpt_coefficient_mu    0.099
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.390
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1584
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.209
_refine_diff_density_min         -0.187
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.801
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     505
_refine_ls_number_reflns         3192
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      0.801
_refine_ls_R_factor_all          0.0793
_refine_ls_R_factor_gt           0.0444
_refine_ls_shift/su_max          0.031
_refine_ls_shift/su_mean         0.007
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0298P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0691
_refine_ls_wR_factor_ref         0.0791
_reflns_number_gt                1976
_reflns_number_total             3192
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            wn2157.cif
_cod_data_source_block           I
_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_enum 1527 2010-12-29 10:47:43Z saulius 

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_cell_volume        3616.2(11)
_cod_original_sg_symbol_Hall     C_-2yc
_cod_original_sg_symbol_H-M      'C c'
_cod_database_code               2214892
_cod_database_fobs_code          2214892