Diethyl 4,8-dioxo-2,6-diphenyl-1,3,5,7-tetrahydro-2,3a,4a,6,7a,8a-hexaazacyclopenta[<i>def</i>]fluorene-8b,8c-dicarboxylate
Yin, Guo-Dong; Chen, Yun-Feng; Zhou, Bao-Han; Wu, An-Xin; Acta Crystallographica Section E 61 (2005) o2467–o2469; doi:10.1107/S1600536805021525

data_2206595
_publ_section_title
;Diethyl
 4,8-dioxo-2,6-diphenyl-1,3,5,7-tetrahydro-2,3a,4a,6,7a,8a-hexaazacyclopenta[<i>def</i>]fluorene-8b,8c-dicarboxylate
;
_journal_coeditor_code           WW6409
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2467
_journal_page_last               o2469
_journal_paper_doi               10.1107/S1600536805021525
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'C26 H28 N6 O6'
_chemical_formula_moiety         'C26 H28 N6 O6'
_chemical_formula_sum            'C26 H28 N6 O6'
_chemical_formula_weight         520.54
_chemical_name_systematic
;
Diethyl 4,8-dioxo-2,6-diphenyl-1,3,5,7-tetrahydro-2,3a,4a,6,7a,8a-
hexaazacyclopenta[def]fluorene-8b,8c-dicarboxylate
;
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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            8
_cell_length_a                   18.0634(16)
_cell_length_b                   15.1108(13)
_cell_length_c                   18.8377(17)
_cell_measurement_reflns_used    5199
_cell_measurement_temperature    292(2)
_cell_measurement_theta_max      22.13
_cell_measurement_theta_min      2.63
_cell_volume                     5141.8(8)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 1997)'
_computing_data_reduction        'SAINT (Bruker, 1999)'
_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 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  0.0465
_diffrn_reflns_av_sigmaI/netI    0.0309
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -21
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            27955
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.06
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.098
_exptl_absorpt_correction_T_max  0.9712
_exptl_absorpt_correction_T_min  0.9619
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1997)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.345
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2192
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.386
_refine_diff_density_min         -0.336
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.178
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     355
_refine_ls_number_reflns         4521
_refine_ls_number_restraints     8
_refine_ls_restrained_S_all      1.190
_refine_ls_R_factor_all          0.0790
_refine_ls_R_factor_gt           0.0574
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0891P)^2^+1.3901P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1528
_refine_ls_wR_factor_ref         0.1805
_reflns_number_gt                3607
_reflns_number_total             4521
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ww6409.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
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 'Orthorhombic' changed to
'orthorhombic' 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_database_code               2206595
_cod_database_fobs_code          2206595