Diethyl 2,6-dibenzyl-4,8-dioxotetrahydro-2,3a,4a,6,7a,8a-hexaazacyclopenta[<i>def</i>]fluorene-8b,8c-dicarboxylate
Li, Yi-Tao; Wang, Zhiguo; Yin, Guodong; Wu, An-Xin; Acta Crystallographica Section E 61 (2005) o2187–o2188; doi:10.1107/S1600536805018775

data_2206195
_publ_section_title
;Diethyl
 2,6-dibenzyl-4,8-dioxotetrahydro-2,3a,4a,6,7a,8a-hexaazacyclopenta[<i>def</i>]fluorene-8b,8c-dicarboxylate
;
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2187
_journal_page_last               o2188
_journal_paper_doi               10.1107/S1600536805018775
_journal_volume                  61
_journal_year                    2005
_chemical_formula_moiety         'C28 H32 N6 O6'
_chemical_formula_sum            'C28 H32 N6 O6'
_chemical_formula_weight         548.60
_chemical_name_systematic
;
2,6-Dibenzyl-4,8-dioxo-tetrahydro-2,3a,4a,6,7a,8a-hexaaza-cyclopenta[def]
fluorene-8b,8c-dicarboxylic acid diethyl ester
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                95.0080(10)
_cell_angle_beta                 101.4150(10)
_cell_angle_gamma                92.7550(10)
_cell_formula_units_Z            2
_cell_length_a                   7.6177(6)
_cell_length_b                   12.2882(9)
_cell_length_c                   14.9197(11)
_cell_measurement_reflns_used    4320
_cell_measurement_temperature    292(2)
_cell_measurement_theta_max      26.42
_cell_measurement_theta_min      2.73
_cell_volume                     1360.69(18)
_computing_cell_refinement       SMART
_computing_data_collection       'SMART (Bruker, 2000)'
_computing_data_reduction        'SAINT (Bruker, 2000)'
_computing_molecular_graphics    'SHELXTL (Bruker, 2000)'
_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 0.981
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'Bruker SMART CCD'
_diffrn_measurement_method       '\w and \f'
_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  0.0207
_diffrn_reflns_av_sigmaI/netI    0.0305
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            9666
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.67
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.096
_exptl_absorpt_correction_T_max  0.981
_exptl_absorpt_correction_T_min  0.972
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.339
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             580
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.759
_refine_diff_density_min         -0.415
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     359
_refine_ls_number_reflns         4689
_refine_ls_number_restraints     14
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.0861
_refine_ls_R_factor_gt           0.0724
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1005P)^2^+1.0611P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1903
_refine_ls_wR_factor_ref         0.2041
_reflns_number_gt                3734
_reflns_number_total             4689
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            hb6223.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 'Triclinic' changed to 'triclinic'
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_sg_symbol_Hall     '-P 1 '
_cod_database_code               2206195
_cod_database_fobs_code          2206195