Diethyl 2,6-dicyclohexyl-4,8-dioxo-2,2,3,6,7-tetrahydro-1<i>H</i>,5<i>H</i>-2,3a,4a,6,7a,8a-hexaazacyclopenta[<i>def</i>]fluorene-8b,8c-dicarboxylate
Li, Yi-Tao; Zhao, BaoHan; Yin, Guo-Dong; Wu, An-Xin; Acta Crystallographica Section E 61 (2005) o3368–o3370; doi:10.1107/S160053680502948X

data_2206910
_publ_section_title
;Diethyl
 2,6-dicyclohexyl-4,8-dioxo-2,2,3,6,7-tetrahydro-1<i>H</i>,5<i>H</i>-2,3a,4a,6,7a,8a-hexaazacyclopenta[<i>def</i>]fluorene-8b,8c-dicarboxylate
;
_journal_coeditor_code           CI6643
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o3368
_journal_page_last               o3370
_journal_paper_doi               10.1107/S160053680502948X
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'C26 H40 N6 O6'
_chemical_formula_moiety         'C26 H40 N6 O6'
_chemical_formula_sum            'C26 H40 N6 O6'
_chemical_formula_weight         532.64
_chemical_name_systematic
;
Diethyl
2,6-dicyclohexyl-4,8-dioxo-22,3,6,7-tetrahydro-1H,5H-2,3a,4a,6,7a,8a-
hexaazacyclopenta[def]fluorene-8b,8c-dicarboxylate
;
_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                78.913(2)
_cell_angle_beta                 79.686(2)
_cell_angle_gamma                74.259(2)
_cell_formula_units_Z            2
_cell_length_a                   7.9337(8)
_cell_length_b                   13.0996(13)
_cell_length_c                   13.9361(14)
_cell_measurement_reflns_used    1576
_cell_measurement_temperature    292(2)
_cell_measurement_theta_max      21.54
_cell_measurement_theta_min      2.38
_cell_volume                     1355.6(2)
_computing_cell_refinement       'SAINT (Bruker, 2000)'
_computing_data_collection       'SMART (Bruker, 2000)'
_computing_data_reduction        SAINT
_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 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  0.0222
_diffrn_reflns_av_sigmaI/netI    0.0514
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            6851
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.63
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.094
_exptl_absorpt_correction_T_max  0.9925
_exptl_absorpt_correction_T_min  0.9634
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1997)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.305
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             572
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.364
_refine_diff_density_min         -0.290
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     345
_refine_ls_number_reflns         4685
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0953
_refine_ls_R_factor_gt           0.0653
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0926P)^2^+0.2271P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1662
_refine_ls_wR_factor_ref         0.1879
_reflns_number_gt                3120
_reflns_number_total             4685
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ci6643.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_database_code               2206910
_cod_database_fobs_code          2206910