Crystal structure of 2,6-bis(3-methylpyridinyl)hexahydro-4,8-ethenopyrrolo-[3,4-f]isoindole-1,3,5,7(2H,6H)-tetrone, C24H20N4O4
Liu, Zhi-Min; Zeitschrift für Kristallographie - New Crystal Structures 231 (2016) 551–552; doi:10.1515/ncrs-2015-0185

data_8106937
_publ_section_title
;
 Crystal structure of
 2,6-bis(3-methylpyridinyl)hexahydro-4,8-ethenopyrrolo-[3,4-f]isoindole-1,3,5,7(2H,6H)-tetrone,
 C24H20N4O4
;
_journal_issue                   2
_journal_name_full
'Zeitschrift f\"ur Kristallographie - New Crystal Structures'
_journal_page_first              551
_journal_page_last               552
_journal_paper_doi               10.1515/ncrs-2015-0185
_journal_volume                  231
_journal_year                    2016
_chemical_formula_moiety         'C24 H20 N4 O4'
_chemical_formula_sum            'C24 H20 N4 O4'
_chemical_formula_weight         428.44
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   23.942(5)
_cell_length_b                   12.3661(14)
_cell_length_c                   6.823(3)
_cell_measurement_reflns_used    4819
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      29.6819
_cell_measurement_theta_min      2.8272
_cell_volume                     2020.1(10)
_computing_cell_refinement       'Bruker FRAMBO'
_computing_data_collection       'Bruker FRAMBO'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014/6 (Sheldrick, 2014)'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      153(2)
_diffrn_detector_area_resol_mean 8
_diffrn_measurement_device_type  'multiwire proportional'
_diffrn_measurement_method       'phi and omega scans'
_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  0.1777
_diffrn_reflns_av_sigmaI/netI    0.1361
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       -22
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            10942
_diffrn_reflns_theta_max         27.87
_diffrn_reflns_theta_min         3.04
_exptl_absorpt_coefficient_mu    0.098
_exptl_absorpt_correction_T_max  0.9902
_exptl_absorpt_correction_T_min  0.9854
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2004)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.409
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             896
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.146
_refine_diff_density_min         -0.153
_refine_diff_density_rms         0.041
_refine_ls_abs_structure_details
;
 Flack x determined using 753 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.2(10)
_refine_ls_extinction_coef       0.0136(16)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.179
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     289
_refine_ls_number_reflns         4287
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.179
_refine_ls_R_factor_all          0.0754
_refine_ls_R_factor_gt           0.0457
_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^)+(0.1165P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0847
_refine_ls_wR_factor_ref         0.0963
_reflns_number_gt                2395
_reflns_number_total             4287
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            suppl_ncrs-2015-0185_suppl.cif
_cod_data_source_block           1
_cod_original_cell_volume        2020.1(9)
_cod_original_sg_symbol_Hall     'P 2c -2n '
_cod_original_sg_symbol_H-M      'Pna2(1) '
_cod_database_code               8106937
_shelxl_version_number           2014/6
_shelx_res_checksum              6935
_shelx_hkl_checksum              42918