6a-Nitro-6-(2,2,7,7-tetramethyltetrahydro-3a<i>H</i>-bis[1,3]dioxolo[4,5-<i>b</i>:4',5'-<i>d</i>]pyran-5-yl)-6a,6b,7,8,9,11a-hexahydro-6<i>H</i>-spiro[chromeno[3,4-<i>a</i>]pyrrolizine-11,11'-indeno[1,2-<i>b</i>]quinoxaline]
Anuradha, T.; Naga Siva Rao, J.; Seshadri, P. R.; Raghunathan, R.; Acta Crystallographica Section E 70 (2014) o38–o39; doi:10.1107/S1600536813032467

data_2239095
_publ_section_title
;
 6a-Nitro-6-(2,2,7,7-tetramethyltetrahydro-3a<i>H</i>-bis[1,3]dioxolo[4,5-<i>b</i>:4',5'-<i>d</i>]pyran-5-yl)-6a,6b,7,8,9,11a-hexahydro-6<i>H</i>-spiro[chromeno[3,4-<i>a</i>]pyrrolizine-11,11'-indeno[1,2-<i>b</i>]quinoxaline]
;
_journal_issue                   1
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o38
_journal_page_last               o39
_journal_paper_doi               10.1107/S1600536813032467
_journal_volume                  70
_journal_year                    2014
_chemical_formula_iupac          'C39 H38 N4 O8'
_chemical_formula_moiety         'C39 H38 N4 O8'
_chemical_formula_sum            'C39 H38 N4 O8'
_chemical_formula_weight         690.73
_chemical_name_common            quinoxaline-indene
_chemical_name_systematic
6a-Nitro-6-(2,2,7,7-tetramethyltetrahydro-3a<i>H</i>-bis[1,3]dioxolo[4,5-<i>b</i>:4',5'-<i>d</i>]pyran-5-yl)-6a,6b,7,8,9,11a-hexahydro-6<i>H</i>-spiro[chromeno[3,4-<i>a</i>]pyrrolizine-11,11'-indeno[1,2-<i>b</i>]quinoxaline]
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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            4
_cell_length_a                   11.3150(9)
_cell_length_b                   15.629(2)
_cell_length_c                   19.419(2)
_cell_measurement_reflns_used    8626
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.4
_cell_measurement_theta_min      1.7
_cell_volume                     3434.1(6)
_computing_cell_refinement       'SAINT (Bruker, 2008)'
_computing_data_collection       'APEX2 (Bruker, 2008)'
_computing_data_reduction        'SAINT (Bruker, 2008)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 2012)'
_computing_publication_material
'SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2009) and publCIF (Westrip, 2010)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker Kappa APEXII CCD'
_diffrn_measurement_method       '\w and \f scan'
_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  0.0592
_diffrn_reflns_av_sigmaI/netI    0.0905
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            15819
_diffrn_reflns_theta_full        25.99
_diffrn_reflns_theta_max         25.99
_diffrn_reflns_theta_min         1.67
_exptl_absorpt_coefficient_mu    0.094
_exptl_absorpt_correction_T_max  0.9906
_exptl_absorpt_correction_T_min  0.9814
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2004)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.336
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1456
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.170
_refine_diff_density_min         -0.200
_refine_ls_abs_structure_details 'Flack (1983), 2933 Friedel pairs'
_refine_ls_abs_structure_Flack   0.30(13)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.965
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     460
_refine_ls_number_reflns         6671
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.965
_refine_ls_R_factor_all          0.1124
_refine_ls_R_factor_gt           0.0499
_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^)+(0.0470P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1015
_refine_ls_wR_factor_ref         0.1238
_reflns_number_gt                3789
_reflns_number_total             6671
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            im2440sup1.cf
_cod_data_source_block           I
_cod_original_cell_volume        3434.0(6)
_cod_database_code               2239095
_cod_database_fobs_code          2239095