(8a<i>S</i>)-8,8a-Dihydrofuro[3,2-<i>f</i>]indolizine-6,9(4<i>H</i>,7<i>H</i>)-dione
Švorc, Ľubomír; Vrábel, Viktor; Kožíšek, Jozef; Marchalín, Štefan; Šafář, Peter; Acta Crystallographica Section E 63 (2007) o3180–o3181; doi:10.1107/S1600536807028176

data_2214187
_publ_section_title
(8a<i>S</i>)-8,8a-Dihydrofuro[3,2-<i>f</i>]indolizine-6,9(4<i>H</i>,7<i>H</i>)-dione
_journal_coeditor_code           FJ2027
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o3180
_journal_page_last               o3181
_journal_paper_doi               10.1107/S1600536807028176
_journal_volume                  63
_journal_year                    2007
_chemical_formula_iupac          'C10 H9 N O3'
_chemical_formula_moiety         'C10 H9 N O3'
_chemical_formula_sum            'C10 H9 N O3'
_chemical_formula_weight         191.18
_chemical_name_systematic
;
(8aS)-8,8a-Dihydrofuro[3,2-f]indolizine-6,9(4H,7H)-dione
;
_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                   6.87710(10)
_cell_length_b                   7.21980(10)
_cell_length_c                   17.7271(2)
_cell_measurement_reflns_used    16436
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      29.4864
_cell_measurement_theta_min      3.0370
_cell_volume                     880.17(2)
_computing_cell_refinement
;
CrysAlis RED (Oxford Diffraction, 2006)
;
_computing_data_collection
;
CrysAlis CCD (Oxford Diffraction, 2006)
;
_computing_data_reduction
;
CrysAlis RED
;
_computing_molecular_graphics    'DIAMOND (Brandenburg, 2002)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      298(2)
_diffrn_detector_area_resol_mean 10.4340
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Oxford Diffraction Gemini R CCD'
_diffrn_measurement_method
;
Rotation method data acquisition using \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  0.0267
_diffrn_reflns_av_sigmaI/netI    0.0121
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            35953
_diffrn_reflns_theta_full        26.56
_diffrn_reflns_theta_max         29.56
_diffrn_reflns_theta_min         2.30
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.108
_exptl_absorpt_correction_T_max  0.9925
_exptl_absorpt_correction_T_min  0.9430
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details   '(Clark & Reid, 1995)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.443
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             400
_exptl_crystal_size_max          0.51
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.141
_refine_diff_density_min         -0.153
_refine_ls_extinction_coef       0.021(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL97
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     128
_refine_ls_number_reflns         1409
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0565
_refine_ls_R_factor_gt           0.0419
_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^)+(0.0618P)^2^+0.1705P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1087
_refine_ls_wR_factor_ref         0.1197
_reflns_number_gt                1110
_reflns_number_total             1409
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            fj2027.cif
_cod_data_source_block           I
_cod_database_code               2214187
_cod_database_fobs_code          2214187