(<i>S</i>)-(–)-2,3-Methylenedioxy-8-oxoberbine
Gzella, Andrzej; Chrzanowska, Maria; Dreas, Agnieszka; Acta Crystallographica Section E 61 (2005) o4001–o4003; doi:10.1107/S1600536805035609

data_2207671
_publ_section_title
;
 (<i>S</i>)-(--)-2,3-Methylenedioxy-8-oxoberbine
;
_journal_coeditor_code           TK6277
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o4001
_journal_page_last               o4003
_journal_paper_doi               10.1107/S1600536805035609
_journal_volume                  61
_journal_year                    2005
_chemical_formula_iupac          'C18 H15 N O3'
_chemical_formula_moiety         'C18 H15 N O3'
_chemical_formula_sum            'C18 H15 N O3'
_chemical_formula_weight         293.31
_chemical_name_systematic
;
(S)-(-)-2,3-methylenedioxy-8-oxoberbine
;
_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           SHELXL97
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.3551(19)
_cell_length_b                   9.2458(12)
_cell_length_c                   20.332(3)
_cell_measurement_reflns_used    56
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.4
_cell_measurement_theta_min      10.1
_cell_volume                     1382.7(4)
_computing_cell_refinement       'KM-4 Software'
_computing_data_collection       'KM-4 Software (Kuma, 1996)'
_computing_data_reduction        'KM-4 Software'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Kuma KM-4'
_diffrn_measurement_method       \w/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.028
_diffrn_reflns_av_sigmaI/netI    0.021
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            2750
_diffrn_reflns_theta_full        70.1
_diffrn_reflns_theta_max         70.1
_diffrn_reflns_theta_min         4.4
_diffrn_standards_decay_%        1.4
_diffrn_standards_interval_count 100
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    0.785
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.409
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       lath
_exptl_crystal_F_000             616
_exptl_crystal_size_max          0.55
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.16
_refine_diff_density_min         -0.11
_refine_ls_abs_structure_details 'Flack (1983)'
_refine_ls_abs_structure_Flack   0.0(2)
_refine_ls_extinction_coef       0.0042(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 1997)'
_refine_ls_goodness_of_fit_ref   1.07
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     260
_refine_ls_number_reflns         2554
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.07
_refine_ls_R_factor_all          0.040
_refine_ls_R_factor_gt           0.031
_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^)+(0.0547P)^2^+0.0905P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.080
_refine_ls_wR_factor_ref         0.085
_reflns_number_gt                2284
_reflns_number_total             2554
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            tk6277.cif
_cod_data_source_block           I
_cod_database_code               2207671