2-Bromo-1,6,6-trimethyl-6,7,8,9-tetrahydrophenanthro[1,2-<i>b</i>]furan-10,11-dione
Fan, Cui-Ping; Yin, Wei-Ping; Cao, Xin-Xiang; Yao, Jing-Cai; Acta Crystallographica Section E 69 (2013) o834–; doi:10.1107/S1600536813011483

data_2237923
_publ_section_title
;
 2-Bromo-1,6,6-trimethyl-6,7,8,9-tetrahydrophenanthro[1,2-<i>b</i>]furan-10,11-dione
;
_journal_coeditor_code           KP2449
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o834
_journal_paper_doi               10.1107/S1600536813011483
_journal_volume                  69
_journal_year                    2013
_chemical_formula_iupac          'C19 H17 Br O3'
_chemical_formula_moiety         'C19 H17 Br O3'
_chemical_formula_sum            'C19 H17 Br O3'
_chemical_formula_weight         373.24
_chemical_name_systematic
2-Bromo-1,6,6-trimethyl-6,7,8,9-tetrahydrophenanthro[1,2-<i>b</i>]furan-10,11-dione
_space_group_IT_number           11
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yb'
_symmetry_space_group_name_H-M   'P 1 21/m 1'
_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                 96.7230(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.6063(12)
_cell_length_b                   7.0457(9)
_cell_length_c                   11.9688(15)
_cell_measurement_reflns_used    2150
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      22.95
_cell_measurement_theta_min      2.58
_cell_volume                     804.52(18)
_computing_cell_refinement       'SAINT (Bruker, 2005)'
_computing_data_collection       'SMART (Bruker, 2005)'
_computing_data_reduction        'SAINT (Bruker, 2005)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker SMART CCD area-detector'
_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  0.0462
_diffrn_reflns_av_sigmaI/netI    0.0379
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            6178
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.58
_exptl_absorpt_coefficient_mu    2.567
_exptl_absorpt_correction_T_max  0.7481
_exptl_absorpt_correction_T_min  0.3721
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2005)'
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.541
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             380
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.218
_refine_diff_density_min         -0.412
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.017
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     144
_refine_ls_number_reflns         1634
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.017
_refine_ls_R_factor_all          0.0492
_refine_ls_R_factor_gt           0.0329
_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^)+(0.0469P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0825
_refine_ls_wR_factor_ref         0.0866
_reflns_number_gt                1177
_reflns_number_total             1634
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            kp2449.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/m'
_cod_database_code               2237923
_cod_database_fobs_code          2237923