(2<i>S</i>,3<i>S</i>)-3-(3-Bromophenyl)-6,6-dimethyl-2-nitro-2,3,6,7-tetrahydrobenzofuran-4(5<i>H</i>)-one
Wang, Yifeng; Yao, Minjie; Dong, Kun; Xu, Danqian; Acta Crystallographica Section E 69 (2013) o1270–; doi:10.1107/S160053681301920X

data_2238342
_publ_section_title
;
 (2<i>S</i>,3<i>S</i>)-3-(3-Bromophenyl)-6,6-dimethyl-2-nitro-2,3,6,7-tetrahydrobenzofuran-4(5<i>H</i>)-one
;
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1270
_journal_paper_doi               10.1107/S160053681301920X
_journal_volume                  69
_journal_year                    2013
_chemical_formula_iupac          'C16 H16 Br N O4'
_chemical_formula_moiety         'C16 H16 Br N O4'
_chemical_formula_sum            'C16 H16 Br N O4'
_chemical_formula_weight         366.21
_chemical_name_systematic
(2<i>S</i>,3<i>S</i>)-3-(3-Bromophenyl)-6,6-dimethyl-2-nitro-2,3,6,7-tetrahydrobenzofuran-4(5<i>H</i>)-one
_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                   6.6799(7)
_cell_length_b                   7.3713(9)
_cell_length_c                   32.9075(14)
_cell_measurement_reflns_used    8549
_cell_measurement_temperature    296.0(10)
_cell_measurement_theta_max      27.4
_cell_measurement_theta_min      3.0
_cell_volume                     1620.4(3)
_computing_cell_refinement       'PROCESS-AUTO (Rigaku, 2006)'
_computing_data_collection       'PROCESS-AUTO (Rigaku, 2006)'
_computing_data_reduction        'CrystalStructure (Rigaku, 2007)'
_computing_molecular_graphics    'ORTEP-3 for Windows (Farrugia, 2012)'
_computing_publication_material  'WinGX (Farrugia, 2012)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296.0(10)
_diffrn_detector_area_resol_mean 10.00
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0660
_diffrn_reflns_av_sigmaI/netI    0.0586
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       39
_diffrn_reflns_limit_l_min       -39
_diffrn_reflns_number            13344
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         3.03
_exptl_absorpt_coefficient_mu    2.553
_exptl_absorpt_correction_T_max  0.4549
_exptl_absorpt_correction_T_min  0.3837
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(ABSCOR; Higashi, 1995)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.501
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       chunk
_exptl_crystal_F_000             744
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.36
_exptl_crystal_size_min          0.31
_refine_diff_density_max         0.507
_refine_diff_density_min         -0.459
_refine_ls_abs_structure_details 'Flack (1983), 1221 Friedel pairs'
_refine_ls_abs_structure_Flack   0.003(18)
_refine_ls_extinction_coef       0.0068(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.003
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     200
_refine_ls_number_reflns         2997
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.003
_refine_ls_R_factor_all          0.0949
_refine_ls_R_factor_gt           0.0509
_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^)+(0.0122P)^2^+2.5684P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0888
_refine_ls_wR_factor_ref         0.1075
_reflns_number_gt                1857
_reflns_number_total             2997
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            fy2101.cif
_cod_data_source_block           I
_cod_database_code               2238342
_cod_database_fobs_code          2238342