(4a<i>SR</i>,7<i>RS</i>,9a<i>SR</i>)-7,9a-Dimethyl-5,5-dioxo-1,2,4a,6,7,9a-hexahydro-8-oxa-5λ^6^-thia-1,4-benzocyclohepten-9-one
Zeller, Matthias; Hunter, Allen D.; Sampson, Paul; Chumachenko, Nataliya; Acta Crystallographica Section E 60 (2004) o729–o730; doi:10.1107/S1600536804007627

data_2203544
_publ_section_title
(4a<i>SR</i>,7<i>RS</i>,9a<i>SR</i>)-7,9a-Dimethyl-5,5-dioxo-1,2,4a,6,7,9a-hexahydro-8-oxa-5\l^6^-thia-1,4-benzocyclohepten-9-one
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o729
_journal_page_last               o730
_journal_paper_doi               10.1107/S1600536804007627
_journal_volume                  60
_journal_year                    2004
_chemical_formula_iupac          'C11 H16 O4 S'
_chemical_formula_moiety         'C11 H16 O4 S'
_chemical_formula_sum            'C11 H16 O4 S'
_chemical_formula_weight         244.30
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 114.062(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.0232(10)
_cell_length_b                   10.6255(10)
_cell_length_c                   11.6726(11)
_cell_measurement_reflns_used    9433
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.299
_cell_measurement_theta_min      2.2255
_cell_volume                     1135.13(19)
_computing_cell_refinement       'SAINT-Plus (Bruker, 1997-1999)'
_computing_data_collection       'SMART (Bruker, 1997-2000)'
_computing_data_reduction        SAINT-Plus
_computing_molecular_graphics    SHELXL97
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART APEX CCD diffractometer'
_diffrn_measurement_method       '\w 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  0.0239
_diffrn_reflns_av_sigmaI/netI    0.0189
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            11460
_diffrn_reflns_theta_full        28.30
_diffrn_reflns_theta_max         28.30
_diffrn_reflns_theta_min         2.27
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.281
_exptl_absorpt_correction_T_max  0.945
_exptl_absorpt_correction_T_min  0.735
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS in SAINT-Plus; Bruker, 1997--1999)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.430
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             520
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.438
_refine_diff_density_min         -0.315
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.102
_refine_ls_hydrogen_treatment    refxyz
_refine_ls_matrix_type           full
_refine_ls_number_parameters     193
_refine_ls_number_reflns         2829
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.102
_refine_ls_R_factor_all          0.0367
_refine_ls_R_factor_gt           0.0354
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0521P)^2^+0.5113P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0954
_refine_ls_wR_factor_ref         0.0966
_reflns_number_gt                2729
_reflns_number_total             2829
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bt6435.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2203544
_cod_database_fobs_code          2203544