A Serendipitous Synthesis of Bis-Heterocyclic Spiro 3(2H)-Furanones.
Picado, Alfredo; Li, ShengJian; Dieter, R. Karl; The Journal of organic chemistry 81 (2016) 1391–1400; doi:10.1021/acs.joc.5b02350

data_4031864
_publ_section_title
;
 A Serendipitous Synthesis of Bis-Heterocyclic Spiro 3(2H)-Furanones.
;
_journal_issue                   4
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              1391
_journal_page_last               1400
_journal_paper_doi               10.1021/acs.joc.5b02350
_journal_volume                  81
_journal_year                    2016
_chemical_absolute_configuration ad
_chemical_formula_sum            'C11 H10 O2 S2'
_chemical_formula_weight         238.31
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_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
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_atom_sites_solution_secondary   difmap
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_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.0792(14)
_cell_length_b                   10.326(2)
_cell_length_c                   14.979(3)
_cell_measurement_reflns_used    4500
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      26.7261
_cell_measurement_theta_min      2.3958
_cell_volume                     1095.0(4)
_computing_cell_refinement       'CrystalClear (Rigaku/MSC, 2006)'
_computing_data_collection       'CrystalClear (Rigaku/MSC, 2006)'
_computing_data_reduction        'CrystalClear (Rigaku/MSC, 2006)'
_computing_molecular_graphics    'DIAMOND (Bradenburg, 1999)'
_computing_publication_material  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      200(2)
_diffrn_detector_area_resol_mean 14.6199
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Rigaku AFC8S'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0216
_diffrn_reflns_av_unetI/netI     0.0152
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.993
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            8039
_diffrn_reflns_point_group_measured_fraction_full 0.992
_diffrn_reflns_point_group_measured_fraction_max 0.992
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.243
_diffrn_reflns_theta_min         2.396
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.461
_exptl_absorpt_correction_T_max  0.8779
_exptl_absorpt_correction_T_min  0.8091
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'REQAB, CrystalClear'
_exptl_crystal_colour            colorless
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_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             496
_exptl_crystal_size_max          0.480
_exptl_crystal_size_mid          0.390
_exptl_crystal_size_min          0.290
_refine_diff_density_max         0.215
_refine_diff_density_min         -0.254
_refine_diff_density_rms         0.051
_refine_ls_abs_structure_details
;
 Flack x determined using 769 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.01(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.129
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     136
_refine_ls_number_reflns         1970
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.129
_refine_ls_R_factor_all          0.0304
_refine_ls_R_factor_gt           0.0292
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0479P)^2^+0.2340P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0767
_refine_ls_wR_factor_ref         0.0777
_reflns_Friedel_coverage         0.692
_reflns_Friedel_fraction_full    0.991
_reflns_Friedel_fraction_max     0.991
_reflns_number_gt                1890
_reflns_number_total             1970
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo5b02350_si_002.cif
_cod_data_source_block           cpd19
_cod_depositor_comments
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The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 

 Adding full bibliography for 4031862--4031865.cif.
;
_cod_original_cell_volume        1094.9(4)
_cod_database_code               4031864
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.921
_shelx_estimated_absorpt_t_max   1.000
_shelx_res_checksum              63645
_shelx_hkl_checksum              20256