Crystal structures of 6a,6b,7,11a-tetrahydro-6<i>H</i>,9<i>H</i>-spiro[chromeno[3',4':3,4]pyrrolo[1,2-<i>c</i>]thiazole-11,3'-indoline]-2',6-dione and 5'-methyl-6a,6b,7,11a-tetrahydro-6<i>H</i>,9<i>H</i>-spiro[chromeno[3',4':3,4]pyrrolo[1,2-<i>c</i>]thiazole-11,3'-indoline]-2',6-dione
Pangajavalli, S.; Ranjithkumar, R.; Srinivasan, N.; Ramaswamy, S.; Selvanayagam, S.; Acta Crystallographica Section E 75 (2019) 246–250; doi:10.1107/S2056989019000045

data_2242829
_publ_section_title
;
 Crystal structures of
 6a,6b,7,11a-tetrahydro-6<i>H</i>,9<i>H</i>-spiro[chromeno[3',4':3,4]pyrrolo[1,2-<i>c</i>]thiazole-11,3'-indoline]-2',6-dione
 and
 5'-methyl-6a,6b,7,11a-tetrahydro-6<i>H</i>,9<i>H</i>-spiro[chromeno[3',4':3,4]pyrrolo[1,2-<i>c</i>]thiazole-11,3'-indoline]-2',6-dione
;
_journal_coeditor_code           SU5467
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              246
_journal_page_last               250
_journal_paper_doi               10.1107/S2056989019000045
_journal_volume                  75
_journal_year                    2019
_chemical_formula_iupac          'C20 H16 N2 O3 S'
_chemical_formula_moiety         'C20 H16 N2 O3 S'
_chemical_formula_sum            'C20 H16 N2 O3 S'
_chemical_formula_weight         364.41
_chemical_name_systematic
6a,6b,7,11a-Tetrahydro-6<i>H</i>,9<i>H</i>-spiro[chromeno[3',4':3,4]pyrrolo[1,2-<i>c</i>]thiazole-11,3'-indoline]-2',6-dione
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_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-2018/3
_cell_angle_alpha                90
_cell_angle_beta                 101.0720(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.3058(9)
_cell_length_b                   10.0905(8)
_cell_length_c                   15.1957(12)
_cell_measurement_reflns_used    11828
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      27.6
_cell_measurement_theta_min      2.4
_cell_volume                     1701.3(2)
_computing_cell_refinement
;
SAINT (Bruker, 2002)
;
_computing_data_collection
;
SMART (Bruker, 2002)
;
_computing_data_reduction
;
SAINT (Bruker, 2002)
;
_computing_molecular_graphics
;
PLATON (Spek, 2009) and Mercury (Macrae <i>et al.</i>,  2008)
;
_computing_publication_material
;
SHELXL2018 (Sheldrick, 2015), PLATON (Spek, 2009) and
publCIF (Westrip, 2010)
;
_computing_structure_refinement
;
SHELXL2018 (Sheldrick, 2015)
;
_computing_structure_solution
;
SHELXS97 (Sheldrick, 2008)
;
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.972
_diffrn_measurement_device_type  'Bruker SMART APEX CCD area-detector'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0230
_diffrn_reflns_av_unetI/netI     0.0175
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            19453
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.358
_diffrn_reflns_theta_min         2.067
_exptl_absorpt_coefficient_mu    0.214
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.423
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             760
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.646
_refine_diff_density_min         -0.367
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.023
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     235
_refine_ls_number_reflns         4146
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.023
_refine_ls_R_factor_all          0.0579
_refine_ls_R_factor_gt           0.0520
_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^)+(0.0749P)^2^+0.6691P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1359
_refine_ls_wR_factor_ref         0.1410
_reflns_number_gt                3646
_reflns_number_total             4146
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            su5467sup1.cif
_cod_data_source_block           I
_cod_database_code               2242829
_cod_database_fobs_code          2242829
_shelx_hkl_checksum              47129
_shelx_res_checksum              92255