8,8-Dimethyl-8,9-dihydro-7<i>H</i>-chromeno[2,3-<i>b</i>]quinoline-10,12-dione
Srinivasan, Thothadri; Yuvaraj, Panneerselvam; Reddy, Boreddy S. R.; Velmurugan, Devadasan; Acta Crystallographica Section E 69 (2013) o254–; doi:10.1107/S1600536813001050

data_2237380
_publ_section_title
;
 8,8-Dimethyl-8,9-dihydro-7<i>H</i>-chromeno[2,3-<i>b</i>]quinoline-10,12-dione
;
_journal_coeditor_code           PV2617
_journal_issue                   2
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o254
_journal_paper_doi               10.1107/S1600536813001050
_journal_volume                  69
_journal_year                    2013
_chemical_formula_iupac          'C18 H15 N O3'
_chemical_formula_moiety         'C18 H15 N O3'
_chemical_formula_sum            'C18 H15 N O3'
_chemical_formula_weight         293.31
_chemical_name_systematic
;
8,8-Dimethyl-8,9-dihydro-7<i>H</i>-chromeno[2,3-<i>b</i>]quinoline-10,12-dione
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                60.939(4)
_cell_angle_beta                 88.107(5)
_cell_angle_gamma                77.546(5)
_cell_formula_units_Z            2
_cell_length_a                   7.4426(6)
_cell_length_b                   10.5117(9)
_cell_length_c                   10.6887(9)
_cell_measurement_reflns_used    2949
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.51
_cell_measurement_theta_min      2.19
_cell_volume                     711.22(11)
_computing_cell_refinement       'SAINT (Bruker, 2008)'
_computing_data_collection       'APEX2 (Bruker, 2008)'
_computing_data_reduction        'SAINT (Bruker, 2008)'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 2012)'
_computing_publication_material
'SHELXL97 (Sheldrick, 2008) and PLATON (Spek, 2009)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker SMART APEXII area-detector'
_diffrn_measurement_method       '\w and \f 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  0.0305
_diffrn_reflns_av_sigmaI/netI    0.0228
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            10655
_diffrn_reflns_theta_full        26.51
_diffrn_reflns_theta_max         26.51
_diffrn_reflns_theta_min         2.19
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.094
_exptl_absorpt_correction_T_max  0.9815
_exptl_absorpt_correction_T_min  0.9724
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(<i>SADABS</i>; Bruker, 2008)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.370
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             308
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.168
_refine_diff_density_min         -0.218
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     201
_refine_ls_number_reflns         2949
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0487
_refine_ls_R_factor_gt           0.0401
_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^)+(0.0598P)^2^+0.1006P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1106
_refine_ls_wR_factor_ref         0.1183
_reflns_number_gt                2427
_reflns_number_total             2949
_reflns_threshold_expression     I>2sigma(I)
_cod_data_source_file            pv2617.cif
_cod_data_source_block           I
_cod_original_cell_volume        711.22(10)
_cod_database_code               2237380
_cod_database_fobs_code          2237380