2-Amino-7,7-dimethyl-5-oxo-4-(<i>p</i>-tolyl)-5,6,7,8-tetrahydro-4<i>H</i>-chromene-3-carbonitrile
Anthal, Sumati; Brahmachari, Goutam; Laskar, Sujay; Banerjee, Bubun; Kant, Rajni; Gupta, Vivek K.; Acta Crystallographica Section E 68 (2012) o2592–o2593; doi:10.1107/S1600536812033570

data_2235912
_publ_section_title
;
 2-Amino-7,7-dimethyl-5-oxo-4-(<i>p</i>-tolyl)-5,6,7,8-tetrahydro-4<i>H</i>-chromene-3-carbonitrile
;
_journal_coeditor_code           LH5503
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2592
_journal_page_last               o2593
_journal_paper_doi               10.1107/S1600536812033570
_journal_volume                  68
_journal_year                    2012
_chemical_formula_iupac          'C19 H20 N2 O2'
_chemical_formula_moiety         'C19 H20 N2 O2'
_chemical_formula_sum            'C19 H20 N2 O2'
_chemical_formula_weight         308.37
_chemical_name_systematic
;
2-Amino-7,7-dimethyl-5-oxo-4-(<i>p</i>-tolyl)-5,6,7,8-tetrahydro-
4<i>H</i>-chromene-3-carbonitrile
;
_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                 111.842(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.4622(3)
_cell_length_b                   16.8820(5)
_cell_length_c                   10.8301(4)
_cell_measurement_reflns_used    7806
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      29.0575
_cell_measurement_theta_min      3.5966
_cell_volume                     1605.82(10)
_computing_cell_refinement       'CrysAlis PRO (Oxford Diffraction, 2010)'
_computing_data_collection       'CrysAlis PRO (Oxford Diffraction, 2010)'
_computing_data_reduction        'CrysAlis PRO (Oxford Diffraction, 2010)'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material  'PLATON (Spek, 2009)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 16.1049
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Oxford Diffraction Xcalibur Sapphire3'
_diffrn_measurement_method       \w
_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  0.0366
_diffrn_reflns_av_sigmaI/netI    0.0271
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            18449
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         3.60
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.86226
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(CrysAlis PRO; Oxford Diffraction, 2010)'
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.276
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             656
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.198
_refine_diff_density_min         -0.221
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.050
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     219
_refine_ls_number_reflns         3149
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.050
_refine_ls_R_factor_all          0.0630
_refine_ls_R_factor_gt           0.0456
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0501P)^2^+0.4013P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1048
_refine_ls_wR_factor_ref         0.1147
_reflns_number_gt                2428
_reflns_number_total             3149
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            lh5503.cif
_cod_data_source_block           I
_cod_original_cell_volume        1605.82(9)
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2235912
_cod_database_fobs_code          2235912