2-Amino-4-(1-naphthyl)-5-oxo-5,6,7,8-tetrahydro-4<i>H</i>-chromene-3-carbonitrile and 2-amino-7,7-dimethyl-4-(1-naphthyl)-5-oxo-5,6,7,8-tetrahydro-4<i>H</i>-chromene-3-carbonitrile
Vladimir N. Nesterov; David J. Wiedenfeld; Svitlana V. Nesterova; Mark A. Minton; Acta Crystallographica Section C 60 (2004) o334–o337; doi:10.1107/S0108270104006924

data_2014011
_publ_section_title
;2-Amino-4-(1-naphthyl)-5-oxo-5,6,7,8-tetrahydro-4<i>H</i>-chromene-3-carbonitrile
 and
 2-amino-7,7-dimethyl-4-(1-naphthyl)-5-oxo-5,6,7,8-tetrahydro-4<i>H</i>-chromene-3-carbonitrile
;
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o334
_journal_page_last               o337
_journal_paper_doi               10.1107/S0108270104006924
_journal_volume                  60
_journal_year                    2004
_chemical_formula_iupac          'C20 H16 N2 O2'
_chemical_formula_moiety         'C20 H16 N2 O2'
_chemical_formula_sum            'C20 H16 N2 O2'
_chemical_formula_weight         316.35
_chemical_melting_point          501
_chemical_name_systematic
;
2-Amino-4-(1-naphthyl)-5-oxo-5,6,7,8-tetrahydro-4H-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           SHELXL97
_cell_angle_alpha                90
_cell_angle_beta                 92.98(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.4410(13)
_cell_length_b                   9.6330(19)
_cell_length_c                   24.911(5)
_cell_measurement_reflns_used    24
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      13
_cell_measurement_theta_min      12
_cell_volume                     1543.5(5)
_computing_cell_refinement       'CAD-4 Software'
_computing_data_collection       'CAD-4 Software (Enraf--Nonuis, 1989)'
_computing_data_reduction        'SHELXTL (Sheldrick, 1994)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 0.99
_diffrn_measured_fraction_theta_max 0.99
_diffrn_measurement_device_type  'Enraf--Nonius CAD-4'
_diffrn_measurement_method       \q/2\q
_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  0.0613
_diffrn_reflns_av_sigmaI/netI    0.0315
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            3619
_diffrn_reflns_theta_full        27.0
_diffrn_reflns_theta_max         27.0
_diffrn_reflns_theta_min         1.6
_diffrn_standards_decay_%        3
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.361
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             664
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.33
_refine_diff_density_min         -0.24
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         3318
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0879
_refine_ls_R_factor_gt           0.0512
_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^)+(0.085P)^2^+0.45P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1355
_refine_ls_wR_factor_ref         0.1569
_reflns_number_gt                2287
_reflns_number_total             3318
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            gg1213.cif
_cod_data_source_block           IIIa
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2014011
_cod_database_fobs_code          2014011