Ethyl 2-amino-5-oxo-4-(<i>p</i>-tolyl)-4<i>H</i>,5<i>H</i>-pyrano[3,2-<i>c</i>]chromene-8-carboxylate
Jing Wang; Daqing Shi; Xiangshan Wang; Acta Crystallographica Section E 60 (2004) o1725–o1727; doi:10.1107/S1600536804021841

data_2204409
_publ_section_title
;Ethyl
 2-amino-5-oxo-4-(<i>p</i>-tolyl)-4<i>H</i>,5<i>H</i>-pyrano[3,2-<i>c</i>]chromene-8-carboxylate
;
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1725
_journal_page_last               o1727
_journal_paper_doi               10.1107/S1600536804021841
_journal_volume                  60
_journal_year                    2004
_chemical_formula_moiety         'C22 H19 N O5'
_chemical_formula_sum            'C22 H19 N O5'
_chemical_formula_weight         377.38
_chemical_melting_point          464.5(5)
_chemical_name_systematic
;
Ethyl 9-amino-7-(p-tolyl)-7H-pyrano[3,2-c]coumarin-8-carboxylate
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 101.000(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.239(2)
_cell_length_b                   7.8500(10)
_cell_length_c                   15.846(3)
_cell_measurement_reflns_used    39
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      14.83
_cell_measurement_theta_min      3.11
_cell_volume                     1860.8(5)
_computing_cell_refinement       XSCANS
_computing_data_collection       'XSCANS (Siemens, 1994)'
_computing_data_reduction        'SHELXTL (Bruker, 1997)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Siemens P4'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0135
_diffrn_reflns_av_sigmaI/netI    0.0384
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            3918
_diffrn_reflns_theta_full        25.25
_diffrn_reflns_theta_max         25.25
_diffrn_reflns_theta_min         1.36
_diffrn_standards_decay_%        4.90
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.096
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.347
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             792
_exptl_crystal_size_max          0.58
_exptl_crystal_size_mid          0.52
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.173
_refine_diff_density_min         -0.149
_refine_ls_extinction_coef       0.0124(9)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.908
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     263
_refine_ls_number_reflns         3379
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      0.909
_refine_ls_R_factor_all          0.0660
_refine_ls_R_factor_gt           0.0397
_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^)+(0.0538P)^2^] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0947
_refine_ls_wR_factor_ref         0.1012
_reflns_number_gt                2173
_reflns_number_total             3379
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            wn6278.cif
_cod_data_source_block           I
_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:

'_chemical_melting_point' value '464-465' was changed to '464.5(5)' -
the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 

The following automatic conversions were performed:

'_chemical_melting_point' value '464-465' was changed to '464.5(5)' -
the average value was taken and precision was
estimated.

'_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_cell_volume        1860.7(5)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2204409
_cod_database_fobs_code          2204409