Ethyl 2-amino-4-(4-methoxyphenyl)-7-methyl-5-oxopyrano[3,2-<i>c</i>]pyran-3-carboxylate
Daqing Shi; Lihui Niu; Xiangshan Wang; Qiya Zhuang; Yong Zhang; Acta Crystallographica Section E 60 (2004) o2362–o2364; doi:10.1107/S1600536804029332

data_2204760
_publ_section_title
;Ethyl
 2-amino-4-(4-methoxyphenyl)-7-methyl-5-oxopyrano[3,2-<i>c</i>]pyran-3-carboxylate
;
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2362
_journal_page_last               o2364
_journal_paper_doi               10.1107/S1600536804029332
_journal_volume                  60
_journal_year                    2004
_chemical_formula_iupac          'C19 H19 N O6'
_chemical_formula_moiety         'C19 H19 N O6'
_chemical_formula_sum            'C19 H19 N O6'
_chemical_formula_weight         357.35
_chemical_melting_point          446.0(10)
_chemical_name_systematic
;
Ethyl
2-amino-4-(4-methoxyphenyl)-7-methyl-5-oxopyrano[3,2-c]pyran-3-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                 94.636(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.720(4)
_cell_length_b                   8.934(3)
_cell_length_c                   18.167(6)
_cell_measurement_reflns_used    7929
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3.1
_cell_volume                     1734.2(10)
_computing_cell_refinement       CrystalClear
_computing_data_collection       'CrystalClear (Rigaku, 2000)'
_computing_data_reduction        'CrystalStructure (Rigaku/MSC, 2003)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Sheldrick, 1997)'
_diffrn_ambient_temperature      193(2)
_diffrn_detector_area_resol_mean 7.31
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Rigaku Mercury'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0222
_diffrn_reflns_av_sigmaI/netI    0.0206
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            18580
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         3.06
_exptl_absorpt_coefficient_mu    0.103
_exptl_absorpt_correction_T_max  0.9553
_exptl_absorpt_correction_T_min  0.9143
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(Jacobson, 1998)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.369
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             752
_exptl_crystal_size_max          0.75
_exptl_crystal_size_mid          0.65
_exptl_crystal_size_min          0.45
_refine_diff_density_max         0.692
_refine_diff_density_min         -0.290
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.084
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     255
_refine_ls_number_reflns         3947
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.189
_refine_ls_R_factor_all          0.0652
_refine_ls_R_factor_gt           0.0594
_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^)+(0.0836P)^2^+0.9423P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1582
_refine_ls_wR_factor_ref         0.1634
_reflns_number_gt                3575
_reflns_number_total             3947
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ob6422.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '445-447' was changed to '446.0(10)'
- 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 '445-447' was changed to '446.0(10)'
- the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2204760
_cod_database_fobs_code          2204760