7-Diethylamino-2-oxo-2<i>H</i>-chromene-3-carboxylic acid
Bardajee, Ghasem Rezanejade; Winnik, Mitchell A.; Lough, Alan J.; Acta Crystallographica Section E 62 (2006) o3076–o3078; doi:10.1107/S160053680602321X

data_2209698
_publ_section_title
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 7-Diethylamino-2-oxo-2<i>H</i>-chromene-3-carboxylic acid
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_journal_coeditor_code           WW2025
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o3076
_journal_page_last               o3078
_journal_paper_doi               10.1107/S160053680602321X
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C14 H15 N O4'
_chemical_formula_moiety         'C14 H15 N O4'
_chemical_formula_sum            'C14 H15 N O4'
_chemical_formula_weight         261.27
_chemical_name_systematic
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7-Diethylamino-2-oxo-2H-chromene-3-carboxylic acid
;
_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                 116.482(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.1207(4)
_cell_length_b                   7.7519(4)
_cell_length_c                   12.6348(5)
_cell_measurement_reflns_used    9549
_cell_measurement_temperature    150.0(10)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      3.0
_cell_volume                     1237.92(9)
_computing_cell_refinement       'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 2002)'
_computing_data_reduction        DENZO-SMN
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXTL (Sheldrick, 2001)'
_computing_structure_solution    'SIR92 (Altomare <i>et al.</i>,  1994)'
_diffrn_ambient_temperature      150.0(10)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker--Nonius KappaCCD'
_diffrn_measurement_method       '\f scans and \w scans with \k offsets'
_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  0.0745
_diffrn_reflns_av_sigmaI/netI    0.0741
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            9549
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.08
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.103
_exptl_absorpt_correction_T_max  0.997
_exptl_absorpt_correction_T_min  0.720
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SORTAV; Blessing, 1995)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.402
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             552
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.282
_refine_diff_density_min         -0.257
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.004
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     179
_refine_ls_number_reflns         2810
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.004
_refine_ls_R_factor_all          0.1223
_refine_ls_R_factor_gt           0.0574
_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^)+(0.0876P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1358
_refine_ls_wR_factor_ref         0.1730
_reflns_number_gt                1517
_reflns_number_total             2810
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ww2025.cif
_cod_data_source_block           3
_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/c'
_cod_database_code               2209698
_cod_database_fobs_code          2209698