4-[(Dimethylamino)methylidene]-2-(4-nitrophenyl)-1,3-oxazol-5(4<i>H</i>)-one
Romeiro, Gilberto A.; Ribeiro, Carlos M. R.; Wardell, Solange M. S. V.; Wardell, James L.; Ng, Seik Weng; Tiekink, Edward R. T.; Acta Crystallographica Section E 66 (2010) o1450–o1451; doi:10.1107/S1600536810018635

data_2226104
_publ_section_title
;
 4-[(Dimethylamino)methylidene]-2-(4-nitrophenyl)-1,3-oxazol-5(4<i>H</i>)-one
;
_journal_coeditor_code           EZ2209
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1450
_journal_page_last               o1451
_journal_paper_doi               10.1107/S1600536810018635
_journal_volume                  66
_journal_year                    2010
_chemical_formula_iupac          'C12 H11 N3 O4'
_chemical_formula_moiety         'C12 H11 N3 O4'
_chemical_formula_sum            'C12 H11 N3 O4'
_chemical_formula_weight         261.24
_chemical_name_systematic
;
4-[(Dimethylamino)methylidene]-2-(4-nitrophenyl)-1,3-oxazol-5(4<i>H</i>)-one
;
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90
_cell_angle_beta                 106.661(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.5313(2)
_cell_length_b                   9.5204(3)
_cell_length_c                   13.0349(4)
_cell_measurement_reflns_used    2714
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.9
_cell_volume                     1133.15(6)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997) and COLLECT (Hooft, 1998)'
_computing_data_collection       'COLLECT (Hooft, 1998)'
_computing_data_reduction
'DENZO (Otwinowski & Minor, 1997) and COLLECT (Hooft, 1998)'
_computing_molecular_graphics
'ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 2006)'
_computing_publication_material  '<i>publCIF</i> (Westrip, 2010)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Nonius KappaCCD area-detector'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  '10 cm confocal mirrors'
_diffrn_radiation_source         'Enraf Nonius FR591 rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.071
_diffrn_reflns_av_sigmaI/netI    0.044
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            14210
_diffrn_reflns_theta_full        27.4
_diffrn_reflns_theta_max         27.4
_diffrn_reflns_theta_min         3.1
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.118
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.661
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 2007)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.531
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             544
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.38
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.33
_refine_diff_density_min         -0.30
_refine_ls_extinction_coef       0.018(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.19
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     176
_refine_ls_number_reflns         2581
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.19
_refine_ls_R_factor_all          0.085
_refine_ls_R_factor_gt           0.065
_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^)+(0.0936P)^2^+1.6594P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.203
_refine_ls_wR_factor_ref         0.220
_reflns_number_gt                2030
_reflns_number_total             2581
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ez2209.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2226104
_cod_database_fobs_code          2226104