2-Oxo-1,2-dihydropyridine-3-carboxylic acid
Long, Si-Hui; Siegler, Maxime; Li, Tong-Lei; Acta Crystallographica Section E 62 (2006) o5664–o5665; doi:10.1107/S1600536806048768

data_2211494
_publ_section_title
;
 2-Oxo-1,2-dihydropyridine-3-carboxylic acid
;
_journal_coeditor_code           KP2066
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o5664
_journal_page_last               o5665
_journal_paper_doi               10.1107/S1600536806048768
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C6 H5 N O3'
_chemical_formula_moiety         'C6 H5 N O3'
_chemical_formula_sum            'C6 H5 N O3'
_chemical_formula_weight         139.11
_chemical_melting_point          .532E-305
_chemical_name_systematic
;
2-Oxo-1,2-dihydropyridine-3-carboxylic acid
;
_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           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 94.640(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   3.6400(10)
_cell_length_b                   11.584(3)
_cell_length_c                   13.565(3)
_cell_measurement_reflns_used    1370
_cell_measurement_temperature    90.0(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.00
_cell_volume                     570.1(2)
_computing_cell_refinement       'DENZO-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 2002)'
_computing_data_reduction        DENZO-SMN
_computing_molecular_graphics    'XP in SHELXTL (Bruker, 1997)'
_computing_publication_material  'SHELXL97 and local procedures'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      90.0(2)
_diffrn_detector_area_resol_mean 18
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\w scans at fixed \c = 55\%'
_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  0.0259
_diffrn_reflns_av_sigmaI/netI    0.0369
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            2539
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         2.32
_exptl_absorpt_coefficient_mu    0.133
_exptl_absorpt_correction_T_max  0.9804
_exptl_absorpt_correction_T_min  0.9613
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SCALEPACK; Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.621
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             288
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.333
_refine_diff_density_min         -0.275
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     92
_refine_ls_number_reflns         1307
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0643
_refine_ls_R_factor_gt           0.0451
_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^)+(0.0761P)^2^+0.1679P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1168
_refine_ls_wR_factor_ref         0.1300
_reflns_number_gt                971
_reflns_number_total             1307
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            kp2066.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2211494
_cod_database_fobs_code          2211494