(4-Oxo-1,4-dihydropyridin-1-yl)acetic acid
Shan Gao; Zhu-Yan Zhang; Li-Hua Huo; Jing-Gui Zhao; Zain, Sharifuddin M.; Ng, Seik Weng; Acta Crystallographica Section E 60 (2004) o1006–o1008; doi:10.1107/S1600536804011110

data_2203713
_publ_section_title
;
 (4-Oxo-1,4-dihydropyridin-1-yl)acetic acid
;
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1006
_journal_page_last               o1008
_journal_paper_doi               10.1107/S1600536804011110
_journal_volume                  60
_journal_year                    2004
_chemical_formula_iupac          'C7 H7 N O3'
_chemical_formula_moiety         'C7 H7 N O3'
_chemical_formula_sum            'C7 H7 N O3'
_chemical_formula_weight         153.14
_chemical_name_systematic
;
(4-Oxo-1,4-dihydropyridin-1-yl)acetic acid
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   4.7413(17)
_cell_length_b                   9.595(5)
_cell_length_c                   15.069(7)
_cell_measurement_reflns_used    6039
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.3
_cell_measurement_theta_min      4.5
_cell_volume                     685.5(5)
_computing_cell_refinement       RAPID-AUTO
_computing_data_collection       'RAPID-AUTO (Rigaku, 1998)'
_computing_data_reduction        'CrystalStructure (Rigaku/MSC, 2002)'
_computing_molecular_graphics    'ORTEPII (Johnson, 1976)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.00
_diffrn_measured_fraction_theta_max 1.00
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID'
_diffrn_measurement_method       \w
_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  0.042
_diffrn_reflns_av_sigmaI/netI    0.021
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            6046
_diffrn_reflns_theta_full        27.5
_diffrn_reflns_theta_max         27.5
_diffrn_reflns_theta_min         3.4
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.118
_exptl_absorpt_correction_T_max  0.977
_exptl_absorpt_correction_T_min  0.963
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(ABSCOR; Higashi, 1995)'
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.484
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             320
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.21
_refine_diff_density_min         -0.19
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.11
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     101
_refine_ls_number_reflns         945
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.12
_refine_ls_R_factor_all          0.050
_refine_ls_R_factor_gt           0.044
_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^)+(0.0871P)^2^+0.1698P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.123
_refine_ls_wR_factor_ref         0.146
_reflns_number_gt                857
_reflns_number_total             945
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            bt6460.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Multi-scan' changed
to 'multi-scan' 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 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' 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_database_code               2203713
_cod_database_fobs_code          2203713