Structural assignment of the enol–keto tautomers of one-pot synthesized 4-hydroxyquinolines/4-quinolones
Kang, On-Yu; Park, Seong Jun; Ahn, Hyojung; Jeong, Kyung Chae; Lim, Hwan Jung; Organic Chemistry Frontiers 6 (2019) 183–; doi:10.1039/C8QO00884A

data_1554438
_publ_section_title
;
 Structural assignment of the enol--keto tautomers of one-pot synthesized
 4-hydroxyquinolines/4-quinolones
;
_journal_issue                   2
_journal_name_full               'Organic Chemistry Frontiers'
_journal_page_first              183
_journal_paper_doi               10.1039/C8QO00884A
_journal_volume                  6
_journal_year                    2019
_chemical_formula_sum            'C13 H15 N O5 S'
_chemical_formula_weight         297.32
_chemical_name_systematic
'Methyl 8-methoxy-2-(methylthio)-4-oxo-1,4-dihydroquinoline-3-carboxylate'
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2018-04-18 deposited with the CCDC.
2018-11-28 downloaded from the CCDC.
;
_cell_angle_alpha                80.813(2)
_cell_angle_beta                 84.674(2)
_cell_angle_gamma                88.958(3)
_cell_formula_units_Z            2
_cell_length_a                   7.2268(3)
_cell_length_b                   9.0737(4)
_cell_length_c                   10.4696(4)
_cell_measurement_reflns_used    5192
_cell_measurement_temperature    296(1)
_cell_measurement_theta_max      28.25
_cell_measurement_theta_min      2.27
_cell_volume                     674.80(5)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(1)
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0196
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            3359
_diffrn_reflns_theta_full        28.48
_diffrn_reflns_theta_max         28.48
_diffrn_reflns_theta_min         1.98
_exptl_absorpt_coefficient_mu    0.259
_exptl_absorpt_correction_T_max  0.9647
_exptl_absorpt_correction_T_min  0.9172
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            silver
_exptl_crystal_density_diffrn    1.463
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             312
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: Dichloromethane, Methanol'
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.471
_refine_diff_density_min         -0.295
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    refxyz
_refine_ls_matrix_type           full
_refine_ls_number_parameters     191
_refine_ls_number_reflns         3359
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0589
_refine_ls_R_factor_gt           0.0511
_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^)+(0.1004P)^2^+0.1146P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1476
_refine_ls_wR_factor_ref         0.1552
_reflns_number_gt                2808
_reflns_number_total             3359
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c8qo00884a2.cif
_cod_data_source_block           20161229_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Triclinic' was changed to
'triclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

data item '_exptl_crystal_density_meas' value 'none' was changed to
'?' -- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1554438