An Unexpected Intermediate in the Synthesis of Substituted Pyridones
Wireko, F. C.; Matthews, R. S.; Thoman, S. M.; Hennes, D. H.; Sickman, L. H.; Acta Crystallographica Section C 51 (1995) 1404–1407; doi:10.1107/S0108270195001259

data_2003646
_publ_section_title
;
 An Unexpected Intermediate in the Synthesis of Substituted Pyridones
;
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1404
_journal_page_last               1407
_journal_paper_doi               10.1107/S0108270195001259
_journal_volume                  51
_journal_year                    1995
_chemical_formula_moiety         'C15 H20 N2 O3'
_chemical_formula_sum            'C15 H20 N2 O3'
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_atom_type_scat_source           'SHELXTL-Plus (Sheldrick, 1990)'
_cell_angle_alpha                90.
_cell_angle_beta                 109.31(1)
_cell_angle_gamma                90.
_cell_formula_units_Z            4
_cell_length_a                   9.248(2)
_cell_length_b                   16.521(4)
_cell_length_c                   10.359(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    294
_cell_measurement_theta_max      22
_cell_measurement_theta_min      15
_cell_volume                     1493.7(6)
_diffrn_measurement_device       'Rigaku AFC5R RU200'
_diffrn_measurement_method       \q-2\q
_diffrn_radiation_type           CuK\a
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_diffrn_standards_decay_%        0
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_refine_ls_shift/esd_max         0.006
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     'w = 1/\s^2^(F)'
_refine_ls_weighting_scheme      calc
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_reflns_number_observed          1529
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_reflns_observed_criterion       F>=4\s(F)
_cod_data_source_file            cr1149.cif
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_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'w = 1/\s^2^(F)' was changed to
'calc'. New tag '_refine_ls_weighting_details' was created. The value
of the new tag was set to 'w = 1/\s^2^(F)'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_sg_symbol_H-M      'P 21/a'
_cod_database_code               2003646