Substituent and temperature controlled tautomerism: multinuclear magnetic resonance, X-ray, and theoretical studies on 2-phenacylquinolines
Kolehmainen, Erkki; Ośmiałowski, Borys; Krygowski, Tadeusz M.; Kauppinen, Reijo; Nissinen, Maija; Gawinecki, Ryszard; Journal of the Chemical Society, Perkin Transactions 2  (2000) 1259–; doi:10.1039/a908874a

data_7213211
_publ_contact_author
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Ryszard Gawinecki
Department of Chemistry
Technical and Agricultural University
Seminaryjna 3
PL-85-326 Bydgoszcz
Poland
;
_publ_section_title
;
 Substituent and temperature controlled tautomerism: multinuclear magnetic
 resonance, X-ray, and theoretical studies on 2-phenacylquinolines
;
_journal_issue                   6
_journal_name_full
'Journal of the Chemical Society, Perkin Transactions 2'
_journal_page_first              1259
_journal_paper_doi               10.1039/a908874a
_journal_year                    2000
_chemical_formula_sum            'C18 H15 N O'
_chemical_formula_weight         261.31
_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                 90.488(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   7.354(1)
_cell_length_b                   12.314(1)
_cell_length_c                   29.346(1)
_cell_measurement_temperature    173(2)
_cell_volume                     2657.4(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173.0(1)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Nonius KappaCCD'
_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    0.0649
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       38
_diffrn_reflns_limit_l_min       -38
_diffrn_reflns_number            6297
_diffrn_reflns_theta_full        27.88
_diffrn_reflns_theta_max         27.88
_diffrn_reflns_theta_min         3.23
_exptl_absorpt_coefficient_mu    0.081
_exptl_absorpt_correction_T_max  0.9840
_exptl_absorpt_correction_T_min  0.9531
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.306
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1104
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.50
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.266
_refine_diff_density_min         -0.231
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.110
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     459
_refine_ls_number_reflns         6297
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.110
_refine_ls_R_factor_all          0.1093
_refine_ls_R_factor_gt           0.0614
_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^)+(0.0322P)^2^+2.0460P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1347
_refine_ls_wR_factor_ref         0.1522
_reflns_number_gt                4101
_reflns_number_total             6297
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            a908874asup1.cif
_cod_data_source_block           compound4
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7213211