Hydrogen-bonded structures of the isomeric 2-, 3- and 4-carbamoylpyridinium hydrogen chloranilates
Gotoh, Kazuma; Nagoshi, Hirokazu; Ishida, Hiroyuki; Acta Crystallographica Section C 65 (2009) o273–o277; doi:10.1107/S010827010901525X

data_2017134
_publ_section_title
;
 Hydrogen-bonded structures of the isomeric 2-, 3- and
 4-carbamoylpyridinium hydrogen chloranilates
;
_journal_coeditor_code           GD3286
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o273
_journal_page_last               o277
_journal_paper_doi               10.1107/S010827010901525X
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          'C6 H7 N2 O + , C6 H Cl2 O4 -'
_chemical_formula_moiety         'C6 H7 N2 O + , C6 H Cl2 O4 -'
_chemical_formula_sum            'C12 H8 Cl2 N2 O5'
_chemical_formula_weight         331.11
_chemical_name_common
;
4-carbamoylpyridinium hydrogen chloranilate
;
_chemical_name_systematic
;
4-carbamoylpyridinium 2,5-dichloro-4-hydroxy-3,6-dioxocyclohexa-1,4-dienolate
;
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.0000
_cell_angle_beta                 92.0130(11)
_cell_angle_gamma                90.0000
_cell_formula_units_Z            4
_cell_length_a                   12.9482(4)
_cell_length_b                   13.4993(5)
_cell_length_c                   7.0726(3)
_cell_measurement_reflns_used    5726
_cell_measurement_temperature    100.0(10)
_cell_measurement_theta_max      30.0
_cell_measurement_theta_min      3.0
_cell_volume                     1235.47(8)
_computing_cell_refinement       'PROCESS-AUTO (Rigaku/MSC, 2004)'
_computing_data_collection       'PROCESS-AUTO (Rigaku/MSC, 2004)'
_computing_data_reduction        'CrystalStructure (Rigaku/MSC, 2004)'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material
'CrystalStructure (Rigaku/MSC, 2004) and PLATON (Spek, 2009)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_detector_area_resol_mean 10.00
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID II'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0155
_diffrn_reflns_av_sigmaI/netI    0.0238
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            5840
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         29.99
_diffrn_reflns_theta_min         3.02
_exptl_absorpt_coefficient_mu    0.550
_exptl_absorpt_correction_T_max  0.936
_exptl_absorpt_correction_T_min  0.767
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(ABSCOR; Higashi, 1995)'
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.780
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       platelet
_exptl_crystal_F_000             672.00
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.319
_refine_diff_density_min         -0.232
_refine_ls_abs_structure_details 'Flack (1983), with 1411 Friedel pairs'
_refine_ls_abs_structure_Flack   0.00(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.084
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     206
_refine_ls_number_reflns         3185
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.083
_refine_ls_R_factor_all          0.0255
_refine_ls_R_factor_gt           0.0215
_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^)+(0.0391P)^2^+0.1632P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0559
_refine_ls_wR_factor_ref         0.0608
_reflns_number_gt                3029
_reflns_number_total             3185
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            gd3286.cif
_cod_data_source_block           III
_cod_original_formula_sum        'C12 H8 Cl2 N2 O5 '
_cod_database_code               2017134
_cod_database_fobs_code          2017134