A resonance-assisted intramolecular hydrogen bond in compounds containing 2-hydroxy-3,5-dinitrobenzoic acid and its various deprotonated forms: redetermination of several related structures
Fábry, Jan; Acta Crystallographica Section E 74 (2018) 1344–1357; doi:10.1107/S2056989018011544

data_2242600
_publ_section_title
;
 A resonance-assisted intramolecular hydrogen bond in compounds containing
 2-hydroxy-3,5-dinitrobenzoic acid and its various deprotonated forms:
 redetermination of several related structures
;
_journal_coeditor_code           SU5452
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              1344
_journal_page_last               1357
_journal_paper_doi               10.1107/S2056989018011544
_journal_volume                  74
_journal_year                    2018
_chemical_formula_iupac          'C5 H9 N2 +, C7 H3 N2 O7 -'
_chemical_formula_moiety         'C5 H9 N2 +, C7 H3 N2 O7 -'
_chemical_formula_sum            'C12 H12 N4 O7'
_chemical_formula_weight         324.26
_chemical_name_systematic
;
3,5-Dimethylpyrazolium 3,5-dinitrosalicylate
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 91.9040(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.1183(7)
_cell_length_b                   6.0636(5)
_cell_length_c                   14.1453(11)
_cell_measurement_reflns_used    1025
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      22.584
_cell_measurement_theta_min      2.506
_cell_volume                     695.93(10)
_computing_cell_refinement
;
SAINT (Bruker, 2002)
;
_computing_data_collection
;
SMART (Bruker, 2002)
;
_computing_data_reduction
;
SAINT (Bruker, 2002)
;
_computing_structure_refinement
;
JANA2006 (Petricek, 2014)
;
_computing_structure_solution
;
SHELXS-97 (Sheldrick, 2008)
;
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker SMART CCD'
_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  0.0397
_diffrn_reflns_av_sigmaI/netI    0.0575
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            3523
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         2.51
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.130
_exptl_absorpt_correction_T_max  0.986
_exptl_absorpt_correction_T_min  0.959
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
(SADABS; Bruker, 2002)
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.547
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             336
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.11
_refine_diff_density_min         -0.10
_refine_ls_abs_structure_details '  955 of Friedel pairs used in the refinement'
_refine_ls_abs_structure_Flack   0.5
_refine_ls_extinction_coef       31E2(4)
_refine_ls_extinction_method
;
B-C type 1 Lorentzian isotropic (Becker & Coppens, 1974)
;
_refine_ls_goodness_of_fit_ref   1.16
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_constraints    37
_refine_ls_number_parameters     212
_refine_ls_number_reflns         2301
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0664
_refine_ls_R_factor_gt           0.0413
_refine_ls_shift/su_max          0.0331
_refine_ls_shift/su_mean         0.0055
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details     w=1/(\s^2^(I)+0.0004I^2^)
_refine_ls_weighting_scheme      sigma
_refine_ls_wR_factor_gt          0.0803
_refine_ls_wR_factor_ref         0.0883
_reflns_number_gt                1444
_reflns_number_total             2301
_reflns_threshold_expression     I>3\s(I)
_cod_data_source_file            su5452sup1.cif
_cod_data_source_block           SEDKET
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               2242600