Two-component molecular crystals composed of chloronitrobenzoic acids and 4-aminopyridine
Sugiyama, Teruki; Meng, Jiben; Matsuura, Teruo; Acta Crystallographica Section C 58 (2002) o242–o246; doi:10.1107/S0108270102003657

data_2012628
_publ_section_title
;
 Two-component molecular crystals composed of chloronitrobenzoic acids
 and 4-aminopyridine
;
_journal_issue                   4
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o242
_journal_page_last               o246
_journal_paper_doi               10.1107/S0108270102003657
_journal_volume                  58
_journal_year                    2002
_chemical_formula_iupac          'C5 H7 N2 + , C7 H3 Cl N O4 -'
_chemical_formula_moiety         'C5 H7 N2 + , C7 H3 Cl N O4 -'
_chemical_formula_sum            'C12 H10 Cl N3 O4'
_chemical_formula_weight         295.68
_chemical_name_systematic
;
4-Aminopyridium 2-chloro-5-nitrobenzoate
;
_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
_cell_angle_alpha                90
_cell_angle_beta                 96.329(5)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.624(4)
_cell_length_b                   7.270(2)
_cell_length_c                   14.023(5)
_cell_measurement_temperature    293(2)
_cell_volume                     1279.1(7)
_computing_cell_refinement       XSCANS
_computing_data_collection       'XSCANS (Siemens, 1996)'
_computing_data_reduction        'SHELXTL (Bruker, 1997)'
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Make? Model? CCD area-detector'
_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  0.023
_diffrn_reflns_av_sigmaI/netI    0.029
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            5062
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         2.06
_exptl_absorpt_coefficient_mu    0.316
_exptl_absorpt_correction_T_max  0.925
_exptl_absorpt_correction_T_min  0.897
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1995)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.535
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             608
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.15
_refine_diff_density_min         -0.23
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.017
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     193
_refine_ls_number_reflns         2256
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.018
_refine_ls_R_factor_all          0.053
_refine_ls_R_factor_gt           0.034
_refine_ls_shift/su_max          0.026
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.05P)^2^+0.08P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.084
_refine_ls_wR_factor_ref         0.093
_reflns_number_gt                1660
_reflns_number_total             2256
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            gd1189.cif
_cod_data_source_block           II
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

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               2012628
_cod_database_fobs_code          2012628