4-Carboxypyridazin-1-ium chloride
Starosta, Wojciech; Leciejewicz, Janusz; Acta Crystallographica Section E 64 (2008) o1553–; doi:10.1107/S1600536808022319

data_2219140
_publ_section_title
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 4-Carboxypyridazin-1-ium chloride
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_journal_coeditor_code           RK2101
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1553
_journal_paper_doi               10.1107/S1600536808022319
_journal_volume                  64
_journal_year                    2008
_chemical_formula_iupac          'C5 H5 N2 O2 +, Cl -'
_chemical_formula_moiety         'C5 H5 N2 O2 +, Cl -'
_chemical_formula_sum            'C5 H5 Cl N2 O2'
_chemical_formula_weight         160.56
_chemical_name_systematic
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4-Carboxypyridazin-1-ium chloride
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_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_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                 97.65(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.8505(14)
_cell_length_b                   6.5905(13)
_cell_length_c                   14.561(3)
_cell_measurement_reflns_used    6
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      15
_cell_measurement_theta_min      6
_cell_volume                     651.6(2)
_computing_cell_refinement       'KM-4 Software (Kuma, 1996)'
_computing_data_collection       'KM-4 Software (Kuma, 1996)'
_computing_data_reduction        'DATAPROC (Kuma, 2001)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Kuma KM-4 four-circle'
_diffrn_measurement_method       'Profile data from \w/2\q'
_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  0.0235
_diffrn_reflns_av_sigmaI/netI    0.0289
_diffrn_reflns_limit_h_max       0
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            2062
_diffrn_reflns_theta_full        30.06
_diffrn_reflns_theta_max         30.06
_diffrn_reflns_theta_min         2.82
_diffrn_standards_decay_%        1.15
_diffrn_standards_interval_count 200
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.517
_exptl_absorpt_correction_T_max  0.95225
_exptl_absorpt_correction_T_min  0.94161
_exptl_absorpt_correction_type   analytical
_exptl_absorpt_process_details   '(CrysAlis RED; Oxford Diffraction, 2008)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.637
_exptl_crystal_density_method    'Not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             328
_exptl_crystal_size_max          0.39
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.355
_refine_diff_density_min         -0.206
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     99
_refine_ls_number_reflns         1917
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0637
_refine_ls_R_factor_gt           0.0297
_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^)+(0.0577P)^2^+0.1527P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0908
_refine_ls_wR_factor_ref         0.1041
_reflns_number_gt                1318
_reflns_number_total             1917
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            rk2101.cif
_cod_data_source_block           I
_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.

'_atom_sites_solution_hydrogens' value 'Geom' changed to
'geom' according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_atom_sites_solution_primary' value 'Direct' changed to
'direct' according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_atom_sites_solution_secondary' value 'Difmap' changed to
'difmap' according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Analytical' changed
to 'analytical' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

'_refine_ls_matrix_type'
value 'Full' changed to 'full' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from
2010-06-29.

'_refine_ls_weighting_scheme' value 'Calc' changed to 'calc'
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.

'_atom_sites_solution_hydrogens' value 'Geom' changed to
'geom' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from
2010-06-29.

'_atom_sites_solution_primary' value 'Direct' changed to
'direct' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from
2010-06-29.

'_atom_sites_solution_secondary' value 'Difmap' changed
to 'difmap' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Analytical'
changed to 'analytical' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from
2010-06-29.

'_refine_ls_matrix_type' value 'Full' changed to 'full'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_refine_ls_weighting_scheme' value 'Calc' changed to
'calc' 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 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               2219140
_cod_database_fobs_code          2219140