The 1:1 complex of 4-chloro-3-nitrobenzoic acid and pyridazine
Hiroyuki Ishida; Takeo Fukunaga; Setsuo Kashino; Acta Crystallographica Section E 58 (2002) o1081–o1082; doi:10.1107/S1600536802015933

data_2201576
_publ_section_title
;
 The 1:1 complex of 4-chloro-3-nitrobenzoic acid and pyridazine
;
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1081
_journal_page_last               o1082
_journal_paper_doi               10.1107/S1600536802015933
_journal_volume                  58
_journal_year                    2002
_chemical_formula_moiety         'C7 H4 Cl N O4 , C4 H4 N2'
_chemical_formula_sum            'C11 H8 Cl N3 O4'
_chemical_formula_weight         281.65
_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'
_cell_angle_alpha                90
_cell_angle_beta                 96.677(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   3.7659(4)
_cell_length_b                   27.486(6)
_cell_length_c                   11.7723(15)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    298
_cell_measurement_theta_max      12.4
_cell_measurement_theta_min      11.4
_cell_volume                     1210.3(3)
_computing_cell_refinement       'MSC/AFC Diffractometer Control Software'
_computing_data_collection
;MSC/AFC Diffractometer Control Software
(Molecular Structure Corporation, 1990)
;
_computing_data_reduction
'teXsan for Windows (Molecular Structure Corporation, 1997-1999)'
_computing_publication_material  'teXsan for Windows'
_computing_structure_refinement  'teXsan for Windows'
_computing_structure_solution    'SIR92 (Altomare, et. al. 1993)'
_diffrn_ambient_temperature      298
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device       'Rigaku AFC-5R'
_diffrn_measurement_method       \w-2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Rigaku rotating anode'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.022
_diffrn_reflns_av_sigmaI/netI    0.071
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -1
_diffrn_reflns_limit_k_max       35
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            4090
_diffrn_reflns_reduction_process 'Lp corrections applied'
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.74
_diffrn_standards_decay_%        1.14
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.329
_exptl_absorpt_correction_T_max  0.921
_exptl_absorpt_correction_T_min  0.873
_exptl_absorpt_correction_type   '\y scan'
_exptl_absorpt_process_details   '(North et al., 1968)'
_exptl_crystal_colour            'pale brown'
_exptl_crystal_density_diffrn    1.546
_exptl_crystal_density_meas      ?
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             576.0
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.41
_refine_diff_density_min         -0.42
_refine_ls_extinction_coef       9.3(16)\\times10^-7^
_refine_ls_extinction_expression 'equ(3) Acta Cryst.(1968) A24, p213.'
_refine_ls_extinction_method     'Zachariasen (1967)'
_refine_ls_goodness_of_fit_all   1.19
_refine_ls_goodness_of_fit_ref   1.19
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     205
_refine_ls_number_reflns         2767
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.063
_refine_ls_R_factor_gt           0.046
_refine_ls_shift/su_max          0.01
_refine_ls_shift/su_mean         0.0003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details     'w = 1/[\s^2^(F~o~) + 0.00013|F~o~|^2^]'
_refine_ls_weighting_scheme      sigma
_refine_ls_wR_factor_gt          0.073
_refine_ls_wR_factor_ref         0.087
_reflns_number_gt                1582
_reflns_number_total             2767
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ob6171.cif
_cod_data_source_block           I
_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_original_formula_sum        'C11 H8 Cl N3 O4 '
_cod_database_code               2201576
_cod_database_fobs_code          2201576