3-Chloro-6-(1<i>H</i>-pyrazol-1-yl)pyridazine
Ather, Abdul Qayyum; Tahir, M. Nawaz; Khan, Misbahul Ain; Athar, Muhammad Makshoof; Bueno, Eliana AparecidaSilicz; Acta Crystallographica Section E 66 (2010) o2016–; doi:10.1107/S1600536810027121

data_2227104
_publ_section_title
;
 3-Chloro-6-(1<i>H</i>-pyrazol-1-yl)pyridazine
;
_journal_coeditor_code           VM2034
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2016
_journal_paper_doi               10.1107/S1600536810027121
_journal_volume                  66
_journal_year                    2010
_chemical_formula_iupac          'C7 H5 Cl N4'
_chemical_formula_moiety         'C7 H5 Cl N4'
_chemical_formula_sum            'C7 H5 Cl N4'
_chemical_formula_weight         180.60
_chemical_name_systematic
;
3-Chloro-6-(1<i>H</i>-pyrazol-1-yl)pyridazine
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                83.00(3)
_cell_angle_beta                 77.64(2)
_cell_angle_gamma                88.04(3)
_cell_formula_units_Z            2
_cell_length_a                   5.684(3)
_cell_length_b                   6.526(3)
_cell_length_c                   11.130(6)
_cell_measurement_reflns_used    774
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      25.05
_cell_measurement_theta_min      3.15
_cell_volume                     400.3(4)
_computing_cell_refinement       'SAINT (Bruker, 2007)'
_computing_data_collection       'APEX2 (Bruker, 2007)'
_computing_data_reduction        'SAINT (Bruker, 2007)'
_computing_molecular_graphics
'ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009)'
_computing_publication_material
;
WinGX (Farrugia, 1999) and PLATON (Spek, 2009)
;
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_detector_area_resol_mean 8.20
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker Kappa APEXII 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  0.0705
_diffrn_reflns_av_sigmaI/netI    0.0855
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            5550
_diffrn_reflns_theta_full        25.05
_diffrn_reflns_theta_max         25.05
_diffrn_reflns_theta_min         3.15
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.420
_exptl_absorpt_correction_T_max  0.988
_exptl_absorpt_correction_T_min  0.982
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Bruker, 2005)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.499
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             184
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.219
_refine_diff_density_min         -0.218
_refine_ls_goodness_of_fit_ref   1.083
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     109
_refine_ls_number_reflns         1422
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.083
_refine_ls_R_factor_all          0.1286
_refine_ls_R_factor_gt           0.0623
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0381P)^2^+0.2760P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1294
_refine_ls_wR_factor_ref         0.1542
_reflns_number_gt                774
_reflns_number_total             1422
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            vm2034.cif
_cod_data_source_block           I
_cod_original_cell_volume        400.2(4)
_cod_database_code               2227104
_cod_database_fobs_code          2227104