4,4'-(Azinodimethylene)dipyridinium bis(tetrafluoroborate) and 4-[(4-pyridylmethylene)hydrazonomethyl]pyridinium perchlorate: two different hydrogen-bonding motifs
Ghazzali, Mohamed; Langer, Vratislav; Öhrström, Lars; Abu-Youssef, Morsy; Acta Crystallographica Section C 63 (2007) o312–o314; doi:10.1107/S0108270107015764

data_2015966
_publ_section_title
;
 4,4'-(Azinodimethylene)dipyridinium bis(tetrafluoroborate) and
 4-[(4-pyridylmethylene)hydrazonomethyl]pyridinium perchlorate: two
 different hydrogen-bonding motifs
;
_journal_coeditor_code           SK3115
_journal_issue                   5
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              o312
_journal_page_last               o314
_journal_paper_doi               10.1107/S0108270107015764
_journal_volume                  63
_journal_year                    2007
_chemical_formula_iupac          'C12 H11 N4 + , Cl O4 -'
_chemical_formula_moiety         'C12 H11 N4 + , Cl O4 -'
_chemical_formula_sum            'C12 H11 Cl N4 O4'
_chemical_formula_weight         310.70
_chemical_name_systematic
;
4-[4-pyridylmethylene)hydrazonomethyl]pyridinium perchlorate
;
_space_group_IT_number           29
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2ac'
_symmetry_space_group_name_H-M   'P c a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.0896(6)
_cell_length_b                   11.5525(5)
_cell_length_c                   7.8694(3)
_cell_measurement_reflns_used    5650
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      28.24
_cell_measurement_theta_min      3.22
_cell_volume                     1371.81(10)
_computing_cell_refinement       'SAINT (Bruker, 2003)'
_computing_data_collection       'SMART (Bruker, 2003)'
_computing_data_reduction        'SAINT and SADABS (Sheldrick, 2003)'
_computing_molecular_graphics    'DIAMOND (Brandenburg, 2006)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  SHELXTL
_computing_structure_solution    'SHELXTL (Bruker, 2003)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Siemens SMART CCD area-detector'
_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  0.0404
_diffrn_reflns_av_sigmaI/netI    0.0292
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            18851
_diffrn_reflns_theta_full        28.36
_diffrn_reflns_theta_max         28.36
_diffrn_reflns_theta_min         2.22
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.301
_exptl_absorpt_correction_T_max  0.9763
_exptl_absorpt_correction_T_min  0.795
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 2003)'
_exptl_crystal_colour            'dark red'
_exptl_crystal_density_diffrn    1.504
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             640
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.242
_refine_diff_density_min         -0.210
_refine_ls_abs_structure_details 'Flack (1983), with 1594 Friedel pairs'
_refine_ls_abs_structure_Flack   -0.02(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.003
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     190
_refine_ls_number_reflns         3440
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.003
_refine_ls_R_factor_all          0.0415
_refine_ls_R_factor_gt           0.0322
_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^)+(0.0484P)^2^+0.1706P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0779
_refine_ls_wR_factor_ref         0.0822
_reflns_number_gt                2994
_reflns_number_total             3440
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            sk3115.cif
_cod_data_source_block           II
_cod_database_code               2015966
_cod_database_fobs_code          2015966