4-Cyano-1-methylpyridinium perchlorate
Nguyen, Vu D.; McCormick, Cameron A.; Koplitz, Lynn V.; Mague, Joel T.; Acta Crystallographica Section E 70 (2014) o756–o757; doi:10.1107/S1600536814012860

data_2239642
_publ_section_title
;
 4-Cyano-1-methylpyridinium perchlorate
;
_journal_coeditor_code           SU2740
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o756
_journal_page_last               o757
_journal_paper_doi               10.1107/S1600536814012860
_journal_volume                  70
_journal_year                    2014
_chemical_formula_iupac          'C7 H7 N2 +, Cl O4 -'
_chemical_formula_moiety         'C7 H7 N2 +, Cl O4 -'
_chemical_formula_sum            'C7 H7 Cl N2 O4'
_chemical_formula_weight         218.60
_chemical_name_systematic
;
4-Cyano-1-methylpyridinium perchlorate
;
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   10.232(2)
_cell_length_b                   10.872(3)
_cell_length_c                   16.769(4)
_cell_measurement_reflns_used    9543
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      29.12
_cell_measurement_theta_min      2.99
_cell_volume                     1865.4(8)
_computing_cell_refinement       '<i>SAINT</i> (Bruker, 2010)'
_computing_data_collection       '<i>APEX2</i> (Bruker, 2010)'
_computing_data_reduction        '<i>SAINT</i> (Bruker, 2010)'
_computing_molecular_graphics    '<i>DIAMOND</i> (Brandenburg & Putz, 2012)'
_computing_publication_material  '<i>SHELXTL</i> (Sheldrick, 2008)')'
_computing_structure_refinement  '<i>SHELXL97</i> (Sheldrick, 2008)'
_computing_structure_solution    '<i>SHELXS97</i> (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Bruker SMART APEX CCD'
_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  0.0536
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            30647
_diffrn_reflns_theta_full        28.500
_diffrn_reflns_theta_max         29.14
_diffrn_reflns_theta_min         2.43
_exptl_absorpt_coefficient_mu    0.400
_exptl_absorpt_correction_T_max  0.95
_exptl_absorpt_correction_T_min  0.86
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(<i>SADABS</i>; Bruker, 2010)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.557
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             896
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.383
_refine_diff_density_min         -0.389
_refine_ls_extinction_coef       0.0061(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     '<i>SHELXL97</i> (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.065
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     129
_refine_ls_number_reflns         2475
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.065
_refine_ls_R_factor_all          0.0382
_refine_ls_R_factor_gt           0.0344
_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^)+(0.0474P)^2^+1.2040P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0923
_refine_ls_wR_factor_ref         0.0968
_reflns_number_gt                2235
_reflns_number_total             2475
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            su2740sup1.cif
_cod_data_source_block           I
_cod_original_cell_volume        1865.3(7)
_cod_database_code               2239642
_cod_database_fobs_code          2239642
_shelx_estimated_absorpt_t_min   0.914
_shelx_estimated_absorpt_t_max   0.954
_shelx_hkl_checksum              80387
_shelx_res_checksum              95615
_shelxl_version_number           2.014