2-Cyano-1-methylpyridinium iodide
Kammer, Michael N.; Koplitz, Lynn V.; Mague, Joel T.; Acta Crystallographica Section E 69 (2013) o1281–; doi:10.1107/S1600536813019302

data_2238439
_publ_section_title
;
 2-Cyano-1-methylpyridinium iodide
;
_journal_coeditor_code           TK5240
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1281
_journal_paper_doi               10.1107/S1600536813019302
_journal_volume                  69
_journal_year                    2013
_chemical_formula_iupac          'C7 H7 N2 +, I -'
_chemical_formula_moiety         'C7 H7 N2 +, I -'
_chemical_formula_sum            'C7 H7 I N2'
_chemical_formula_weight         246.05
_chemical_melting_point          146
_chemical_name_systematic
;
2-Cyano-1-methylpyridinium iodide
;
_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-2013
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   9.5785(6)
_cell_length_b                   8.5687(5)
_cell_length_c                   20.2229(13)
_cell_measurement_reflns_used    4287
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.6475
_cell_measurement_theta_min      2.9293
_cell_volume                     1659.80(18)
_computing_cell_refinement       '<i>SAINT</i> (Bruker, 2013)'
_computing_data_collection       '<i>APEX2</i> (Bruker, 2013)'
_computing_data_reduction        '<i>SAINT</i> (Bruker, 2013)'
_computing_molecular_graphics    '<i>DIAMOND</i> (Brandenburg & Putz, 2012)'
_computing_publication_material  '<i>SHELXTL</i> (Sheldrick, 2008<i>b</i>)'
_computing_structure_refinement  'SHELXL2013 (Sheldrick, 2013)'
_computing_structure_solution    '<i>SHELXT</i> (Sheldrick, 2008<i>b</i>)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.3660
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker SMART APEX CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0467
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            58292
_diffrn_reflns_theta_full        28.670
_diffrn_reflns_theta_max         28.671
_diffrn_reflns_theta_min         2.014
_exptl_absorpt_coefficient_mu    3.786
_exptl_absorpt_correction_T_max  0.77
_exptl_absorpt_correction_T_min  0.58
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(<i>TWINABS</i>; Sheldrick, 2009)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.969
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       slab
_exptl_crystal_F_000             928
_exptl_crystal_size_max          0.159
_exptl_crystal_size_mid          0.143
_exptl_crystal_size_min          0.072
_refine_diff_density_max         1.144
_refine_diff_density_min         -0.426
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     93
_refine_ls_number_reflns         53390
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0504
_refine_ls_R_factor_gt           0.0356
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0143P)^2^+0.7747P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0803
_refine_ls_wR_factor_ref         0.0908
_reflns_number_gt                40858
_reflns_number_total             53390
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            tk5240.cif
_cod_data_source_block           I
_cod_database_code               2238439
_cod_database_fobs_code          2238439
_shelx_estimated_absorpt_t_min   0.584
_shelx_estimated_absorpt_t_max   0.772
_shelx_hkl_checksum              4774
_shelx_res_checksum              75188
_shelxl_version_number           2.013