Crystal structures of the hexafluoridophosphate salts of the isomeric 2-, 3- and 4-cyano-1-methylpyridinium cations and determination of solid-state interaction energies
Mague, Joel T.; Larrabee, Erin; Olivier, David; Vaccaro, Francesca; Riley, Kevin E.; Koplitz, Lynn V.; Acta Crystallographica Section E 74 (2018) 1322–1329; doi:10.1107/S2056989018011003

data_2242609
_publ_section_title
;
 Crystal structures of the hexafluoridophosphate salts of the isomeric 2-,
 3- and 4-cyano-1-methylpyridinium cations and determination of
 solid-state interaction energies
;
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              1322
_journal_page_last               1329
_journal_paper_doi               10.1107/S2056989018011003
_journal_volume                  74
_journal_year                    2018
_chemical_formula_iupac          'C7 H7 N2 +, P F6 -'
_chemical_formula_moiety         'C7 H7 N2 +, F6 P -'
_chemical_formula_sum            'C7 H7 F6 N2 P'
_chemical_formula_weight         264.12
_chemical_name_systematic
;
3-Cyano-1-methylpyridinium hexafluoridophosphate
;
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.8484(2)
_cell_length_b                   10.8964(2)
_cell_length_c                   11.8669(3)
_cell_measurement_reflns_used    9953
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      72.4017
_cell_measurement_theta_min      3.7248
_cell_volume                     1014.85(4)
_computing_cell_refinement
;
<i>SAINT</i> (Bruker, 2015)
;
_computing_data_collection
;
<i>APEX2</i> (Bruker, 2015)
;
_computing_data_reduction
;
<i>SAINT</i> (Bruker, 2015)
;
_computing_molecular_graphics
;
<i>DIAMOND</i> (Brandenburg & Putz, 2012)
;
_computing_publication_material
;
<i>SHELXTL</i> (Sheldrick, 2008a)
;
_computing_structure_refinement
;
<i>SHELXL</i> (Sheldrick, 2015b)
;
_computing_structure_solution
;
<i>SHELXT</i> (Sheldrick, 2015a)
;
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 10.4167
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker D8 VENTURE PHOTON 100 CMOS'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0339
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            15204
_diffrn_reflns_theta_full        72.000
_diffrn_reflns_theta_max         72.299
_diffrn_reflns_theta_min         5.512
_exptl_absorpt_coefficient_mu    3.093
_exptl_absorpt_correction_T_max  0.65
_exptl_absorpt_correction_T_min  0.59
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
(<i>SADABS</i>; Bruker, 2015)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.729
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             528
_exptl_crystal_size_max          0.260
_exptl_crystal_size_mid          0.191
_exptl_crystal_size_min          0.152
_refine_diff_density_max         0.347
_refine_diff_density_min         -0.357
_refine_ls_abs_structure_details
;
Flack <i>x</i> determined using 800 quotients
[(<i>I</i>^+^)-(<i>I</i>^-^)]/[(<i>I</i>^+^)+(<i>I</i>^-^)]
(Parsons <i>et al.</i>, 2013)
;
_refine_ls_abs_structure_Flack   0.040(6)
_refine_ls_extinction_coef       0.0095(11)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method
;
<i>SHELXL</i> (Sheldrick, 2015b)
;
_refine_ls_goodness_of_fit_ref   1.079
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     160
_refine_ls_number_reflns         2009
_refine_ls_number_restraints     8
_refine_ls_restrained_S_all      1.089
_refine_ls_R_factor_all          0.0364
_refine_ls_R_factor_gt           0.0357
_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^)+(0.0513P)^2^+0.5414P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0939
_refine_ls_wR_factor_ref         0.0948
_reflns_number_gt                1970
_reflns_number_total             2009
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            hb7755sup1.cif
_cod_data_source_block           2
_cod_database_code               2242609
_cod_database_fobs_code          2242609
_shelx_estimated_absorpt_t_min   0.500
_shelx_estimated_absorpt_t_max   0.651
_shelx_hkl_checksum              58843
_shelx_res_checksum              66751