Solid-State Supramolecular Chemistry of a Benzylpyridine-Functionalized Zwitterion: Polymorphism, Interconversion, and Porosity
Loots, Leigh; O’Connor, James P.; le Roex, Tanya; Haynes, Delia A.; Crystal Growth & Design 15 (2015) 5849–; doi:10.1021/acs.cgd.5b01238

data_4516508
_publ_section_title
;
 Solid-State Supramolecular Chemistry of a Benzylpyridine-Functionalized
 Zwitterion: Polymorphism, Interconversion, and Porosity
;
_journal_issue                   12
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              5849
_journal_paper_doi               10.1021/acs.cgd.5b01238
_journal_volume                  15
_journal_year                    2015
_chemical_formula_moiety         'C12 H12 N, 0.5(C4 O4)'
_chemical_formula_sum            'C14 H12 N O2'
_chemical_formula_weight         226.25
_chemical_name_systematic
;
bis(4-benzylpyridinium) carboxy-propynoate
;
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2012
_cell_angle_alpha                90
_cell_angle_beta                 95.143(7)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.390(3)
_cell_length_b                   8.680(4)
_cell_length_c                   25.258(12)
_cell_measurement_reflns_used    1590
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      22.075
_cell_measurement_theta_min      2.482
_cell_volume                     1176.9(10)
_computing_cell_refinement       'SAINT (Bruker, 2012)'
_computing_data_collection       'APEX2 (Bruker, 2012)'
_computing_data_reduction        'SAINT (Bruker, 2012)'
_computing_molecular_graphics
'X-Seed (Barbour, 2001; Atwood & Barbour, 2003)'
_computing_structure_refinement  'SHELXL-2012 (Sheldrick, 2012)'
_computing_structure_solution    'SHELXL-2012 (Sheldrick, 2012)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.960
_diffrn_measurement_device_type  'Bruker APEX CCD area -detector'
_diffrn_measurement_method       \w
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0233
_diffrn_reflns_av_unetI/netI     0.0267
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.960
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            7165
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.960
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.728
_diffrn_reflns_theta_min         2.482
_diffrn_source                   'fine-focus sealed tube'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.086
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.9402
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'SADABS, 2012'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.277
_exptl_crystal_description       block
_exptl_crystal_F_000             476
_exptl_crystal_size_max          0.790
_exptl_crystal_size_mid          0.478
_exptl_crystal_size_min          0.312
_refine_diff_density_max         0.110
_refine_diff_density_min         -0.163
_refine_diff_density_rms         0.034
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     176
_refine_ls_number_reflns         2648
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.0671
_refine_ls_R_factor_gt           0.0444
_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^)+(0.0595P)^2^+0.0111P]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1082
_refine_ls_wR_factor_ref         0.1199
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1776
_reflns_number_total             2648
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            cg5b01238_si_002.cif
_cod_data_source_block           2
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               4516508
_shelx_estimated_absorpt_t_min   0.935
_shelx_estimated_absorpt_t_max   0.974
_shelxl_version_number           2012-9
_shelx_res_checksum              54530
_shelx_hkl_checksum              66687