Hydrogen Bonding in Pyridinium Picrates: From Discrete Ion Pairs to 3D Networks
Stilinović, Vladimir; Kaitner, Branko; Crystal Growth & Design 11 (2011) 4110–; doi:10.1021/cg200684x

data_4501059
_publ_section_title
;
 Hydrogen Bonding in Pyridinium Picrates: From Discrete Ion Pairs to 3D
 Networks
;
_journal_issue                   9
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              4110
_journal_paper_doi               10.1021/cg200684x
_journal_volume                  11
_journal_year                    2011
_chemical_formula_moiety         'C6 H2 N3 O7, C7 H10 N'
_chemical_formula_sum            'C13 H12 N4 O7'
_chemical_formula_weight         336.27
_chemical_name_systematic
;
2,6-dimethylpyridinium picrate
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2010-09-20T11:09:08-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 119.16(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.2573(14)
_cell_length_b                   24.472(3)
_cell_length_c                   8.1377(13)
_cell_measurement_reflns_used    972
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      32.0
_cell_measurement_theta_min      4.6
_cell_volume                     1436.0(5)
_computing_cell_refinement
;
CrysAlis RED 170 (Oxford Diffraction Poland Sp., 2003)
;
_computing_data_collection
;
CrysAlis CCD 170 (Oxford Diffraction Poland Sp., 2003)
;
_computing_data_reduction
;
CrysAlis RED 170 (Oxford Diffraction Poland Sp., 2003)
;
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material
;
WinGX (Farrugia, 1999) 
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type
;
Oxford Diffraction Xcalibur CCD
diffractometer
;
_diffrn_measurement_method       'omega scan'
_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_av_unetI/netI     0.0448
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       6
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            7247
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         3.77
_exptl_absorpt_coefficient_mu    0.129
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.555
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             696
_exptl_crystal_size_max          0.467
_exptl_crystal_size_mid          0.092
_exptl_crystal_size_min          0.064
_refine_diff_density_max         0.305
_refine_diff_density_min         -0.275
_refine_diff_density_rms         0.066
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.172
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     223
_refine_ls_number_reflns         2504
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.172
_refine_ls_R_factor_all          0.1184
_refine_ls_R_factor_gt           0.0966
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0647P)^2^+3.4737P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2175
_refine_ls_wR_factor_ref         0.2263
_reflns_number_gt                1907
_reflns_number_total             2504
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg200684x_si_002.cif
_cod_data_source_block           2,6-mepy
_cod_original_cell_volume        1436.0(4)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4501059