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_4501074
_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 H8 N O2'
_chemical_formula_sum            'C13 H10 N4 O9'
_chemical_formula_weight         366.25
_chemical_name_systematic
;
3-(methylcarboxyl)pyridinium picrate
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2010-10-15T09:38:09-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                94.175(3)
_cell_angle_beta                 104.293(4)
_cell_angle_gamma                101.185(4)
_cell_formula_units_Z            2
_cell_length_a                   7.8229(4)
_cell_length_b                   8.2179(3)
_cell_length_c                   12.3931(5)
_cell_measurement_reflns_used    2169
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      32.0
_cell_measurement_theta_min      4.6
_cell_volume                     751.27(6)
_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 0.977
_diffrn_measured_fraction_theta_max 0.977
_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  0.0089
_diffrn_reflns_av_unetI/netI     0.0128
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            5182
_diffrn_reflns_theta_full        25
_diffrn_reflns_theta_max         25
_diffrn_reflns_theta_min         3.92
_exptl_absorpt_coefficient_mu    0.14
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.619
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             376
_exptl_crystal_size_max          0.547
_exptl_crystal_size_mid          0.466
_exptl_crystal_size_min          0.421
_refine_diff_density_max         0.288
_refine_diff_density_min         -0.184
_refine_diff_density_rms         0.035
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     240
_refine_ls_number_reflns         2594
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.067
_refine_ls_R_factor_all          0.0407
_refine_ls_R_factor_gt           0.0349
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0437P)^2^+0.2461P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0902
_refine_ls_wR_factor_ref         0.0926
_reflns_number_gt                2212
_reflns_number_total             2594
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cg200684x_si_002.cif
_cod_data_source_block           3-mecarbpy
_cod_original_sg_symbol_H-M      'P -1 '
_cod_database_code               4501074