Hirshfeld surface analysis of crystal packing in aza-aromatic picrate salts
Chan, Eric J.; Grabowsky, Simon; Harrowfield, Jack M.; Shi, Ming W.; Skelton, Brian W.; Sobolev, Alexandre N.; White, Allan H.; CrystEngComm 16 (2014) 4508–; doi:10.1039/c4ce00095a

data_7214449
_publ_section_title
;
 Hirshfeld surface analysis of crystal packing in aza-aromatic picrate
 salts
;
_journal_issue                   21
_journal_name_full               CrystEngComm
_journal_page_first              4508
_journal_paper_doi               10.1039/c4ce00095a
_journal_volume                  16
_journal_year                    2014
_chemical_formula_moiety         'C6 H2 N3 O7, C10 H10 N3'
_chemical_formula_sum            'C16 H12 N6 O7'
_chemical_formula_weight         400.32
_chemical_name_systematic
;
Bis(2-pyridyl)ammonium picrate
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_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_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 108.918(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.1996(11)
_cell_length_b                   14.6492(18)
_cell_length_c                   13.1834(16)
_cell_measurement_reflns_used    6733
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      33.0235
_cell_measurement_theta_min      2.3405
_cell_volume                     1680.7(4)
_computing_cell_refinement       'Siemens SAINT (Siemens, 1995)'
_computing_data_collection       'Siemens SMART (Siemens, 1995)'
_computing_data_reduction        'XPREP, Bruker Version 5.1/NT, 1997'
_computing_molecular_graphics
'XP Interactive Molecular Graphics, Bruker AXS V5.1, 1998)'
_computing_publication_material  'XCIF Tables Production, Bruker Ver. 2008/2'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.954
_diffrn_measurement_device_type
;
Bruker SMART CCD diffractometer
;
_diffrn_measurement_method       '\w scans'
_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  0.0277
_diffrn_reflns_av_sigmaI/netI    0.0274
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            22442
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         33.16
_diffrn_reflns_theta_min         2.14
_exptl_absorpt_coefficient_mu    0.128
_exptl_absorpt_correction_T_max  0.961
_exptl_absorpt_correction_T_min  0.900
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS (Sheldrick, 1996)
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.582
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       fragment
_exptl_crystal_F_000             824
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.36
_exptl_crystal_size_min          0.31
_refine_diff_density_max         0.996
_refine_diff_density_min         -0.793
_refine_diff_density_rms         0.077
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.917
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     310
_refine_ls_number_reflns         6132
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.917
_refine_ls_R_factor_all          0.0803
_refine_ls_R_factor_gt           0.0594
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+1.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1502
_refine_ls_wR_factor_ref         0.1684
_reflns_number_gt                4482
_reflns_number_total             6132
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ce00095a2.cif
_cod_data_source_block           CCDC606105
_cod_depositor_comments
'Adding full bibliography for 7214441--7214449.cif.'
_cod_original_sg_symbol_Hall     -P_2ybc
_cod_original_sg_symbol_H-M      P_21/c
_cod_database_code               7214449