Bis(2,6-dicarboxypyridinium) dichloride acetone monosolvate
Ton, Cuong Quoc; Bolte, Michael; Acta Crystallographica Section E 65 (2009) o2848–; doi:10.1107/S1600536809043220

data_2223944
_publ_section_title
;
 Bis(2,6-dicarboxypyridinium) dichloride acetone monosolvate
;
_journal_coeditor_code           NG2671
_journal_issue                   11
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2848
_journal_paper_doi               10.1107/S1600536809043220
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          '2C7 H6 N O4 +, 2Cl -, C3 H6 O'
_chemical_formula_moiety         '2(C7 H6 N O4 +), 2(Cl -), C3 H6 O'
_chemical_formula_sum            'C17 H18 Cl2 N2 O9'
_chemical_formula_weight         465.23
_chemical_name_systematic
;
Bis(2,6-dicarboxypyridinium) dichloride acetone monosolvate
;
_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_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 110.28(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   21.108(4)
_cell_length_b                   6.7877(14)
_cell_length_c                   15.224(3)
_cell_measurement_reflns_used    4736
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      23.9
_cell_measurement_theta_min      3.6
_cell_volume                     2046.0(8)
_computing_cell_refinement       'X-AREA (Stoe & Cie, 2001)'
_computing_data_collection       'X-AREA (Stoe & Cie, 2001)'
_computing_data_reduction        'X-AREA (Stoe & Cie, 2001)'
_computing_molecular_graphics    'XP (Sheldrick, 2008)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Stoe IPDSII two-circle'
_diffrn_measurement_method       \w
_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  0.0408
_diffrn_reflns_av_sigmaI/netI    0.0190
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -25
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            27731
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.67
_diffrn_reflns_theta_min         2.68
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.370
_exptl_absorpt_correction_T_max  0.9296
_exptl_absorpt_correction_T_min  0.8970
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(MULABS; Spek, 2003; Blessing, 1995)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.510
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             960
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.167
_refine_diff_density_min         -0.334
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.065
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     277
_refine_ls_number_reflns         3867
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.065
_refine_ls_R_factor_all          0.0340
_refine_ls_R_factor_gt           0.0282
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0611P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0798
_refine_ls_wR_factor_ref         0.0824
_reflns_number_gt                3412
_reflns_number_total             3867
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ng2671.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        2046.0(7)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               2223944
_cod_database_fobs_code          2223944