4,4'-Bipyridine–2,4-dihydroxybenzoic acid (1/1)
Wang, Zi-Liang; Wei, Lin-Heng; Li, Ming-Xue; Acta Crystallographica Section E 62 (2006) o3031–o3032; doi:10.1107/S160053680602201X

data_2209619
_publ_section_title
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 4,4'-Bipyridine--2,4-dihydroxybenzoic acid (1/1)
;
_journal_coeditor_code           OB2028
_journal_issue                   7
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o3031
_journal_page_last               o3032
_journal_paper_doi               10.1107/S160053680602201X
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'C10 H8 N2, C7 H6 O4'
_chemical_formula_moiety         'C10 H8 N2, C7 H6 O4'
_chemical_formula_sum            'C17 H14 N2 O4'
_chemical_formula_weight         310.30
_chemical_name_systematic
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4,4'-Bipyridine--2,4-dihydroxybenzoic acid (1/1)
;
_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                 95.942(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.6085(8)
_cell_length_b                   10.7724(12)
_cell_length_c                   20.809(2)
_cell_measurement_reflns_used    3592
_cell_measurement_temperature    292(2)
_cell_measurement_theta_max      27.73
_cell_measurement_theta_min      2.73
_cell_volume                     1473.4(3)
_computing_cell_refinement       'SAINT-Plus (Bruker, 2001)'
_computing_data_collection       'SMART (Bruker, 2001)'
_computing_data_reduction        SAINT-Plus
_computing_molecular_graphics    'PLATON (Spek, 2003)'
_computing_publication_material  PLATON
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      292(2)
_diffrn_measured_fraction_theta_full 0.965
_diffrn_measured_fraction_theta_max 0.965
_diffrn_measurement_device_type  'Bruker SMART APEX CCD area-detector'
_diffrn_measurement_method       '0.3\% \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  0.1093
_diffrn_reflns_av_sigmaI/netI    0.0671
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            12686
_diffrn_reflns_theta_full        28.28
_diffrn_reflns_theta_max         28.28
_diffrn_reflns_theta_min         1.97
_exptl_absorpt_coefficient_mu    0.101
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.399
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             648
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.405
_refine_diff_density_min         -0.205
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.003
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     211
_refine_ls_number_reflns         3528
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.003
_refine_ls_R_factor_all          0.0765
_refine_ls_R_factor_gt           0.0555
_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^)+(0.0824P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1420
_refine_ls_wR_factor_ref         0.1554
_reflns_number_gt                2537
_reflns_number_total             3528
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ob2028.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_sg_symbol_H-M      'P 21/c'
_cod_database_code               2209619
_cod_database_fobs_code          2209619