2,2'-Bipyridine-5,5'-dicarboxylic acid
Wang, Chongchen; Acta Crystallographica Section E 65 (2009) o2081–; doi:10.1107/S1600536809030207

data_2223148
_publ_section_title
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 2,2'-Bipyridine-5,5'-dicarboxylic acid
;
_journal_coeditor_code           LH2868
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2081
_journal_paper_doi               10.1107/S1600536809030207
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          'C12 H8 N2 O4'
_chemical_formula_moiety         'C12 H8 N2 O4'
_chemical_formula_sum            'C12 H8 N2 O4'
_chemical_formula_weight         244.20
_chemical_name_systematic
;
2,2'-Bipyridine-5,5'-dicarboxylic acid
;
_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_method           SHELXL-97
_cell_angle_alpha                98.774(2)
_cell_angle_beta                 92.5670(10)
_cell_angle_gamma                90.0000(10)
_cell_formula_units_Z            1
_cell_length_a                   3.7384(5)
_cell_length_b                   6.3934(8)
_cell_length_c                   10.7786(13)
_cell_measurement_reflns_used    528
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      27.615
_cell_measurement_theta_min      3.224
_cell_volume                     254.34(6)
_computing_cell_refinement       'SAINT (Bruker, 2007)'
_computing_data_collection       'SMART (Bruker, 2007)'
_computing_data_reduction        'SAINT (Bruker, 2007)'
_computing_molecular_graphics
'SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009)'
_computing_publication_material  'SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'Bruker SMART CCD'
_diffrn_measurement_method       '\f and \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  0.0230
_diffrn_reflns_av_sigmaI/netI    0.0354
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            1343
_diffrn_reflns_theta_full        25.04
_diffrn_reflns_theta_max         25.04
_diffrn_reflns_theta_min         1.91
_exptl_absorpt_coefficient_mu    0.123
_exptl_absorpt_correction_T_max  0.9902
_exptl_absorpt_correction_T_min  0.9818
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 1996)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.594
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             126
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.332
_refine_diff_density_min         -0.356
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.144
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     82
_refine_ls_number_reflns         893
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.144
_refine_ls_R_factor_all          0.0900
_refine_ls_R_factor_gt           0.0713
_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^)+(0.1116P)^2^+0.1159P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2019
_refine_ls_wR_factor_ref         0.2143
_reflns_number_gt                657
_reflns_number_total             893
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            lh2868.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 'Triclinic' changed to 'triclinic'
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 
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_cod_database_code               2223148
_cod_database_fobs_code          2223148