4,4'-Bipyridine–pyroglutamic acid (1/2)
Arman, Hadi D.; Kaulgud, Trupta; Tiekink, Edward R. T.; Acta Crystallographica Section E 65 (2009) o2950–; doi:10.1107/S1600536809045000

data_2223821
_publ_section_title
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 4,4'-Bipyridine--pyroglutamic acid (1/2)
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_journal_coeditor_code           HB5194
_journal_issue                   11
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o2950
_journal_paper_doi               10.1107/S1600536809045000
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          'C10 H8 N2, 2C5 H7 N O3'
_chemical_formula_moiety         'C10 H8 N2, 2(C5 H7 N O3)'
_chemical_formula_sum            'C20 H22 N4 O6'
_chemical_formula_weight         414.42
_chemical_name_systematic
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4,4'-Bipyridine--pyroglutamic acid (1/2)
;
_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                66.274(17)
_cell_angle_beta                 74.203(17)
_cell_angle_gamma                86.91(2)
_cell_formula_units_Z            2
_cell_length_a                   7.444(3)
_cell_length_b                   11.511(4)
_cell_length_c                   12.845(4)
_cell_measurement_reflns_used    3819
_cell_measurement_temperature    98(2)
_cell_measurement_theta_max      40.3
_cell_measurement_theta_min      1.8
_cell_volume                     967.6(6)
_computing_cell_refinement       'CrystalClear (Rigaku/MSC, 2005)'
_computing_data_collection       'CrystalClear (Rigaku/MSC, 2005)'
_computing_data_reduction        'CrystalClear (Rigaku/MSC, 2005)'
_computing_molecular_graphics    'DIAMOND (Brandenburg, 2006)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      98(2)
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type
;
Rigaku Saturn724
;
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.041
_diffrn_reflns_av_sigmaI/netI    0.060
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            5618
_diffrn_reflns_theta_full        25.0
_diffrn_reflns_theta_max         25.0
_diffrn_reflns_theta_min         1.8
_diffrn_standards_decay_%        <1
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.107
_exptl_absorpt_correction_T_max  1.000
_exptl_absorpt_correction_T_min  0.706
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(ABSCOR; Higashi, 1995)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.422
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             436
_exptl_crystal_size_max          0.22
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.29
_refine_diff_density_min         -0.26
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.16
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     281
_refine_ls_number_reflns         3375
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.16
_refine_ls_R_factor_all          0.068
_refine_ls_R_factor_gt           0.056
_refine_ls_shift/su_max_lt       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^)+(0.0416P)^2^+0.3826P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.121
_refine_ls_wR_factor_ref         0.128
_reflns_number_gt                2851
_reflns_number_total             3375
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            hb5194.cif
_cod_data_source_block           I
_cod_depositor_comments
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The following automatic conversions were performed:
'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' 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:

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' 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_database_code               2223821
_cod_database_fobs_code          2223821